Circuit diagrams and schematics - Electronic projects

Pushbutton activated Very simple circuitry Pushing on P1 allows C1 charging to full 12V battery supply. Therefore Q1 is driven hard-on, driving in turn Q2 and its Relay load. The headlights are thus activated by means of the Relay contact wired in parallel to the vehicle’s headlights switch. RL1 remains activated until C1 is almost [...]

This circuit was requested from an email. It will allow your car headlights to flash on and off at the same time or it will cause them to flash alternately. The circuit is based on the 555 timer or LM7555 timer. It is used in the astable mode. The 555 timer output will go high [...]