This circuit of the 70's uses transistors of the time. The circuit can amplify signals from 10 Hz to 100 kHz and modern equivalent components can be used. The circuit is from Ferranti.
The gain of this amplifier depends on the component values as well as the operating range and the...
This biestable vox circuit was found in an old documentation. The circuit makes use of components of...
This circuit is from 2001 documentation with the purpose of controlling a pump that fills a water...