The circuit in the figure is an amplifier with gain 10 for alternating signals using the 741. The circuit is from an article in the Radio Electroics magazine of May 1989.
This 1965 Philips circuit uses old company transistors like the BFY51 and BFY50. The circuit is...
This circuit is from 1991 but can be assembled with a 2N2646 unijunction transistor. When turned on,...
We found this circuit in a 1998 documentation. It tests common household appliances to see if they...