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 Home » Tests and Measurement » Wireless Auto Tachometer
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Wireless Auto Tachometer    
Wireless Auto Tachometer
Anyone performing their own automobile tune-ups knows how important it is to know your engines speed. With this tachometer, you can measure your engines speed without any connections or annoying timing lights.





C1 1 0.47uF Capacitor
C2 1 47uF Electrolytic Capacitor
D1 1 8V 1W Zener Diode
D2, D3, D4 3 1N914 Diode
M1 1 200uA Meter
Q1, Q2 2 2N3391A Transistor
R1, R2, R9 3 1K 1/2 W Resistor
R3 1 47K 1/2 W Resistor
R4 1 10K 1/2 W Resistor
R5, R6 2 25K Trim Pot
R7 1 10K Trim Pot
R8 1 200 Ohm 2 W Resistor
R10 1 15K 1/2 W Resistor
R11 1 2.2K 1/2 W Resistor
S1 1 SPST Togglae Switch
S2 1 Three Position Single Pole Rotary Switch
MISC 1 Telescoping Radio Antenna, Enclosure, Power Cable and Battery Connector




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