Circuit Schematic High Voltage Converter using LF355 IC

Converter. - Here is Circuit Schematic High Voltage Converter using LF355 IC. Basic of this circuit schematic component is LF355 IC like in figure 1 below. Starting from a 30 volt power supply this high voltage converter circuit can deliver a voltage between 0 to 3 kV (version 1) or from 0 to 10 kV (version 2). IC 4011 gates N1 … N3 are connected as astable multivibrator that commands the Darlington T1/T2 with an rectangular impulse of 20 kHz.

Circuit Schematic

Circuit schematic like in figure 1 above is Circuit Schematic High Voltage Converter using LF355 IC. The transistors cannot be brought to saturation because of the low current that goes through them which will result in a very short block period. The rapid blocking of the transistors will produse an impulse of almost 300 V in the transformer’s T1 primary winding. This voltage is multiplied by the numbers of turns from the secondary winding.

For the first version it uses a monophased rectification. The second one uses a cascade rectifier from an old TV set and it delivers a 3 times higher voltage. Please read more this article from the original article "High Voltage Converter "

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