Forward power circuit of multiple tubes connected in series
A power supply circuit and positive excitation technology, which is applied in the direction of electrical components, electric variable adjustment, output power conversion devices, etc., can solve problems such as inability to use other multi-channel closed-loop control, limited input voltage of the circuit, imperfect protection measures, etc., and achieve saving R&D cost and R&D time, the effect of reducing R&D cost, improving the scope of application and the ability of precise control
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[0033] The invention provides a multi-tube series forward power supply circuit, which includes a forward multi-tube series circuit, a transformer main circuit, an MCU main control circuit, a drive circuit, a rectification and freewheeling circuit, and a start-up circuit.
[0034] combine figure 1 , the transformer main circuit mainly includes a transformer T1; including an input coil 1,5, a first output coil 9,10 and a second output coil 12,16. According to actual needs, the number of output coils can be increased to provide more outputs.
[0035] The previous stage of the main circuit of the transformer is a rectification and freewheeling circuit. The rectification and filtering freewheeling circuit is used to rectify the output voltage of the transformer and output it after smoothing and filtering. Freewheeling is to continue to provide energy for a period of time; the rectifying freewheeling circuit mainly includes resistor double-body diodes D1, D2, inductor L1, and capac...
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