This circuit was found in a 90s EDN. Its purpose is to increase the efficiency of operational amplifiers. Power MOSFETs and inverted zeners support equivalents.
This switching regulator circuit with less than 100 mV ripple was found in a 1980s documentation. The...
This circuit has a frequency range of 30 Hz to 100 kHz with an output signal of 1 Vrms. We found...
Using 555 integrated circuits, this alarm circuit was found in a 90s American documentation. The signal...