This flasher or light pulsator can be used in an ordinary flashlight. The circuit can be adapted to use a lamp instead of an LED. Transistors support equivalents. C1 determines the frequency range.
We found this circuit in an old American documentation for hams. The circuit serves as a telegraph...
This General Electric circuit, in a documentation from the 1960s, allows the use of high...
Found in a 90s Silicon Chip documentation, this circuit provides a current of 3 A and the voltages...