This sample and hold circuit is from a 1969’s documentation. However, it can be built with modern equivalent components, including the matched pair of transistors.
Depending on the transformer used, the power of this inverter can reach 300 W. This is a critical...
This circuit from an old American publication uses a 12 V transformer and an incandescent lamp in an...
This circuit with an unusual configuration was found in the January 1974 issue of Radio...