We found this circuit in the January 1978 issue of Radio Electronics magazine. The integrated circuit is from that time and is powered by a 9 V battery. The signal must be applied to an amplifier.
We found this circuit in a publication on operational amplifiers from 1978. The circuit is made...
This circuit allows the detection of RF signals using the lowest range of direct currents of a...
This circuit was found in the Radio Electronics magazine of May 1990. The supply voltage depends on...