Jump to content
Electronics-Lab.com Community

cordless charger redesign 110v to 230v


Recommended Posts

Hi,
I wanted to modify the input power range from 120v to 230V Panasonic cordless phone charger SMPS type, which is currently supporting only 120v AC.
I have opened the charger and tried to find the similarity with Nokia charger(100-230v), but not much information.
It has UTC MJE 13003L - High Voltage Fast-Switching NPN Power Transistor. Also other SMD component 6pin DIP but unable to find #,manufacturere details but it shows LĀBU

Fuse resistor - 10Ω
Input filter capasitor - 4.7μF 200v
Input Inductance - 470mH

Can anybody thro' some light on this.

Thanks in advance,
Mugunth

Link to post
Share on other sites

It's a bad idea because the PCB and transformer creapage and clearances will be designed for 110V and might not be adequate for 240V. It also might create stability problems in the controller IC because the duty cycle will be lower than what it was initially designed for.

The six pin IC is probably an opto isolator.

I don't think there's any need to do this, you can buy cheap small step down transformers to power 120 devices in 230V areas.

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
×
  • Create New...