SMPS circuit diagram for 20 amp 24VDC

Thread Starter

khiljinaz

Joined Apr 4, 2023
3
I need an SMPS circuit diagram to drive a DC motor of 24VDC 20Amp with an input voltage of 100 -240 volts. Consideration be given to commonly available Transistors/ MOSFET and switching controllers.
 

Thread Starter

khiljinaz

Joined Apr 4, 2023
3
SUPPLY 1 You cannot build a supply for what you can buy one.

Is the 20A current for free running, full load, or stall current?
The start up current is very high on motors.
Thank you for sharing Amazon link. 20A is starting current. 4-5 Amp for normal running load. I am sure I can build. Purchasing ready made things is good option but it can't satisfy learning desire for what I joined this platform.
 

Papabravo

Joined Feb 24, 2006
20,378
Thank you for sharing Amazon link. 20A is starting current. 4-5 Amp for normal running load. I am sure I can build. Purchasing ready made things is good option but it can't satisfy learning desire for what I joined this platform.
This is a challenging design which is not really suitable for construction from a generic schematic. It is not the kind of thing that can be built on a breadboard. IMHO it requires you to fabricate a PCB. I don't know of any reliable source for schematics for this kind of thing.
 

LowQCab

Joined Nov 6, 2012
3,451
Here is an appropriate Transformer to start-out with.
A smaller Transformer may work, depending upon the specific application.

Do You need to control the speed ?, or direction of rotation ?
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LowQCab

Joined Nov 6, 2012
3,451
You will also need a stout Bridge-Rectifier to convert the AC to Pulsating-DC Voltage.
And, if the Hum, or Buzzing-Noises are too irritating,
You will also need a big fat ~50-Volt Electrolytic-Capacitor to smooth-out the Voltage pulsations.
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