SMPS Circuit can be used in power amplifiers, the output is symmetrical +- 50volts, voltage can be adjusted with a 10k trimpot connected to a 4n35 opto coupler, of course it should not be set too high or low, for higher voltage the voltage of the output filter capacitors should be increased and the number of secondary windings of the transformer should be increased, for +-75 volts it is said that 2×28 turns.
Power Amplifier SMPS Circuit
SG3525 (pwm control pulse width modulator) was used as control integrated circuit. SG3525 outputs were powered with IR2110 (high speed power MOSFET IGBT drivers) driver and IRFP460 mosfets were driven and ETD49 was used for power transformer. The circuit has a pcb file prepared with PCB Wizard
SG3525 IR2110 SMPS Circuit Diagram
Source: http://www.forosdeelectronica.com/f16/fuente-smps-switching-mode-power-supply-110-220vac-14683/ IR2110 SG3525 smps circuits files alternative link:
Password: 320volt.com
Published: 2010/11/25 Tags: ir2110 circuit, power electronic projects, sg3525 circuit
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