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.
This interesting touch dimmer was obtained in a 1993 publication, basically consisting of a...
This circuit was found in an Electronic Design from the 90s. The circuit uses a type J...
This amplifier was published in Radio Electronics magazine in September 1959. The 8-transistor circuit...