This circuit, with a 12 V input, was found in a Popular Electronics from the 1990s. Information is given about the ferrite-wrapped transformer. The transistor must be mounted on a heatsink.
In the figure we have a circuit that allows us to obtain a variable voltage of approximately 0.5 to 25 V...
This interesting circuit, found in a 1997 documentation, allows you to view the characteristic curves of...
This circuit generates a tone whose frequency is set at VR1. The signal is reproduced in a...