This circuit, found in a 1958 magazine, is for reference only, since the components are not easy to find today. The transistors are germanium types and power supply is made by common cells.
This circuit uses an MW radio tuned to around 540 kHz to detect atmospheric signals, for example, from...
This circuit is intended to maintain constant current in a heating element. This element must have...
The LMV321 is a low voltage operational amplifier from ON Semiconductor. The following diagram,...