High Voltage Power Supply Circuit Diagrams. These currents and voltages are deadly. The next transformerless 0 300v variable power supply circuit diagram can be understood with the following points as can be seen in the figure a high voltage transistor bf458 is used as the main load handling device.
Build this circuit at your own risk. The video below will give a demonstration of this power supply in action and a detailed and in depth explanation on how the circuit functions. It will also complement the instructions in this instructable to make sure that you are able to learn everything about how a zvs high voltage power supply works and how to build one.
Here is the variable high voltage dc power supply circuit which we can customize the output voltage from 0 to 311vdc and it is protected the current over the limit that we define at about 100 ma.
720v at 120ma center tapped for the plate and screen supplies 6 3v at 3 5a for the tube filament and bias power supply and 5v at 3a not used. This type of high frequency high voltage current is used in surgical cauterizers. Dual power regulator 12v 12v using 7812 7912. The power transformer has three secondaries.
