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| Number | Title | Issue Date |
| 5063489 | Switching regulator having improved switching control arrangement In order to obtain a stable dc output from a switching regulator of a type in which a switching control arrangement is provided with an optical coupler, an A-D converter is arranged to provide the optical coupler with a digital error signal. This error si... | 11/05/1991 |
| 5032967 | SMPS apparatus having a demagnetization circuit A switched mode power supply circuit includes a controllable switch in series with an inductive element between the terminals of a DC input voltage. A control circuit renders the switch alternately conductive and non-conductive. A rectifier for deriving a... | 07/16/1991 |
| 4975820 | Adaptive compensating ramp generator for current-mode DC/DC converters A circuit (20, 40, 50, 60) for generating an optimal compensating ramp voltage signal Vcramp, with the minimum necessary slope, mc for a current mode DC/DC converter is shown. The adaptive compensating ramp generating circuit (20) is... | 12/04/1990 |
| 4891740 | DC power supply with digitally controlled power switch A discontinuous, free-running flyback power supply with precise, predictable switching control is provided. An open collector comparator provides a digital signal to the control switching transistor for precise control of the switching action of the power... | 01/02/1990 |
| 4864480 | Process for operating a switching controller and switching controller functioning according to this process The operating process is based on the existance and cooperation of at least six functional units (64, 65, 66, 67, 68, 70), whereby the functional units (65, 66, 67) have a monitoring and control function. Functional units (64, 68, 70) together form the pa... | 09/05/1989 |
| 4849869 | Switching regulator having a pulse width control system A switching regulator includes a high frequency transformer having a primary and secondary and tertiary windings. It also has a switching element and shunt regulator and photo coupler and control circuit and these elements are arranged for controlling the... | 07/18/1989 |
| 4679132 | Floating battery feed circuit using multifilar transformer A substantial reduction in the common-mode noise generated by a switching-mode power converter is achieved by incorporating a multifilar-wound transformer into the converter in such manner that the inter-winding capacitances cause a cancellation of common... | 07/07/1987 |
| 4612610 | Power supply circuit utilizing transformer winding voltage integration for indirect primary current sensing In a power supply having transformer coupling for regulation of voltage by a pulsing of primary current, a control circuit integrates the output voltage to obtain a measure of flux and primary current. A comparator monitors the integrated voltage to termi... | 09/16/1986 |
| 4562522 | Power supply for an electrostatic air cleaner with a modulated pulse width voltage input having a backup pulse width limiting means A power supply usable with various size loads has an input circuit receiving pulses of voltage at 25 kilohertz. The pulses are modulated in width depending upon the input to a pulse-width modulation IC receiving inputs indicative of the output voltage and... | 12/31/1985 |
| 4489369 | Control circuit for a flyback stepcharger A control circuit for a flyback stepcharger comprising a source producing a urrent proportional to a power supply output in order to charge a capacitor. When the capacitor reaches a predetermined level the charging stops and switching transistors to the pr... | 12/18/1984 |
| 4425612 | Power supply with load-transient anticipation The varying loads to which a power supply is subjected are anticipated before being placed across the power supply output by deriving device selection, direction of load change, and timing data from the control data transmitted to the load. The "on" and "... | 01/10/1984 |
| 4352054 | Method for actuating a switching transistor operating as a setting member in a DC/DC converter A dc/dc converter for controlling the current through a load which comprises a switching transistor having its emitter-collector circuit coupled between an input voltage source and the load. A control transformer having first, second and third electromagn... | 09/28/1982 |
| 4274132 | Power supply arrangements In an arrangement in which a power source is required to supply energy to a load requiring at times more energy than can consistently be drawn from the source: the invention provides 1. A charge control circuit which controls the charging of an energy store ... | 06/16/1981 |
| 4146832 | Constant current series-switching regulator When connected to a source of unregulated DC power, a series switching regulator delivers a constant output current to a load. A series switch, in response to a control signal, adjusts the flow of input power by switching ON and OFF. The switching operati... | 03/27/1979 |
| 4087850 | Power supply circuit In a power supply circuit having a circuit for supplying an input DC voltage through a switching element to a winding, a circuit for producing a desired DC voltage by switching the switching element with a pulse and a circuit for detecting the level of th... | 05/02/1978 |
