Self-excited feedback transforming switching power supply circuit diagram

Published:2011/4/1 3:54:00 Author:Nicole | Keyword: switching power supply | From:SeekIC

The basic principles of ringing choke-type as shown. When coupled with the input voltage, the current from Rg flowing to the base of switch VTl , so VTl conduction, when the diode of the transformer secondary side reverse biased, without current, so the streaming current of VT1 collector current and Np of transformer windings are equal. Because it is starting from zero, so the base current is not able to make VTl conduction. Rg is called the startup resistor.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Power_Supply_Circuit/Switching-Regulator_Circuit/Self_excited_feedback_transforming_switching_power_supply_circuit_diagram.html

Print this Page | Comments | Reading(3)