diysmps

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Calculation programs for transformers and inductors

Raza 12-22-2019 11:26 PM

smps flyback controller ic

I am a nub is smps and just completed my first breadboard isolated smps with 24 volt input. I used the SG6848D controller from Ebay. Anyone has any suggestions for a better IC.
Just some details...
d52perry 12-15-2019 06:34 AM

Current Transfromer T1 Design

Does anyone know the picture of the transformers windings design?
Thanks
Faker 11-28-2019 03:18 PM

Current Transfromer T1 Design

Does anyone know the picture of the transformers wingdings design?
Thanks
Faker 11-28-2019 03:17 PM

Current Transfromer Design T2

Does anyone know the picture of the transformers wingdings design?
Thanks
Faker 11-28-2019 03:17 PM

Recent Forum Posts

Need ATX SMPS schematic use 311 for 5V STB

Try to change the control chip or mosfet/transistor controlling it. Check for broken winding in the transformer primary. Check also for faulty capacitors
Silvio Yesterday, 09:02 AM

Need ATX SMPS schematic use 311 for 5V STB

Hi ,All
pls help about ATX SMPS ,no standby voltage, it's use 311 in that loop.
THX.
teetat Yesterday, 04:37 AM

Modifying +/- output voltage on triple output SMPS

I am not sure if your modification will make it work the way you think, it is normal to get the higher voltage when adjusting those resistors, this happens
MicrosiM 02-16-2020, 10:30 AM

Need help for opto driver

IR2110 is a robust chip if used properly with the proper PCB layout, and can easily drive 4 IGBTs without any issues.

Using those optos also
MicrosiM 02-16-2020, 10:21 AM

Need help for opto driver

@ mihaiu16

I have seen the datasheets of the opto drivers and transistors. The output current of the optocouplers are a little bit on
Silvio 02-15-2020, 08:58 AM

Need help for opto driver

Hi Silvio!
I know all the tread I looked with interest and I read the discussion and advice that you, microsim or ludo gave. There it's very precios
mihaiu16 02-14-2020, 06:31 PM

Need help for opto driver

You can follow the tread of LUDO 3232 for the 1000w smps using an ETD49 transformer. You can find everything you need including the pcb in pdf and also
Silvio 02-13-2020, 07:32 PM

Need help for opto driver

Hello everyone,
I'm new in this domain and I want to make a smps with optocoupler driver. i need your support for this project.
In the
mihaiu16 02-12-2020, 04:10 PM

Modifying +/- output voltage on triple output SMPS

Update:
I changed out one of the resistors in the reference divider and removed a 5.1V zener that was hanging off the opto for overvoltage protection
azone 01-30-2020, 07:50 PM

Modifying +/- output voltage on triple output SMPS

I have a Meanwell RPT-75 with +5/+15V/-15V outputs.
I'm trying to increase the +/-15V outputs to +/-17V.
You can see in the block diagram
azone 01-30-2020, 06:51 PM
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Need help for opto driver
Thread Starter: mihaiu16
Hello everyone, I'm new in this domain and I want to make a smps with optocoupler driver. i need your support for this project. In the past I...
Last Post By: MicrosiM 02-16-2020, 10:21 AM

Modifying +/- output voltage on triple output SMPS
Thread Starter: azone
I have a Meanwell RPT-75 with +5/+15V/-15V outputs. I'm trying to increase the +/-15V outputs to +/-17V. You can see in the block diagram attached...
Last Post By: MicrosiM 02-16-2020, 10:30 AM

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