This UHV generator circuit or ultra-high voltage was found in a 90s Electronic Engineering 90s. The triac can be of any type and the voltage depends only on the transformer.
This 1987 signal injector included the power supply from the power grid. The transformer is 6 + 6...
This amplifier was found in a 70s documentation. The product gain x bandwidth is 350 MHz. The...
This simple receiver with junction FET uses a high impedance magnetic earphone (over 2 k). Power...