This circuit was featured in the March 1972 issue of Radio Electronics magazine. It adds automatic gain control to turntables by acting directly on the cartridge signal.
This circuit activates a relay after a time given by C1 and R1. The circuit is from a Radio...
This circuit can be used as a control shield for microcontrollers of all types. The supply is made...
In this circuit, D.A. which is actually O. A. of an operational amplifier, which can be any type...