We found this circuit in a Texas Instruments documentation from the 80s. The circuit uses simple power source and the frequency depends on C1 and R1 basically.
We found this circuit in an old documentation. Its purpose is to turn on warning lights when the...
This percussion circuit was found in an Electronics World of 1968. The transistor may be general...
We found this transmitter circuit with a single chip in the Motorola Linear Databook of 1990. The...