The circuit is from the MC1539 manual, an operational one close to the 741. The transistor admits equivalent and must be mounted in a good heat sink.
This circuit was obtained in a Hands-On Electronics from the 90's. The circuit turns on one LED at...
This low power circuit for the FM band was found in a spy book from the 90s. The tunnel diode is...
This oscillator is used to modulate video game signals or even small cameras so that they can be...