Suggested by National Semiconductor in documentation from the 90s, this circuit uses a switched regulator of the time. The circuit is suitable for NiCad battery charges.
This 1965 General Electric circuit uses a "Thyrector" that is a suppressor of the time. The...
This circuit allows you to adjust the balance between channels of a stereo amplifier. The circuit...
With this circuit of a Popular Electronics from the 90's it is possible to test a diode with the...