Using a common crystal diode and a 741, this circuit can be used to detect microwaves. The circuit is from old documentation and the switch selects the gains.
The CMOS 4046 integrated circuit is not very common today, consisting of a very efficient PLL for...
This symmetrical power source for currents up to 1 A was found in a 1986 documentation, serving...
Based on the LF256 operational amplifier, this circuit was found in the September 1989 issue of...