3 regulated outputs
Q1 startup circuit current
working frequency of converter
UC3845 output driving mosfets
global transient simulation view
Voltages and currents with max load
voltages and currents with low load 1kOhm

Flyback isolated converter 34W output 5V/4A and +-12V/300mA

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SPICE simulation of Flyback DC DC converter, transformer with 3 secondaries, and auxiliary winding for startup circuit. 34W, 3 outputs, 5V and +-12V. PWM with UC3845 in current mode, 40 Khz working frequency.

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