Importance

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Abstract

Improvement for power supplies include a protection circuit having a first L-C filter network, a second L-C filter network and a voltage clamping device such as a zener diode which is disposed between the two L-C filter networks. The protection circuit reduces the magnitude of overvoltage input transients which might otherwise damage the internal components of the inverter. For generating very high output voltages, the power supply includes a high voltage transformer and a Crockoft-Walton voltage multiplier coupled thereto. The high voltage transformer is coupled to an inverter through a coupling circuit which includes a capacitor in one leg of the primary winding and a parallel connected resistor/inductor in the other leg of the primary winding of the high voltage transformer. The high voltage transformer is formed of a multi-sectioned bobbin which is defined around an axially extending core. A first insulating tape formed of a material having good insulation resistance and a relatively low dielectric constant is wound in the channel and the secondary winding is then wound around the insulation, substantially filling the bobbin. Thereafter a second similar insulation is wound around the secondary winding and the primary winding is wound over the second insulation.

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First Claim