Simple Wireless Car Tachometer Circuit – Electronic Components and Parts List. In a car, a tachometer is designed to measure the speed or rotations per minute of a rotating shaft. Below schematic depicts the design of a Simple Wireless Car Tachometer Circuit to be used for measuring car’s engine speed.

SimpleWirelessCarTachometerCircuit_t

Simple Wireless Car Tachometer Circuit – Components and Parts List:

R1, R2, R9 _____ 1K 1/2 W Resistor   
R3 ___________ 47K 1/2 W Resistor   
R4 ___________ 10K 1/2 W Resistor   
R5, R6 ________ 25K Trim Pot   
R7 ___________ 10K Trim Pot   
R8 ___________ 200 Ohm 2 W Resistor   
R10 __________ 15K 1/2 W Resistor   
R11 __________ 2.2K 1/2 W Resistor
C1 ___________ 0.47uF Capacitor   
C2 ___________ 47uF Electrolytic Capacitor   
D1 ___________ 8V 1W Zener Diode   
D2, D3, D4 _____ 1N914 Diode   
M1 ___________ 200uA Meter   
Q1, Q2 _______ 2N3391A Transistor
S2 ___________ Three Position Single Pole Rotary Switch   

Other components:
Telescoping Radio Antenna
Enclosure
Power Cable and Battery Connector



Related Post

Subaru Impreza RS Engine Control Module Pinouts (2004)
1975 Mercedes Benz 280 S Wiring Diagram and Electrical Troubleshooting
2009 Chevrolet Corvette Instrument Panel Fuse Block and Relay Table
Samsung Color Television Receiver TV Wiring Diagram KS3A(P) Chassis
BMW Z4 E85 Central Locking System Wiring and Schematic