A push/pull-type control signal generating circuit outputs two control signals to control directly and drive switching actions of two electronic switches of a push/pull-type circuit architecture. The push/pull-type control signal generating circuit has a first AND-gate logic unit, a second AND-gate logic unit, a circuit protection unit, a function generator, a clock generator, a soft boot unit connected to the clock generator, a sample and hold unit, a first comparator connected to the soft boot...

Various types of static DC to DC converters are known. Some of these have output rectifiers including phase controlled SCRs. The present invention eliminates the need for controlled output SCRs by pulse width modulation of switching elements in a control circuit controlling the converter circuitry itself. This results in the elimination of some switching devices, higher reliability and higher-efficiency, A unijunction oscillator drives a one-shot multivibrator and a flip flop. The unijunction os...

A rapid response current limiter is used in combination with first and second switching transistors and an output transformer winding connected to provide a power converter. The transistors are alternately switched by first and second square waves supplied to their base terminals, an input d.c. source being connected between a common junction of the switching transistors and a center tap of the transformer winding. Rapid response current limiting is accomplished by limiting the width of the driv...

Circuitry for converting direct current at one voltage level to direct current at another voltage level by the use of alternately fired transistor switches or the like feeding into a transformer, and incorporating flyback transformer means to prevent large current spikes and dissipated energy when the ON times of the transistors overlap, when the transistor switches are driven with pulses of unequal widths, or when the transformer primary turns on either side of a center tap are unequal. The bas...

A transistorized chopper driver and feedback circuit apparatus having separate input and output grounds for providing a regulated D.C. to D.C. power converter apparatus. The chopper driver and feedback circuit utilizes a master square wave oscillator which has a transformer-coupled output to supply both polarities of the same output wave referenced to both grounds. A feedback circuit is utilized to drive the main chopper transistors with a feedback signal derived from the output voltage of the p...

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, ...

Ripple canceling, soft switching isolated DC/DC converters with reduced voltage stress synchronous rectification. The converters include interleaved switching converters providing power to a node supplying power to a zero volt switching bi-phase power conversion stage driving synchronous rectifiers feeding an output filter. In one embodiment, the interleaved converters are boost mode converters operating in continuous conduction mode boost converters. Various embodiments are disclosed.

A DC-to-DC power converter incorporating a combined transformer and inductor device comprised of a three-legged magnetic structure having an air gap in the center leg and primary and secondary windings arranged on the three legs to provide combined cooperative transformer and inductor action.

A regulator circuit is disclosed incorporating a DC capacitor as an energy storage device to be charged to a direct voltage level from an AC source through switch means. The switch means may be semi-conductor switches and because of the direct voltage on the energy storage device, a substantially square wave alternating voltage appears on the switch input. An inductive reactance absorbs the instantaneous voltage differences between the square wave and the alternating voltage input. The switches ...

An inverter for direct current power generation is shown in which both voltage regulation and logical control of the output are achieved by digitally controlling the application of clock signals to the inverter circuit. A standard clock source is used to drive the inverter and digital circuitry, timed from the same clock source, is used to control the gating of clock pulses to the inverter. Entire clock pulses including both positive going and negative going transitions are blocked so as to pres...