Power amplifier 65W with HEXFET

A medium power amplifier that is characterized by a lot of good sound quality, but simultaneously is very simple in the construction. Him uses, enough time in my active loudspeakers. In his output stage exist the very good FET transistors, technology HEXFET, transistor which are controlled by voltage and no by current as the classically bipolar transistors. The circuit has symmetrical designing, resolving thus the harmonic distortion problem. All the transistors that are used in the circuit are simple and they exist in big clearings in the market. The pairs of differential amplifiers Q1-2 and Q3-4 should be matched between them and near the one in the other. Thus you can buy enough transistors of types BC550C and BC560C, and with a multimeter you match between them creating pairs with same characteristics, ensuring thus uniform behavior in the temperature changes etc. Networks RC from the R7/C3 and R12/C4 decrease the bandwidth of differential amplifiers and power amplifier in the 6.5MHZ. Resistors R8-9-10-11 function as local feedback in the differential amplifiers improving the linearity. The differential amplifiers are supplied with constant current from him current sources Q5 and Q6. The bias of current sources becomes from the combination of diodes LED D1, D2 and R20. This becomes because the combination transistor/LED ensures big thermic stability, for this reason should they are in very near distance [1]. With the TR1 trimmer we regulate the bias current of output power stage. For this reason Q8 should find itself on the heatsink so that it ensures thermic stability in the bias, so that it does not change with the temperature changes. The resistors R32-33 shape a local feedback bronchus in the output stage, because this functions as voltage amplifier. With the TR1, R3-4, C14 we regulate the amplifier output DC offset voltage, near in the zero. The transistors Q8-10-11-12-13, [Fig.1] should are placed on heatsink, adding between the transistors and the heatsink of good quality leaves mica and ointment. Inductor L1 is constituted by 6 coils of insulated cupreous wire of diameter 1.5mm, with internal inductor diameter of 16mm [2]. Adjustment Previous to we supply the amplifier with voltage, we regulate the trimmer TR2 in the mid of his way and the trimmer TR1 in biggest resistance. We connect a multimeter in output pin J4 (measurement range 200mV DC), we give voltage in the amplifier and with the TR2 we regulate so that we take DC voltage in the output as possible near in the zero. We remove the supply and connect a multimeter (range 1A or 2A) in line with one from the supply cables. We again give supply in the amplifier and with the TR1 regulate late the current, so that we take clue roughly 330mA. We leave the amplifier to work for 10 min., without audio signal in his input. Afterwards the 10-min. usually the current stabilized in 230mA roughly. If it needs we adjust late so that we take clue near in 230mA. We again check the amplifier DC offset [J4] output, for changes DC and if it needs we regulate again with the TR2. [Elektor12/93].

Part List

R1-15-16-21-22-17-18=1Kohm R33=68ohm 5W Q1-2=BC550C [matched] R2=47Kohm R35-36=6.8ohm 1W Q3-4=BC560C [matched] R3-4=10Mohm TR1=1Kohm trimmer Q5=BC560C R5-6-13-14=1.2Kohm TR2=1Mohm trimmer Q6=BC550C R7-12=47ohm C1=2.2uF 63-100V MKT Q7-11=BD140 R8-9-10-11=22ohm C2=1nF 100V MKT Q8-9-10=BD139 R19=82ohm C3-4=2.7nF 100V MKT Q12=IRF9540 R20=22Kohm C5=330pF ceramic or mylar Q13=IRF540 R23-26=56ohm C6-7=100uF 16V F1-2=Fuse 2.5A Fast R24=2.2Kohm C8=1uF 100V MKT L1=see text [2] R25=560ohm C9-11-12=100nF 100V MKT J1= 2pin connector 2.54mm step R27-30=150ohm C10-13=470uF 63V R28-29-31-34=15ohm C14=33nF 100V MKT Q8-10-11-12-13 on Heatsink R32=150ohm 5W D1-2=LED RED 3mm [see text] [1] All the resistors is 1/4W 1% except quote differently

. SPECIFICATIONS POWER RATING at 1KHZ with 0.1% THD 63W/ 8 ohm, 105W /4 ohm IMD <0.008% THD at 60W into 8 ohm and 1 KHZ <0.005% THD at 60W into 8 ohm and 20 HZ....20 KHZ <0.05% FREQUENCE RESPONSE [at 35W/8ohm, +0...-3dB] 1.5 HZ.....125 KHZ INPUT SENSITIVITY 1Vrms ΙΝPUT IMPEDANCE 48K SLOW RATE with input filter 20V/uS SIGNAL TO NOISE RATIO [at 1W/8ohm] >99dBA DAMPING FACTOR at 8ohm [20HZ...20KHZ] 160 .

Power Supply

The power supply circuit, is a classic circuit. Proposed power supply for amplifier 65W HEXFET is what appears in the above form. It has separated supply for the various supply stages, for power output stage, for control stage, for preamplifier supply and for protection stage. Whoever wants it can suppress department or add a power supply for each channel, separating completely the channels between them. For whoever it does not use the preamplifier circuit and protection can suppress proportional coil. In his input exist the soft starting circuit, that combine with the delay circuit and protection loudspeakers from DC. Output Voltages For Power Supply +V1=+35V -V1=-35V +V2=+12V -V2=-12V +V3=+35V -V3=-35V Part List

T1=2X25Vac 160VA //2X15Vac 20VA	C5-8=1000uF 25V	IC2=7912 Regulator
T2=2X25Vac 160VA	C6-9=100nF 100V MKT	F1=FUSE 2A slow block
BR1-3=200V 35A Bridge Rectifier	C7-10=10uF 25V	S1=2X2 switch 10A
BR2=4 X 1N4002	C15=33nF 630V Class X2	JF1=3 pole male plug
C1...4-11...14=10000uF 63V	IC1=7812 Regulator

Fig.2--POWER AMP. 65W HEXFET [TOP SIDE] PCB

Fig.3--POWER AMP. 65W HEXFET [Bottom side] PCB

Datasheet's

Regulators
Positive Regulators
78xx series	3 Terminal Positive Voltage Regulator +5V until +24V1A [229kb]
78Lxx series	3 Terminal Positive Voltage Regulator +5V until +24V 0.1A [146kb]
78Mxx series	3 Terminal Positive Voltage Regulator +5V until +24V 0.5A [204kb]
78Sxx series	3 Terminal Positive Voltage Regulator +5V until +24V 2A [263kb]
Negative Regulators
79xx series	3 Terminal Negative Voltage Regulator -5V until -24V 1A [110kb]
79Lxx series	3 Terminal Negative Voltage Regulator -5V until -24V 0.1A [95kb]
Adjustable - General Voltage Regulators
LM117	+1.2V...+37V 1.5A Positive Adjustable voltage Regulator [100kb]
LM217	+1.2V...+37V 1.5A Positive Adjustable voltage Regulator [100kb]
LM317	+1.2V...+37V 1.5A Positive Adjustable voltage Regulator [100kb]
LM137	-1.2V...-37V 1.5A Negative Adjustable voltage Regulator [246kb]
LM237	-1.2V...-37V 1.5A Negative Adjustable voltage Regulator [246kb]
LM337	-1.2V...-37V 1.5A Negative Adjustable voltage Regulator [246kb]
LM138	+1.2V to 32V output range. 5-Amp Adjustable Regulator
LM338	+1.2V to 32V output range. 5-Amp Adjustable Regulator
LM350	3-Amp Adjustable Regulator
LM723	Precision Voltage Regulator [136kb]
L200	Positive variable voltage regulator supplies up to 2 A at 2.85 to 36 V. [166KB]
TTL Logic [LS - HC or HCT series]
74LS00	Quad 2-Input NAND Gate [60kb]
74LS04	Hex Inverter
74LS08	Quad 2 input AND
74LS10	Triple 3-Input NAND Gate [47kb]
74LS13	SCHMITT TRIGGERS DUAL GATE/HEX INVERTER [46kb]
74LS14	SCHMITT TRIGGERS DUAL GATE/HEX INVERTER [46kb]
74LS27	TRIPLE 3-INPUT NOR GATE [37kb]
74LS30	8-Input NAND Gate [46kb]
74LS32	Quad 2 input OR
74LS42	ONE-OF-TEN DECODER [58kb]
74LS45	BCD to Decimal Decoders/Drivers [45kb]
74LS47	BCD to 7 seg decoder/driver
74LS90	Decade and Binary Counter
74LS92	Divide by 12 counter
74LS93	Binary counter
74LS121	Monostable multivibrator [305kb]
74LS154	4-Line to 16-Line Decoder/Demultiplexer [53kb]
74LS192	BCD up / down counter [492kb]
74LS193	4 bit binary up / down counter [492kb]
74HC237	3-to-8 line decoder/demultiplexer with address latches [69kb]
74LS374	3-STATE Octal D-Type Transparent Latches and Edge-Triggered Flip-Flops [180kb]
74LS390	DUAL DECADE COUNTER DUAL 4-STAGE BINARY COUNTER [72kb]
CMOS Logic
4001	Quad 2-input NOR gate
4002	Dual 4-input NOR gate
4006	CMOS 18-Stage Static Shift Register
4007	Dual Complementary Pair and Inverter
4011	Quad 2-Input NAND Buffered
4013	Dual D-Type Flip-Flop
4014	8-bit static shift register
4015	Dual 4-bit static shift register
4016	Quad Analog Switch/Quad Multiplexer [127kb]
4017	Decade Counter/Divider
4020	14-stage binary counter
4021	8-bit static shift register
4022	Divide-by-8 Counter/Divider with 8 Decoded Outputs [95kb]
4023	Triple 3-input NAND gate
4024	7-stage binary counter
4025	Triple 3-input NOR gate
4026	DEC. COUN./DIVIDER WITH DECODED 7-SEG. DISPLAY OUTPUTS
4027	Dual J-K Master/Slave Flip-Flop with Set and Reset
4028	BCD to Decimal Decoder [216kb]
4029	Binary/Decade Up/Down Counter [165kb]
4030	Quad EXCLUSIVE-OR Gate
4040	12-Stage Ripple-Carry Binary
4041	Quadruple true/complement buffer
4043	Quadruple R/S latch with 3-state outputs
4044	Quadruple R/S latch with 3-state outputs
4046	Phase-Locked Loop [185kb]
4047	Low Power Monostable/Astable Multivibrator
4049	Hex Inverting Buffer
4050	Hex Non-Inverting Buffer
4051	Single 8-Channel Analog
4052	Differential 4-Channel Analog
4053	Triple 2-Channel Multipl/Demul
4054	DISPLAY DRIVER
4055	DISPLAY DRIVER
4056	DISPLAY DRIVER
4059	Programmable divide-by-n counter
4060	14-Stage Ripple-Carry Binary C
4066	Quad Bilateral Switch
4067	Cmos Analog Multiplexer / Demultiplexer
4068	8-input NAND gate
4069	Hex Inverter
4070	Quad 2-Input EXCLUSIVE-OR Gate
4071	Quad 2-input OR gate
4072	Dual 4-input OR gate
4073	TRIPLE 3 INPUT AND GATE
4075	Triple 3-input OR gate
4077	Quad 2-Input EXCLUSIVE-NOR Gate
4081	Quad 2-Input AND Gate
4082	Dual 4-input AND gate
4093	Quad 2-Input NAND Schm.Trigger
4094	8-Bit Shift Register/Latch with 3-STATE Outputs
4104	Quad Low-to-High Voltage Translator with 3-State Outputs
4502	Strobed hex inverter/buffer
4510	Edge-triggered synchronous up/down BCD counter with a clock input
4511	BCD-to-7-Segment Latch Decade Driver
4512	8-Input Multiplexer (3-State)
4514	4-Bit Latched/4-to-16 Line Decoder
4515	4-Bit Latched/4-to-16 Line Decoder
4516	Binary Up/Down Counter
4517	Dual 64-Bit Static Shift Register
4518	Dual BCD Counter
4519	Quad 2-Input Multiplexer
4520	Dual Up Counter
4521	24-Stage Frequency Divider and Oscillator
4526	Programmable 4-Bit Binary Down Counter
4528	Dual Retriggerable Monostable Multivibrator with Reset
4532	8-Input Priority Encoder
4538	Dual Precision Monostable
4541	Programmable Timer
4543	BCD to 7-Segment Latch/Decoder/Driver with Phase Input
4553	3-Digit BCD Counter
4555	Dual 1-to-4 Line Decoder/Demultiplexer
4556	Dual 1-of-4 Decoder/Demultiplexer
4557	1-to-64 Bit Variable Length Shift Register
4583	Dual Schmitt Trigger
4584	Hex Schmitt trigger
4585	4-Bit Magnitude Comparator
4750	Frequency Synthesizer
4751	Universal Divider
4794	8-Stage Shift-and-Store Register LED Driver
4894	12-Stage Shift-and-Store Register LED Driver
4938	Dual Retriggerable Precision Monostable Multivibrator with Reset
40098	Hex Inverting Buffer (3-State)
40106	Hex Inverting Schmitt-Trigger
40174	Hex D-type flip-flop with reset; positive-edge trigger
40175	Quad D-type flip-flop with reset; positive-edge trigger
40193	4-Bit Up/Down Binary Counter
40240	Buffer/Line Driver; Inverting (3-State)
40244	Buffer/Line Driver; Non-Inverting (3-State)
40373	Octal D-Type Transparent Latch (3-State)
40374	Octal D-type flip-flop; positive-edge trigger (3-state)
Transistors
Low Power transistors
2N930	NPN LOW POWER SILICON TRANSISTOR [53kb]
2N1613	NPN - Audio output ,Video, Driver [NTE128][28KB]
2N2222A	NPN General Purpose Amplifier [161KB]
2N2905	PNP switching transistor
2N3439	NPN SILICON PLANAR EPITAXIAL HIGH VOLTAGE TRANSISTOR [54kb]
2N3440	NPN SILICON PLANAR EPITAXIAL HIGH VOLTAGE TRANSISTOR [54kb]
2N3904	NPN General Purpose Amplifier
2N3906	PNP General Purpose Amplifier
2N5401	PNP General transistor [68kb]
2N5415	PNP SILICON TRANSISTOR [67kb]
2N5416	PNP SILICON TRANSISTOR [67kb]
2N5550	NPN SILICON TRANSISTOR [69kb]
2N5551	NPN SILICON TRANSISTOR [69kb]
2N6515	High Voltage-General Porpose amplifier [NTE] [23kb]
2N4921	NPN-Medium-Power Plastic transistor [107kb]
2N4922	NPN-Medium-Power Plastic transistor [107kb]
2N4923	NPN-Medium-Power Plastic transistor [107kb]
AF125	Germanium PNP Transistor RF�IF Amp, FM Mixer OSC [NTE160][22kb]
BC107	NPN-LOW NOISE GENERAL PURPOSE (Comp.to BC177) [101KB]
BC108	NPN-LOW NOISE GENERAL PURPOSE (Comp.to BC178) [101KB]
BC109	NPN-LOW NOISE GENERAL PURPOSE (Comp.to BC179) [101KB]
BC148	NPN - Audio Amplifier, Switch [NTE123AP][23KB]
BC177	PNP-LOW NOISE GENERAL PURPOSE (Comp.to BC107) [101KB]
BC178	PNP-LOW NOISE GENERAL PURPOSE (Comp.to BC108) [101KB]
BC179	PNP-LOW NOISE GENERAL PURPOSE (Comp.to BC109) [101KB]
BC182	NPN - Audio Amplifier, Switch (Compl to BC212-BC214)
BC183	NPN - Audio Amplifier, Switch (Compl to BC212-BC214)
BC184	NPN - Audio Amplifier, Switch (Compl to BC212-BC214)
BC212	PNP - Audio Amplifier, Switch (Compl to BC182-BC184) [108KB]
BC214	PNP - Audio Amplifier, Switch (Compl to BC182-BC184) [108KB]
BC327	Small Signal Transistor (PNP) [Compl to BC337-BC338]
BC301	NPN silicon planar epitaxial transistor [Comp. to BC303] [73kb]
BC302	NPN silicon planar epitaxial transistor [Comp. to BC304] [73kb]
BC303	PNP silicon planar epitaxial transistor [Comp. to BC301] [80kb]
BC304	PNP silicon planar epitaxial transistor [Comp. to BC302] [80kb]
BC328	Small Signal Transistor (PNP) [Compl to BC337-BC338]
BC337	Small Signal Transistor (NPN) [Compl to BC327-BC328]
BC338	Small Signal Transistor (NPN) [Compl to BC327-BC328]
BC414	NPN-Audio-Switch (Comp.to BC416)[NTE123AP][25KB]
BC416	PNP-Audio-Switch (Comp.to BC414)[NTE159][26KB]
BC461	PNP High Voltage Amplifier & Driver [NTE189][23kb]
BC516	PNP -Darligton, High Current (Comp.to BC517)
BC517	NPN -Darligton, High Current (Comp.to BC516)
BC546	NPN-Audio-Switch (Comp.to BC556) [57KB]
BC547	NPN-Audio-Switch (Comp.to BC557) [57KB]
BC548	NPN-Audio-Switch (Comp.to BC558) [57KB]
BC549	NPN-Audio-Switch (Comp.to BC559) [57KB]
BC550	NPN-Audio-Switch (Comp.to BC560) [57KB]
BC556	PNP-Audio-Switch (Comp.to BC546) [55KB]
BC557	PNP-Audio-Switch (Comp.to BC547) [55KB]
BC558	PNP-Audio-Switch (Comp.to BC548) [55KB]
BC559	PNP-Audio-Switch (Comp.to BC549) [55KB]
BC560	PNP-Audio-Switch (Comp.to BC550) [55KB]
BC635	NPN medium power transistor [Compl to BC636]
BC636	PNP medium power transistor [Comp.to BC635 ]
BC637	NPN medium power transistor [Compl to BC638]
BC638	PNP medium power transistor [Comp.to BC637 ]
BC639	NPN medium power transistor [Compl to BC640]
BC640	PNP medium power transistor [Comp.to BC639 ]
BCY70	PNP general purpose transistor
BCY71	PNP general purpose transistor
BCY78	PNP switching transistor
BCY79	PNP switching transistor
BCY87	Matched dual NPN transistor in a TO-71- SOT31 metal package.
BCY88	Matched dual NPN transistor in a TO-71- SOT31 metal package.
BCY89	Matched dual NPN transistor in a TO-71- SOT31 metal package.
CA3046	General purpose NPN transistor array
CA3096	General purpose transistor array [3 NPN / 2 PNP]
MPSL01	NPN-General purpose, High Voltage Amp.
MPSL51	PNP General Purpose Amplifier
MPSA06	NPN-High Voltage,General Purpose Amplifier [NTE] [23kb]
MPSA42	NPN-Silicon Transistor High Voltage,General Purpose Amplifie [882KB]
MPSA43	NPN-Silicon Transistor High Voltage,General Purpose Amplifier (Comp.to MPSA93) [295KB]
MPSA56	PNP-Audio amplifier. switch [NTE] [25kb]
MPSA92	PNP-Silicon Transistor High Voltage,General Purpose Amplifier (Comp.to MPSA43) [73KB]
MPSA93	PNP-Silicon Transistor High Voltage,General Purpose Amplifier (Comp.to MPSA43) [73KB]
SSM2210	Dual matched NPN transistor
SSM2220	Dual matched PNP transistor
Medium and High Power transistors
2N3055	NPN- Power Amp. (Comp. to MJE2955)
2N6283	Darligton, NPN-Power Amp.(Comp. to 2N6286) [80K]
2N6284	Darligton, NPN-Power Amp.(Comp. to 2N6287) [80K]
2N6286	Darligton, NPN-Power Amp.(Comp. to 2N6283) [80K]
2N6287	Darligton, PNP-Power Amp.(Comp. to 2N6284) [80K]
2SC2922	Silicon NPN Epitaxial Planar Transistor (Comp. to 2SA1216)
2SA1216	Silicon PNP Epitaxial Planar Transistor (Comp. to 2SC2922)
BD135	NPN- Audio Power Amplifier, Switch (Comp.to BD136) [39KB]
BD136	PNP- Audio Power Amplifier, Switch (Comp.to BD135) [105KB]
BD137	NPN- Audio Power Amplifier, Switch (Comp.to BD138) [39KB]
BD138	PNP- Audio Power Amplifier, Switch (Comp.to BD137) [105KB]
BD139	NPN- Audio Power Amplifier, Switch (Comp.to BD140) [39KB]
BD140	PNP- Audio Power Amplifier, Switch (Comp.to BD139)
BD162	NPN Audio Power Amplifier, Switch Transistor [NTE152][22kb]
BD203	PNP- Audio Power Amplifier, Switch (Comp.to BD204)[NTE182][23KB]
BD204	PNP- Audio Power Amplifier, Switch (Comp.to BD203)[NTE183][23KB]
BD239C	NPN Epitaxial Silicon Transistor
BD240C	PNP Epitaxial Silicon Transistor
BD241C	NPN-3 AMPERE POWER TRANSISTOR 80, 100 VOLTS 40 WATTS (Comp.to BD242C) [109kb]
BD242C	PNP-3 AMPERE POWER TRANSISTOR 80, 100 VOLTS 40 WATTS (Comp.to BD241C) [109kb]
BD243	NPN Epitaxial Silicon Transistor [39kb]
BD243C	NPN Epitaxial Silicon Transistor
BD249	NPN SILICON POWER TRANSISTOR [94KB]
BD250	PNP SILICON POWER TRANSISTOR [94KB]
BD375	NPN Epitaxial Silicon Transistor (Comp.to BD376) [43KB]
BD376	PNP Epitaxial Silicon Transistor (Comp.to BD375) [43KB]
BD377	NPN Epitaxial Silicon Transistor (Comp.to BD378) [43KB]
BD378	PNP Epitaxial Silicon Transistor (Comp.to BD377) [43KB]
BD379	NPN Epitaxial Silicon Transistor (Comp.to BD380) [43KB]
BD380	PNP Epitaxial Silicon Transistor (Comp.to BD379) [43KB]
BD543	NPN SILICON POWER TRANSISTOR [85KB]
BD529	NPN- High Voltage Amplifier, Driver (Comp. to BD530)[NTE188][23KB]
BD530	PNP- High Voltage Amplifier, Driver (Comp. to BD529)[NTE189][23KB]
BD533	NPN SILICON POWER TRANSISTOR (Comp.to BD534) [45KB]
BD534	PNP SILICON POWER TRANSISTOR (Comp.to BD533) [45KB]
BD535	NPN SILICON POWER TRANSISTOR (Comp.to BD536) [45KB]
BD536	PNP SILICON POWER TRANSISTOR (Comp.to BD535) [45KB]
BD537	NPN SILICON POWER TRANSISTOR (Comp.to BD538) [45KB]
BD538	PNP SILICON POWER TRANSISTOR (Comp.to BD537) [45KB]
BD677	Darligton, NPN-Power Amp.(Comp. to BD678) [42KB]
BD678	Darligton, PNP-Power Amp.(Comp. to BD677) [42KB]
BD679	Darligton, NPN-Power Amp.(Comp. to BD680) [42KB]
BD680	Darligton, PNP-Power Amp.(Comp. to BD679) [42KB]
BD681	Darligton, NPN-Power Amp.(Comp. to BD682) [42KB]
BD682	Darligton, PNP-Power Amp.(Comp. to BD681) [42KB]
BD591	NPN Audio Power Output and Medium Power Switching [NTE196] [25KB]
BD592	PNP Audio Power Output and Medium Power Switching [NTE197] [25KB]
BDX53C	NPN-SILICON POWER DARLINGTON TRANSISTOR (Comp. to BDX54C) [81KB]
BDX54C	PNP-SILICON POWER DARLINGTON TRANSISTOR (Comp. to BDX53C) [81KB]
BDW51	NPN silicon power transistor [NTE60] [25KB]
BU208A	HIGH VOLTAGE FAST-SWITCHING NPN POWER TRANSISTOR [84KB]
BU508A	HIGH VOLTAGE FAST-SWITCHING NPN POWER TRANSISTOR [84KB]
MJ802	NPN-Transistor for High Power Audio Amplifier (Comp. to MJ4502)[NTE][24kb]
MJ2955	PNP- Power Amp. (Comp. to 2N3055)
MJ4502	PNP-Transistor for High Power Audio Amplifier (Comp. to MJ802)[NTE][24kb]
MJ15003	NPN- Power Amp. (Comp. to MJ15004) [120KB]
MJ15004	PNP- Power Amp. (Comp. to MJ15003) [120KB]
MJE340	NPN-Medium POWER TRANSISTOR (Comp. to MJE350) [67KB]
MJE350	PNP-Medium POWER TRANSISTOR (Comp. to MJE340) [70KB]
MJ15022	NPN High Voltage Silicon High Power Transistor (Comp. to MJ15023)
MJ15024	NPN High Voltage Silicon High Power Transistor (Comp. to MJ15025)
MJ15023	PNP High Voltage Silicon High Power Transistor (Comp. to MJ15022)
MJ15025	PNP High Voltage Silicon High Power Transistor (Comp. to MJ15024)
MJE15028	NPN POWER TRANSISTOR (Comp. to MJE15029) [218KB]
MJE15029	PNP POWER TRANSISTOR (Comp. to MJE15028) [218KB]
MJE15030	NPN POWER TRANSISTOR (Comp. to MJE15031) [218KB]
MJE15031	PNP POWER TRANSISTOR (Comp. to MJE15030) [218KB]
PMD16K100	Darligton, NPN-Power Amp.(Comp. to PMD17K100)[NTE251][27KB]
PMD17K100	Darligton, PNP-Power Amp.(Comp. to PMD16K100)[NTE252][27KB]
TIP31	NPN Epitaxial Silicon Transistor (Comp. to TIP32) [38KB]
TIP32	PNP Epitaxial Silicon Transistor (Comp. to TIP31) [38KB]
TIP120	NPN EPITAXIAL DARLINGTON TRANSISTOR [Complementary to TIP125]
TIP121	NPN EPITAXIAL DARLINGTON TRANSISTOR [Complementary to TIP126]
TIP122	NPN EPITAXIAL DARLINGTON TRANSISTOR [Complementary to TIP127]
TIP125	PNP EPITAXIAL DARLINGTON TRANSISTOR [Complementary to TIP120]
TIP126	PNP EPITAXIAL DARLINGTON TRANSISTOR [Complementary to TIP121]
TIP127	PNP EPITAXIAL DARLINGTON TRANSISTOR [Complementary to TIP122]
TIP140	NPN Darlington Power Transistor (Comp. toTIP145)[218KB]
TIP141	NPN Darlington Power Transistor (Comp. toTIP146)[218KB]
TIP142	NPN Darlington Power Transistor (Comp. toTIP147)[218KB]
TIP145	PNP Darlinton Power Transistor (Comp. to TIP140)[218KB]
TIP146	PNP Darlinton Power Transistor (Comp. to TIP141)[218KB]
TIP147	PNP Darlinton Power Transistor (Comp. to TIP142)[218KB]
TIP2955	PNP- Power Amp. (Comp. to TIP3055)
TIP3055	NPN- Power Amp. (Comp. to TIP2955)
Fet transistors
2N5248	N-Ch, JFet, VHF Amplifier/Mixer [NTE][25KB]
2N5457	N-Ch, JFet, General purpose amlp.,Switch [NTE][21KB]
2N5460	P-Ch, JFet, General purpose A.F. amplifier[NTE][22KB]
2N5484	N-Ch JFet, VHF Amplifier/Mixer
2N5486	N-Ch JFet, VHF Amplifier/Mixer
2N7000	N-Channel 60-V (D-S) MOSFET
2N7002	N-Channel 60-V (D-S) MOSFET
BS170	N-Ch, Small Signal MOSFET 500 mAmps, 60 Volts [52kb]
BF245C	N-Channel JFET Silicon Transistors General Purpose AF Amplifier [97KB]
BF256B	N�Channel JFET Silicon Transistor General Purpose AF Amplifier [NTE133] [20KB]
MPF102	N�Channel JFet, VHF Amplifier
J210	N-channel field-effect transistor
J211	N-channel field-effect transistor
J212	N-channel field-effect transistor
VQ1000	N-Channel 60-V (D-S) MOSFET
VN10KLS	N-Channel 60-V (D-S) MOSFETs with Zener Gate
VN0610L	N-Channel 60-V (D-S) MOSFETs with Zener Gate
VN2222L	N-Channel 60-V (D-S) MOSFETs with Zener Gate
Fet Power Transistors
2SK1530	N-Channel MOSFET POWER TRANSISTOR [222KB]
2SJ201	P-Channel MOSFET POWER TRANSISTOR [242KB]
2SJ160	Silicon P-Channel MOS FET [Comp. to 2SK1056]
2SJ161	Silicon P-Channel MOS FET [Comp. to 2SK1057]
2SJ162	Silicon P-Channel MOS FET [Comp. to 2SK1058]
2SK1056	Silicon N-Channel MOS FET [Comp. to 2S160]
2SK1057	Silicon N-Channel MOS FET [Comp. to 2S161]
2SK1058	Silicon N-Channel MOS FET [Comp. to 2S162]
BUZ71	N-Channel Power 14A 50V 0.100 Ohm, MOSFET
MTP3055V	N�Channel Power MOSFET 12 Amps 60 Volts TO�220
IRF540	N�Channel Hexfet Power transistor [100kb]
IRF9540	P�Channel Hexfet Power transistor [140kb]
IC's Analog
AD711	Precision, Low Cost, High Speed, BiFET Op Amp
BUF634	250mA HIGH-SPEED BUFFER operational amplifier by Burr-Brown
CA3130	15MHz, BiMOS Operational Amplifier with MOSFET Input/CMOS Output
LH0032	Ultra Fast FET-Input Operational Amplifier [277KB]
LF351	Wide Bandwidth JFET Input Operational Amplifier
LF411	Low Offset, Low Drift JFET Input Operational Amplifier
LM108	Single Precision Operational Amplifier [288KB]
LM208	Single Precision Operational Amplifier [288KB]
LM308	Single Precision Operational Amplifier [288KB]
LM833	Dual audio operational amplifier, Low Noise [445KB]
LM358	DUAL OPERATIONAL AMPLIFIER [126kb]
LM359	Dual, High Speed, Programmable, Current Mode (Norton) Amplifier[415KB]
LM324	QUADRUPLE OPERATIONAL AMPLIFIER [105kb]
LM391	Audio Power Driver [237kb]
LM393	Dual Differential Comparator
LM1458	Dual general-purpose operational amplifier
LM3900	QUADRUPLE NORTON OPERATIONAL AMPLIFIER
LT1028	Ultra Noise Precision High Speed Op Amp By Linear Technology
LT1128	Ultra Noise Precision High Speed Op Amp By Linear Technology
NE5532	Dual audio operational amplifier, Low Noise [125KB]
NE5534	Single audio operational amplifier, Low Noise [290KB]
NE4558	Dual general-purpose operational amplifier replacement for the RC/RM/RV4558
OP07C	Single Ultralow Offset Voltage Operational Amplifier
OP27	Low-Noise Precision High-Speed Operational Amplifier
OP37	Low-Noise Precision High-Speed Operational Amplifier
OP275	Dual Bipolar-JFET, Audio Operational Amplifier
OPA603	Sigle High Speed, Current-Feedback, High Voltage operational amplifier by Burr-Brown
OPA604	FET-Input, Low Distortion OPERATIONAL AMPLIFIER
OPA627	Sigle Precision High-Speed Difet operational amplifier by Burr-Brown
OPA637	Sigle Precision High-Speed Difet operational amplifier by Burr-Brown
TL071	Single JFET-Input oper. amp. , Low Noise [267KB]
TL072	Dual JFET-Input oper. amp. , Low Noise [267KB]
TL074	Quad JFET-Input oper. amp. , Low Noise [267KB]
TL081	Single JFET-Input oper. amp. [369KB]
TL082	Dual JFET-Input oper. amp. [369KB]
TL084	Quad JFET-Input oper. amp. [369KB]
TLC271	LinCMOS..PROGRAMMABLE LOW-POWER OPERATIONAL AMPLIFIER [1.16MB]
TLC272	LinCMOS.... PRECISION DUAL OPERATIONAL AMPLIFIER [560KB]
TLC274	LinCMOS.... PRECISION QUAD OPERATIONAL AMPLIFIER [683KB]
TLC3702	DUAL MICROPOWER LinCMOS VOLTAGE COMPARATOR
SA4558	Dual general-purpose operational amplifier replacement for the RC/RM/RV4558
SE4558	Dual general-purpose operational amplifier replacement for the RC/RM/RV4558
NJM4558	Dual general-purpose operational amplifier
MN3004	512 STAGE LOW NOISE BBD [562kb]
TDA7250	HI-FI DUAL AUDIO DRIVER
IC's Power [Analog]
L165	3A POWER OPERATIONAL AMPLIFIER (20W) [106KB]
LM388	1.5W Audio Power Amplifier [177kb]
LM1875	20W Audio Power Amplifier [483kb]
TDA1516BQ	24 W BTL or 2 x 12 watt stereo car radio power amplifier [77KB]
TDA1519C	22 W BTL or 2 X 11 W stereo power amplifier [122KB]
TDA1563Q	2 x 25 W high efficiency car radio power amplifier [279KB]
TDA2002	Single Power Amplifier 8W [NTE1232][26KB]
TDA2005	Dual Power Amplifier 20W
TDA2004	10 + 10W STEREO AMPLIFIER FOR CAR RADIO [165KB]
TDA2030	Single Power Amplifier 14W [190KB]
TDA7294	100W DMOS AUDIO AMPLIFIER WITH MUTE/ST-BY [373KB]
STK4036 II	Integrated Circuit Module, AF PO, Dual Power Supply 50W [69KB]
STK4036 X	Integrated Circuit Module, AF PO, Dual Power Supply 50W [133KB]
STK4038 II	AF Power Amplifier (Split Power Supply) 60 W min
STK4040 X	AF Power Amplifier (Split Power Supply) 70 W min [106KB]
STK4040 V	AF Power Amplifier (Split Power Supply) 70 W min [293KB]
STK4042 II	AF Power Amplifier (Split Power Supply) 80 W min [50KB]
STK4044 II	Integrated Circuit Module, AF Power Amplifier, SingleChannel, 100W Min [63KB]
STK4044 V	Integrated Circuit Module, AF Power Amplifier, SingleChannel, 100W Min [192KB]
STK4048 XI	Integrated Circuit Module, AF Power Amplifier, SingleChannel, 150W Min [201KB]
STK4050 V	Integrated Circuit Module, AF Power Amplifier, SingleChannel, 200W Min [51KB]
STK...series	More data sheets for STK..series in PDF archives.
Display Drivers
LM3914	10-Step Dot/Bar Display Driver, Linear scale [366KB]
LM3915	10-Step Dot/Bar Display Driver, Logarithmic scale [602KB]
LM3916	10-Step Dot/Bar Display Driver [509KB]
UAA180	LED driver Light band or light spot display operation for max. 12 emitting diodes [88KB]
CA3161E	BCD to Seven Segment Decoder/Driver [68KB]
CA3162E	A/D Converter for 3-Digit Display [522KB]
ICL7136	3 1/2 Digit LCD, Low Power Display, A/D Converter [406kb]
PLL Stereo Decoders
LM1800	PLL Stereo Decoder [NTE743][25KB]
CA3090P	Stereo Multiplex Decoder (Comp.to NTE789 From NTE)[33KB]
MC1310P	FM Stereo Demodulator (Comp. to NTE801 From NTE)[20KB]
Timers - Generators
555	GENERAL PURPOSE DUAL BIPOLAR TIMER [111kb]
556	Dual 555 [96kb]
MN3101	CLOCK GENERATOR / DRIVER [562kb]
XR2206	Monolithic Function Generator [192KB]
Optocuplers
4N25	GENERAL PURPOSE 6-PIN PHOTOTRANSISTOR OPTOCOUPLERS [156KB]
4N26
4N27
4N28
4N35	GENERAL PURPOSE 6-PIN PHOTOTRANSISTOR OPTOCOUPLERS [152KB]
4N36
4N37
H11A1	OPTICALLY COUPLED ISOLATORS
H11A2
H11A3
SCR - TRIAC
BTY79-800R	Silicon Controlled Rectifier 25A[NTE5531][19KB]
C106D	Silicon Controlled Rectifier 4A [52KB]
Clock
MM5314N	Clock Alarm chip from National Semiconductor Html
Diodes
1N914	High Conductance Fast Diode
1N916	High Conductance Fast Diode
1N4000 series	1 Amp. Silicon Rectifier Diodes (1A)
1N4148	Small-Signal Diode (100mA)
1N4448	High Conductance Fast Diode
1N5408	General Purpose Plastic Rectifier (3A) [54kb]
IN5236B	7.6V 0.5W Zener Voltage Regulator Diode [84kb]
1N5240B	10V 0.5W Zener Voltage Regulator Diode [84kb]
1N5252B	24V 0.5W Zener Voltage Regulator Diode [84kb]
1N5817	Schottky Barrier Rectifer
1N5819	Schottky Barrier Rectifer
BY229	Rectifier diodes fast, soft-recovery
0A91	Point Contact Diode
P600A	HIGH CURRENT PLASTIC SILICON RECTIFIER
Tubes
300B	Power triode intended for use in class A, AB or B audio amplifiers.[52KB]
5U4G	TUBE Rectifier
6SN7	Dual triode
6BX7 GT	Dual Triode
6DJ8	Small signal dual triode intended for line-level amp. or driver similar to ECC88 [180KB]
6N1P	Small signal dual triode intended for line-level amp. or driver similar to ECC88 [180KB]
6922	Small signal dual triode intended for line-level amp. or driver similar to ECC88 [637 kB ]
12AT7	A.F. Dual triode similar to ECC81 [356KB]
12AU7	A.F. Dual triode similar to ECC82 [434KB]
12AX7	A.F. Dual triode similar to ECC83 [292 kB]
E80CC	Dual Triode for A.F and DC amplifiers [279 Kb]
ECC81	A.F. Dual triode similar to 12AT7 [97KB]
ECC82	A.F. Dual triode similar to 12AU7 [94KB]
ECC83	A.F. Dual triode similar to 12AX7 [92KB]
ECC88	Small signal dual triode similar to 6922, 691P, 6DJ8
EL34	High Power penthode [504KB]
EL84	High Power A.F output Pentode
Z2C	TUBE Rectifier
KT88	Power Tetrode for output stage of AF amplifier
Registor
Resistor code color Html
Resistor IEC series Html

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