This configuration makes use of currently uncommon components. In fact, we found it in documentation from the 70s. Equivalent operational amplifiers can be used.
This short-range FM transceiver uses a headset to listen. We found the circuit in a Japanese...
This UHV generator circuit or ultra-high voltage was found in a 90s Electronic Engineering 90s. The triac...
Using this circuit a low current switch can be used in the control of heavy duty loads, powered...