1
Ule Louis A: System for detecting and utilizing the maximum available power from solar cells. North American Rockwell Corporation, October 3, 1972: US3696286 (124 worldwide citation)

In a power solar cell array consisting of many solar cells connected to deliver useful electrical power, there is imbedded a smaller reference solar array consisting of solar cells connected in series with a Zener diode and load resistor so devised that the voltage that appears across the load resis ...


2
Farnsworth Robert P, McCaughey Dennis G: Wide band boost regulator power supply. February 8, 1972: US3641422 (114 worldwide citation)

A power supply which, in one embodiment, provides to a load a relatively constant DC (direct current) output voltage at a voltage level equal to or greater than that being supplied from a variable DC voltage source. The power supply includes a first switching circuit controlled by a voltage sensing ...


3
Hawkins George C: Switching regulator sweep starting protection circuit. Motorola, May 15, 1973: US3733540 (82 worldwide citation)

An overload protection system for a switching power supply includes a variable rate and variable pulse duration drive source for operating the switching transistor. Upon turn-on of the power supply, the switching transistor is driven with low repetition rate pulses having a predetermined time durati ...


4
Kasai Yuji, Kano Fumihisa: Maximum power point tracking method and device. Nat Inst Of Advanced Ind Scien, Kasai Yuji, September 11, 2002: EP1239576-A2 (73 worldwide citation)

The output current value of a direct-current power source (1) obtained by low-frequency, minute modulation of the input voltage of a switching converter (2) is detected in a circuit (7b) having an amplification factor switching function that switches the amplification factor between definite magnitu ...


5
Bernardon Derek, Berger Stefan, Labate Francesco, Grillo Sandro: Current sensing circuit. Infineon Technologies, February 2, 2005: EP1503490-A1 (70 worldwide citation)

Current sensing circuit for sensing a current flowing through a power diode comprising: (a) a sense diode (9) matched with said power diode (2), wherein the sense diode (9) comprises an anode portion (9a) and a cathode portion (9b) and delivers a sense diode current (ISD) which is proportional to th ...


6
Gunn John B: High DC to low DC voltage converter. International Business Machines Corporation, January 2, 1973: US3708742 (62 worldwide citation)

Transformerless high DC to low DC voltage conversion is achieved by alternately charging a plurality of capacitors in series from the input voltage source, and discharging them in parallel into the load. The charging and discharging are effected by transistor switches, which are in turn controlled b ...


7
Peters Jr Philip H: Metal base cookware induction heating apparatus having improved power supply and gating control circuit using infra-red temperature sensor and improved induction heating coil arrangement. Environment One Corporation, January 9, 1973: US3710062 (61 worldwide citation)

A metal based cookware induction heating apparatus having an improved power supply and control circuit comprised of a chopper inverter including a gate controlled power thyristor coupled to and supplying an induction heating coil with periodic energization currents. A full wave rectifier supplies re ...


8
Colegate Trevor Roger, Bradford Raymond Ernest: Alternator and static converter system. Marconi Gec, November 22, 1995: GB2289581-A (60 worldwide citation)

An alternator has a three-phase output on lines 2, 3 and 4 applied to a DC - DC boost converter circuit 5 comprising rectifier means 7 and a chopper amplifier which includes transistors 11 and 12. The necessary inductance in the convertor circuit 5 is provided by the self-inductance of the alternato ...


9
Ortiz Joe A, Ullman Joseph H: Quasi-resonant diode drive current source.. Hughes Aircraft Co, October 27, 1993: EP0567280-A2 (57 worldwide citation)

A quasi-resonant diode drive current source provides high power pulsed current that drives light emitting diodes, and the like. The pulsed output current of the quasi-resonant diode drive current source is sensed, and is regulated by a control loop to a level required by the light emitting diodes. I ...


10
Kuwabara Tsuneo: Booster circuit. Kabushiki Kaisha Daini Seikosha, Waters Eric H, July 16, 1974: US3824447 (49 worldwide citation)

A booster circuit is provided which comprises a booster output capacitor and a plurality of capacitors, which are connected in parallel to a booster power supply for being charged when a voltage of a first level is applied to an input terminal of the booster circuit and, on the other hand, connected ...



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