This circuit from the 1980s uses an operational amplifier that is uncommon today. The circuit can be designed with modern operators. The gain is 40 dB.
The purpose of this circuit is to test power supplies functioning as a variable load that can...
This circuit found in the October 1975 issue of Radio Electronics magazine uses an integrated...
We found this circuit in an old Argentine publication from the 1970s. The transistor can be the...