This isolation circuit for audio signals was found in the August 1992 issue of Radio Electronics magazine. The circuit can be applied to other operational amplifiers.
We found this circuit in a European publication from the 1990s. Transistors are still common types...
This circuit, found in US documentation, can measure the power of transmitters up to 10 W, given...
This circuit with PUT was found in a 1980s documentation. The component used is uncommon and the...