High-efficiency saturable core voltage converter
Patent 5159540 Issued on October 27, 1992. Estimated Expiration Date: 
March 9, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
March 9, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3551845 Transistor drive control for a multiple input D.C. to D.C. converter Self-oscillating inverter including a DC to DC converter and method for control thereof Patent #: 4519023 InventorApplicationNo. 848608 filed on 03/09/1992US Classes:363/22, Double-ended (i.e., push-pull), self-oscillating type331/112, Blocking oscillator type331/113R, Multivibrator type363/133Double ended (i.e., push-pull) typeExaminersPrimary: Voeltz, Emanuel T.Attorney, Agent or FirmInternational ClassH02M 003/338AbstractA self-oscillating DC to DC voltage converter having improved efficiency. The high efficiency saturable core voltage converter 100 of the present invention provides an output voltage across an output load RL in response to the input voltage at a source node 106 of a voltage source 104. The present invention includes a transistor switching network 120, 122 coupled to the source node 106. The switching network 120, 122 generates an alternating voltage in response to oscillation of the flux within a magnetic core 116. A voltage transformer 110 then impresses an output voltage across an output load RL, thus providing a load current IL. The inventive converter 100 further includes a feedback winding 112 for providing a transistor drive current to the transistor switching network 120, 122. A portion of the transistor drive current is shunted to the source node 106 by a source feedback arrangement 126, 130.Field of SearchDouble-ended (i.e., push-pull), self-oscillating typeWith automatic control of the magnitude of output voltage or current Double-ended (i.e., push-pull), separately-driven type With automatic control of the magnitude of output voltage or current Utilizing pulse-width modulation Double ended (i.e., push-pull) type Blocking oscillator type Multivibrator type | |
