Abstract: A circuit arrangement for limiting turn-on current inrush and current rate of rise in DC-to-DC power converters. A transistor control circuit is disposed between the input DC power source and the transistor oscillator circuit of the converter to provide a ramp of current thereto. The transistor control circuit functions as a time-variable current limiter initially while in the active region and as a saturated switch in the steady-state region. A feedback arrangement allows the saturation drive current to be provided from the converter at a lower voltage level than that which may be required from the DC power source to reduce dissipation and increase efficiency.

Abstract: A high voltage distributor allowing the easy connection and disconnection of a high voltage power supply to and from one or more circuits requiring the supply. The design configuration features unrestrained "pump-out," insulation of the high voltage from ground, and freedom from corona. These features are obtained by mounting a removable retaining rod on one or more insulators, thereby facilitating the support by the retaining rod of a plurality of washers. One of the washers is integrally connected to the high voltage power supply while the remaining washers are integrally connected to the circuits requiring the high voltage.