Constant current source power supply
A technology of power supply and constant current source, applied in circuits, electrical components, adjusting electrical variables, etc., can solve the problems of poor power supply voltage regulation rate and load regulation rate, power device heating, low power conversion efficiency, etc. Interference, the effect of improving accuracy
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[0021] The structure and working principle of the three-way constant current source power supply are described in detail below in conjunction with the accompanying drawings:
[0022] Power structure:
[0023] like figure 1 As shown, this example provides a three-way constant current source power supply, including a starting circuit 1, a pulse width control circuit 2, a rectification filter voltage sampling circuit 3, a power switch tube 4, a transformer 7, a rectification filter circuit 5 and a linear Regulator 6;
[0024] Wherein, the transformer 7 includes a transformer skeleton 71, primary windings Q1, Q2, three secondary windings and a feedback winding Q3; the transformer skeleton 71 adopts a split-slot winding scheme, and the transformer skeleton 71 is divided into a first groove 72 and three grooves. A second groove 73, the first groove 72 first winds the primary windings Q1 and Q2 of the transformer, after winding, it is isolated by a polytetrafluoroethylene film, and...
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