Abstract: A high power, high voltage linear field effect transistor amplifier apparatus utilizing an automatic gate biasing network to normalize the gate threshold voltages of a plurality of field effect transistors which are in either series or parallel. Thus, these series or parallel combinations of field effect transistors may be operated as linear devices. A high-voltage, high power, wide-band carrier controlled linear amplifier is provided by utilizing an oscillator as a driver.

Abstract: A dual voltage inductive coil driver is used to rapidly switch between current levels in phase shifters. This approach provides a large voltage swing during the transient period, and then provides a low-dissipation low-voltage source during the steady state condition. The dual mode uses a linear low voltage loop and a nonlinear high voltage loop in the driver. The nonlinear loop may operate from the threshold or difference between either the input reference and coil current or input reference and coil voltage.

Abstract: A high voltage field effect transistor pulse apparatus utilizing majority carrier power field effect transistor in a series configuration to provide a high speed, high voltage output pulse. A fast non-saturating transformer trigger circuit provides a sharp rise time trigger pulse to initiate the high voltage output pulse, while a turn-off circuit provides the off-trigger pulse signal.

Abstract: An apparatus for pulsing a high speed transmitter having pulser delay times in the nanosecond range. The combination of solid state and spark gap devices provide protection against high voltage arcs for both transient and power follow-through conditions.

Abstract: A switching regulator capable of performing open-loop functions. The inhet nature of the circuit provides a constant power translation regulator with short circuit dropout protection. Normal voltage or current regulation may be obtained by utilizing a control winding provided for that purpose. A free-running or locked blocking oscillator circuit in combination with a pulse width controlled switching regulator sustains its own drive and regulation functions. Measured efficiencies from 90 to 99 percent are obtainable with both resistive and line modulator type loads.

Abstract: A voltage regulator for providing a predetermined output voltage from an unregulated voltage input is described where the output voltage is compared with a reference voltage to generate one or more control signals which in turn activate boost regulators which inject voltage onto the output. Each boost regulator utilizes a transformer for injecting the voltage onto the output and a bypass diode across the transformer to permit the input voltage less the diode voltage drop to appear at the output when the boost regulator is not activated.

Abstract: A circuit for selectively variably setting the magnetic remanence in a magnetizable core employs flux circuit feedback, including feedback initiating a self-blocking oscillator type of operation, to achieve designs of two or three (as the designer may desire) elementary sequences (referred to in the art as cycles) to erase previous remanent flux density and to set a new remanent flux density. The circuit apparatus is amenable to constructions using single monolithic integrated circuit chip techniques.