Patent
Floating battery feed circuit
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TLDR
In this article, a floating battery feed circuit (10) comprising a switchingmode, flyback power converter (200) where a capacitor (C3) connected to a converter transformer winding (201) develops a relatively low voltage used to energize the converter control circuitry (100).Abstract:
A floating battery feed circuit (10) comprising a switching-mode, flyback power converter (200) wherein a capacitor (C3) connected to a converter transformer winding (201) develops a relatively low voltage used to energize the converter control circuitry (100). The converter control circuitry prevents the operation of the battery feed circuit unless the voltage developed by the capacitor is above a predetermined magnitude. The power converter advantageously operates in only a constant-power mode regardless of loop impedance.read more
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Power supply having combined forward converter and flyback action for high efficiency conversion from low to high voltage
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References
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Patent
Protection of a switching regulator
TL;DR: A transformer coupled switching regulator power supply having current-limiting circuits and under-voltage detecting circuits on the primary side of the power transformer is discussed in this article, where the undervoltage detection circuit acts to substantially terminate the flow of current through the switching circuits in the case of a short circuit in the load.
Patent
Direct current power converter with start-up and protection circuits
TL;DR: In this paper, a D.C. to DC converter with a choke with a primary winding and a start winding is described, where a portion of the input power is fed through a section of the start winding to the base of a switching transistor connected in series with the primary winding.
Patent
Self start flyback power supply
TL;DR: In this paper, the self-starting circuit of a switching regulator is coupled with an error circuit coupled to the secondary winding to compare the output DC supply voltage to a reference voltage and generate an error signal which is applied through a DC coupling circuit for adjusting the frequency of the generator to existing line and load conditions.
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Rectifier-converter power supply with multi-channel flyback inverter
TL;DR: In this article, the duty cycle of a switching transistor in the flyback inverter section is varied to maintain a constant DC voltage on the auxiliary channel and correspondingly on each output channel.
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Telephone subscriber line circuit
TL;DR: In this paper, a communication line interface circuit including a floating current source supplying a constant current substantially independent of loop length is described, with circuitry for line supervision and the detection of dial pulse signaling.