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I finished IR2153 SMPS. I got inspired here. The SMPS is very powerful and reliable. When the 600W amplifier limiting, the voltage still does not drop. That is very good. But when amplifier limiting, the SMPS makes a strange sound. I can't figure out which part is doing it. I recorded the noise...

Hello, does the position and distance of the 2153, transistors and transformer have an effect on functionality?

The wrong schematic mark is used. That confused me. I'm sorry.

Is it verified in practice? Isn't C12 the other way around?

Hi Silvio & Friends, I have IR2153 problems again. When starting without secondary capacitors - everything all right. But the problem with the capacitors. Only 330uF is enough to 2153 crash. Sometimes mosfets too. A soft start will probably be necessary. Please, can I use the circuit from the...

Hello, Please, there will be a functional connection from attached diagram?

What is your opinion on the attachment?

That's not my idea. I found two almost identical designs. First by Silvio: Second from web: https://www.edaboard.com/threads/short-circuit-protection-for-ir2153.365802/ There is an interesting comment Quote Salvu: I experimented a bit and trimmed some resistance values. I'm done with the...

Hello I have a problem with my diy smps. Sometimes a transistor explodes when turned ON. Unfortunately, it also takes circuit 2153 with it. Apparently missing soft start circuit. Runs absolutely reliably when it survives the start. I need to implement a soft start circuit. I found two similar...

Hello friends, I want to repair supply driver, but i can't identify some components. Please help me. I attach schematic. Disputed components marked "?" Thank You

@ Silvio This is input power board: Among other things include softstart. 2s delay relay bridged resistors 40ohm 20W. Fuse to rear panel.

Corrected schematic: Driver IR2153 and current limiter: Provisional current setting: Transformer pinout: Out voltage (LED 20mA + 3k9 resistor): TEST: 6x bulb H3 (12V 55W) serial connection ........ measured 43V 3.9A 4x bulb H3 (12V 55W) serial connection ........ measured...

Hello. I have 2 SMPS +/-24V each. Can I connect in series +/-48V ?

Hello, help me, please. Which Vcc is more suitable? OR Thank you for your help.