This instrumentation circuit was found in the September 1989 Radio Electronics magazine. The circuit uses an analog indicator and the power supply must be symmetrical.
We found this circuit in a documentation from the 50s. It is based on CK722 germanium transistors. The...
We discovered this circuit in an English magazine that no longer exists. The magazine is from...
This circuit inverts the polarity of a 12 V input, providing an output of 15 V x 100 mA. The...