Abstract In a DC-DC converter using an inverter, a series circuit consisting of a primary winding (N 41 ) of a main power source transformer (T 4 ), a first diode (45) and a switching means (2) is connected to a DC power source (1), and the primary winding (N 51 , N 61 ) of a least one auxiliary transformer (T s , Ts) and a second diode (55, 56) correspondent are connected in a parallel with a series circuit consisting of the primary winding (N 41 ) of the main power source transformer (T 4 ) and the first diode (45). Thus, a chopped voltage is applied to a plurality of transformers simultaneously by using a single switching control circuit (3) and a single switching means (2), so that a plurality of DC voltages can be outputted being inslated from each other.
A switching regulator comprising: a power supply means; a switching means; a main power transformer, a primary winding of said main power transformer being connected to said power supply means via said switching means; a switching control circuit for detecting a voltage of one secondary winding of said main power transformer and controlling a duty ratio of said switching means; a first diode inserted in series with and in a forward direction to a primary winding of said main power transformer; at least one subsidiary power transformer, a primary winding of said subsidiary power transformer being connected in parallel with said primary winding of said main power transformer; and a second diode inserted in series with and in a forward direction to a primary winding of said at least one subsidiary power transformer.
Claim 2
Dependent Claim
133 words
A switching regulator comprising: a power supply means; a switching means; a main power transformer, a primary winding of said main power transformer being connected to said power supply means via said switching means; a switching control circuit for detecting a voltage of one secondary winding of said main power transformer and controlling a duty ratio of said switching means; a first diode inserted in series with and in a forward direction to a primary winding of said main power transformer; at least one subsidiary power transformer, a primary winding of said subsidiary power transformer being connected in parallel with said primary winding of said main power transformer; and a second diode inserted in series with and in a forward direction to a primary winding of said at least one subsidiary power transformer.
Claim 3
Dependent Claim
30 words
A switching regulator according to claim 1, wherein said at least one subsidiary power transformer includes a regulating winding connected to said one secondary winding of said main power transformer.
Claim 4
Dependent Claim
18 words
A switching regulator according to claim 1, wherein said switching regulator is used for driving a power device.
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