This 500 MHz oscillator has an output power of 1 W when powered by a 20 V source. The circuit was suggested by RCA in a 70's documentation.
This receiver with two common JFETs was found in an old English documentation. The phone is...
This TTL circuit with the 7493 makes the binary count of the pulses sent by a flip-flop with the...
This circuit was found in a Popular Electronics from the 90s. The counter circuit is not common...