Low-Cost High Voltage Supply

This is very simple Electronic Circuit Project of High voltage supply. A 6 V battery can provide 100-150 Vdc center-tapped at a high internal impedance (not dangerous though it can inflict an unpleasant jolt). A 6.3 V transformer is connected ' 'in reverse'' with a transistor used in a Hartley oscillator configuration. The frequency of operation may be controlled by varying the value of the 10 ohm resistor.

Circuit Diagram:

Low-Cost High Voltage Supply

The 10 µ¥ capacitor must have a working voltage of at least 250 Vdc.

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