Sunday, April 29, 2018

SMPS Power Amplifier using 2 Mosfet Transistor

This is power supply circuit using the power amplifier, like before schematic circuit SMPS Gacun here: 10A 70V SMPS for Power Amplifier there are using 1 Mosfet N Channel. This power supply circuit is suitable for power amplifier circuit with big power, can be used for a power amplifier with 1000Watt or more power. The maximum voltage that can be set up is 75V with maximum ampere can reach 25Ampere. By using 2 mosfet Gacun SMPS can add their output power and also stronger for all types of amplifiers. Below for the circuit scheme:
SMPS Power Amplifier using 2 Mosfet Transistor
Component List:
R4= 22R
R5= 1K5
R6= 39K
R7= 3K9
R8= 1K
R9= 820R
R10= 220K
R11= 0,1R - 0,22R 5W
R12= 5K6
R13= 220K 2W
C1= 100N 275V
C2= 220uF 400V
C3, C4, C8= 10N
C5, C6= 1uF 50V
C7= 2N2
C9= 22N
C10= 10uF 50V
C11= 47uF 50V
C12= 1N 400V
C13, C14, C15, C16= 1000uF 100V
D1,D4= Zener 9V1
D2, D3, D5, D6= 1N4148
D7= Zener 12V 500mW
D8, D9= MUR8060
BR1= Diode Bridge KBU4M
TR1= EMI Filter from TV PSU Circuit
TR2= Gacun Trafo MK201609
TR3= Primary Winding: 45Turns 0,6mm , Secondary Winding: 14Turns CT 14Turns 0,8mm. Core transformer using former tv power supply.
IC1= UC3843
Q1= IRFP460, K3911
Q2= IRFP460, K3911

For PCB Layout you can see below, or you can download it in the form of a file (PDF) at the end of the post:
PCB Layout SMPS Gacun

Finished PCB SMPS Gacun 25A 2 Mosfet N-CHANNEL:

The transformer that you can use for this SMPS Circuit, see video below:


Electronic Circuit is a good site for hobbyist also who would like to try DIY because it shared good circuits. If you have a personalized circuit requirement you may feel free to request it through the comment box or contact me.


Sir ,I'm from India. MUR8060 is not available here. Which diode I can use instead of MUR8060?

sir , is it ETD-34 transformer ???

Please give number of turns and diameter of TR3 Pin 3,4 winding and 5,6 winding.

Specification of Gacun Trafo MK201609

hi sir
i cant find the gacun trafo can i wind it my self?
what etd core should be used for max performans?

Brother pls upload this amps 75/0/75 25A video pls