A DC-to-DC converter of the type the input and output sides are insulated, wherein the circuit for supplying power to control circuit for power converting circuit is simplified. The power supply circuit comprises a reactor having primary winding inserted in series between DC power source and the power converting circuit and secondary winding adapted to take out an energy responsive to rush current into the primary winding, a condenser for storing and supplying the energy to the control circuit, and a means for continuously supplying a partial output from the power converting circuit to the condenser.
A power converter is provided with a pair of auxiliary windings coupled to the primary windings of the output transformer which serve as energy choke windings. An additional pair of choke windings are coupled between the input of the converter to a common terminal of the primary winding. These choke windings prevent excess voltage from appearing across the switching devices of the converter during the turn-off portions of the cycle.
A power supply includes a signal adjustment system to control the rate of turnon and turnoff of the signal output. The power supply comprises a switching type regulator which operates with an initial dead time period in each cycle. The signal adjustment system has a variable rate of signal change to speed up the transition through the dead time periods.
The invention discloses a switching regulator for use in a power supply system for an electric computer. The input from a DC or AC power supply is converted into the high frequency pulses, stepped up or down in voltage and rectified into the DC output to be supplied to a load. The power to be supplied to the load may be varied by changing the pulse duration of the high frequency pulses in response to the difference voltage representing the difference between the voltage across the load and the reference voltage. At starting, the internal circuits are biased with the power supplied from the power supply, but during the operation they are biased with said DC output or the output from the preceeding circuits.
Inverter power supply control circuitry that protects power supply components from relatively quick-changing over-current conditions and that provides regulation of the power supply's output current upon relatively slow-changing load conditions.
A high voltage power supply is formed by three discrete circuits (12, 14, 16) energized by a battery (18) to provide a plurality of concurrent output signals floating at a high output voltage on the order of several tens of kilovolts. Each circuit has a regulator stage (20, 28, 36). In the first two circuits, the regulator stages are pulse width modulated and include adjustable resistances (R1, R2) for varying the duty cycles of pulse trains provided to corresponding oscillator stages while the third regulator stage includes an adjustable resistance (R3) for varying the amplitude of a steady signal provided to a third oscillator stage. In the first circuit, the oscillator (22), formed by a constant current drive network and a tuned resonant network including a step-up transformer (46), is coupled to a second step-up transformer (24) which, in turn, supplies an amplified sinusoidal signal to a parallel pair of complementary poled rectifying, voltage multiplier stages (76, 76') to generate the high output voltage. Each of the other two circuits include oscillator drive stages (30, 38) which, together with isolation transformers (32, 40) provide output signals floating at the high output voltage.
