SCHEMA PREAMPLIFIER WITH LOW INPUT IMPEDANCE
SCHEMA PREAMPLIFIER:
This preamplifier present the characteristic of having a low input impedance, it is therefore perfectly appropriate to be used with magnetic transducers: a low impedance dynamic micro magnetic heads, phone sensors.
Its amplification is very high, therefore, whether it should be reduced, there should be a series trimmer R3 100 ohms. The system can be powered by a voltage between 9etl8Volts. For its realization, we must
follow the implementation scheme.
LIST OF ELECTRONIC COMPONENTS: All resistors are 1/4 watt unless otherwise noted. R = 1 Kohm R2 = lKohm R3 = 10Kohms R4 = 10Kohras R5 = 10Kohms R6 = 10Kohms R7 = 100Kohms R8 = 100Kohms Cl = 100uF16Velec. C2 = 10uF16Velec . C3 = 4,7uF16Velec. C4 = 47uF16Velec. C5 = 47uF16Velec. T1 BC237 = T2 = BC237 1 clip for 9 volt battery. PRINTED CIRCUIT INPUT PREAMPLIFIER WITH LOW IMPEDANCE
This preamplifier present the characteristic of having a low input impedance, it is therefore perfectly appropriate to be used with magnetic transducers: a low impedance dynamic micro magnetic heads, phone sensors.
Its amplification is very high, therefore, whether it should be reduced, there should be a series trimmer R3 100 ohms. The system can be powered by a voltage between 9etl8Volts. For its realization, we must
follow the implementation scheme.
LIST OF ELECTRONIC COMPONENTS: All resistors are 1/4 watt unless otherwise noted. R = 1 Kohm R2 = lKohm R3 = 10Kohms R4 = 10Kohras R5 = 10Kohms R6 = 10Kohms R7 = 100Kohms R8 = 100Kohms Cl = 100uF16Velec. C2 = 10uF16Velec . C3 = 4,7uF16Velec. C4 = 47uF16Velec. C5 = 47uF16Velec. T1 BC237 = T2 = BC237 1 clip for 9 volt battery. PRINTED CIRCUIT INPUT PREAMPLIFIER WITH LOW IMPEDANCE
