This flasher circuit consists of an astable multivibrator with the frequencies given by the capacitors. The circuit is from 1965 using light bulbs, but LEDs can be used. Power comes from 4 batteries.
This circuit is from a June 1992 Radio Electronics. The circuit is for 4.5 MHz signals from old...
This circuit, calibrated to the degree Celsius scale, was found in a National Semiconductor...
The photocontrol that we give in this project of a 1982 documentation allows to activate a circuit...