Flash Signal Alarm Circuit

Posted on May 19, 2012

This circuit is useful if you need a low-energy flashing alarm. The 200 to 400-dc supply should have enough internal resistance to charge the 0.5 capacitor between flashes, about 2 or 3 time constants, which means about 500 kQ to 1 for a 1-s rate.

Flash Signal Alarm Circuit
Click here to download the full size of the above Circuit.

Use lower values for higher rates.

Leave Comment

characters left:

New Circuits



Popular Circuits

Low Noise Moving Coil Audio Preamplifier
Simple split power supply
Vocal Eliminator
Three Bit flash Analog to Digital Converter Circuit
6V6 6J5 Class A Vacuum Tube (Valve) Amplifier Circuit
pwr amp
Using C-52 EVB for simple robot experiments
TNT1541 diy zero-oversampling dac
Mains under voltage voltage protection circuit
Hardware circuit C51 microcontroller serial communication
Temperature control circuit diagram with three-wire serial interface smart temperature sensors DS1620