This circuit was found in a 1970 US publication. Transistors are still common and the circuit can be used as a PWM shield or pulse transmission modulator.
This circuit uses the SQ3524, a switching integrated circuit. The circuit was found in the April...
This power amplifier configuration can be used in a public address system (ads) in the car. The...
The 7401 is a different member of the TTL family, as it consists of four NAND ports, but with the...