This simple metronome, from 1985 documentation uses only transistors and has two settings. For voltages above 6 V, up to 12 V, replace the BC557 with a BD136.
Despite being a circuit found in an Argentine publication, it seems to us that the original is...
This simple transistor amplifier is from 1982 documentation. The output transistor must be mounted on...
This Cross Fader as it is also known causes the brightness of one lamp to increase while the...