High speed warning device


Posted on Jan 19, 2013

A1 amplifies and regulates the signal from the spark coil. A2 converts frequency to voltage so that its output is a voltage proportional to engine rpm. A3 compares the tachometer voltage with the reference voltage and turns on the output transistor at the set speed


High speed warning device
Click here to download the full size of the above Circuit.

Amplifier A4 is used to generate an audible tone whenever the set speed is exceeded.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Car Battery Charger
Pulsed Charger for Lead Acid batteries (NE555)
Audio IC TA8215 based on 15W Car Audio Amplifier
12V to +/- 20V DC Converter Circuit
Circuit diagram 500mW FM PLL transmitter 88-108MHz using LMX3206 and PIC16F870
Auto Fade Implementation on Audio Signals Project PCB
Pulse Circuits for Infrared LEDs and Visible Diode Lasers
The application circuit of TDA7088 FM integrated circuit
Two motor speed control circuit and the main level indicating circuit



Top