The circuit in the figure is an amplifier with gain 10 for alternating signals using the 741. The circuit is from an article in the Radio Electroics magazine of May 1989.
This circuit is a wireless temperature transmitter for RF signals in the range of 0.2 to 2 MHz...
We found this circuit in an old Radio Electronics. Components can be replaced by modern...
This immobilizer circuit for vehicles was found in a 80’s Hands On Electronics. The circuit...