# Mobile Charger to get +5v, 0 , -5v ?

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#### aljamri

##### Member
Hi,

Since it is an old thread, I’ve decided not to post in that and start my own one.
In post #7 of this Thread , BADFLOPPY said that the Mobile Charger can be turned into +5, 0, -5 Volts supply as he said :”Just connect a reverse diode from the output of the transformer with the same capacitor and you get a twin polarity +5, 0, -5 volt”.

My question is : Which transformer he meant?

##### Well-Known Member
This was the post:

Ron

#### aljamri

##### Member
Hi Ron,

https://www.electro-tech-online.com/custompdfs/2011/07/800-0627PDF.pdf

That’s nice, I'll try to contact them and conceder their product as replacement for some of our equipment, taking in mind that they give 2 in 1, 2v and 24v supply and offer 10 years warranty.

But as I told you, I'm trying to do simple SMPS to enter the world of troubleshooting. Nowadays instruments, most of them use SMPS, and when it went wrong, thousands of USD is thrown away.

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