Comments on: Using Clear Schematic Diagram To Troubleshoot Desktop Computer 400W ATX SMPS

By: Mahinda Coomasaru

Mahinda Coomasaru — Tue, 08 Mar 2022 09:46:30 +0000

Good explanation. Thank you so much.

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By: S Karmakar

S Karmakar — Sun, 16 Jan 2022 18:21:44 +0000

Sir, can you share circuit diagram of Frontech 400W SMPS Model no. JIL-2411 ?
Two resistors on primary side, connected with optocoupler EL-817 have burned and I am unable to see their values.

One resistor is connected with pin 3 of EL-817. That pin is also connected with base of transistor C945.

Another resistor is connected with pin 4. There is a zener diode in series on the other side of this resistor.

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By: Imsa Naga

Imsa Naga — Sat, 14 Aug 2021 18:49:59 +0000

Great Tutorial for Hobbyist and Professionals alike...
would it be possible to increase the +12V to 24/36 Volts ?
if possible can you be kind enough to explain with schematics ?
Thank you in anticipation.

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Yogesh Panchal — Mon, 08 Mar 2021 14:12:29 +0000

In reply to Henrique J. G. Ulbrich.

Henrique J. G. Ulbrich

Thanks! for your comment,Shared diagram is just for reference because i didn't found the same circuit diagram.But from this diagram you can easily understand stagewise working of the SMPS.

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By: Yogesh Panchal

Yogesh Panchal — Mon, 08 Mar 2021 14:04:40 +0000

In reply to HECTOR DELATORRE.

HECTOR DELATORRE,
Thanks! for the comment.

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