Schema for flashing the dark
Electronic flasher Schema:
The electrical diagram of Figure 1 shows the use of four NAND gates contained in the 74HC132 integrated circuit (which may be replaced by the 74LS132). The first three gates IC1-A, IC1-B and IC1-C are used in stage oscillator whose frequency is determined by the C1 values R1 and R2, the third IC1-D is connected in inverter to blink the LED DL1 and DL2.
These integrated circuits operating with 5 V and 9 V batteries 6F22 being decidedly convenient, the voltage is reduced and stabilized by a 78L05 regulator.
Turning the R2 cursor from one end of the track to another, flashing pass 0.5 to 3 chips per second.
The circuit is installed in a small pocket fi nally lated as a way to put a belt around his waist (cycling, walking, etc.).
You will find it flashing safety is very effi cient in the dark.
There is nothing to prevent the build number (the cost is ridiculous) and arrange them in several places (legs, back, bike, scooter ...) in order to increase visibility.
List of electronic components:
R1 ............... 2.2 kW
R2 ............... 10 kW trimmer
R3 ..... .......... 220 Ω
R4 ............... 220 Ω
C1 ............... 47 uF electrolytic
C2 ............... 47 uF electrolytic
C3 ............... 47 uF electrolytic
DL1 ............ . diode LED
DL2 ............. diode LED
IC1 .............. SN74HC132 integrated
IC2 ............. . MC78L05 integrated
S1 ............... switch
(Unless otherwise specified, all resistors
are 1/4 W 5%)
The electrical diagram of Figure 1 shows the use of four NAND gates contained in the 74HC132 integrated circuit (which may be replaced by the 74LS132). The first three gates IC1-A, IC1-B and IC1-C are used in stage oscillator whose frequency is determined by the C1 values R1 and R2, the third IC1-D is connected in inverter to blink the LED DL1 and DL2.
Figure 1: Diagram of the night flashing bicycle or pedestrian.
These integrated circuits operating with 5 V and 9 V batteries 6F22 being decidedly convenient, the voltage is reduced and stabilized by a 78L05 regulator.
Turning the R2 cursor from one end of the track to another, flashing pass 0.5 to 3 chips per second.
Figure 2: Pinouts regulator
78L05 seen from below and LED
side view.
The circuit is installed in a small pocket fi nally lated as a way to put a belt around his waist (cycling, walking, etc.).
You will find it flashing safety is very effi cient in the dark.
There is nothing to prevent the build number (the cost is ridiculous) and arrange them in several places (legs, back, bike, scooter ...) in order to increase visibility.
Figure 3: Circuit Pinouts
integrated 74LS132 or 74HC132 seen
from above.
List of electronic components:
R1 ............... 2.2 kW
R2 ............... 10 kW trimmer
R3 ..... .......... 220 Ω
R4 ............... 220 Ω
C1 ............... 47 uF electrolytic
C2 ............... 47 uF electrolytic
C3 ............... 47 uF electrolytic
DL1 ............ . diode LED
DL2 ............. diode LED
IC1 .............. SN74HC132 integrated
IC2 ............. . MC78L05 integrated
S1 ............... switch
(Unless otherwise specified, all resistors
are 1/4 W 5%)