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Title: I think I'm missing a diode
Post by: Jimmy Kling on May 23, 2009, 08:06:03 PM

Hello,

I'm almost finished with soldering my VEMS box, but I discovered that a transient protection diode is missing. I looked at the schematics and it seams that four pins on the steeper chip, and more, will not get current. Is it suppost to be like that?

Do I need to add a diode and what kind of diode?

Picture belove shows the diode I'm speaking of, in a green square:
(http://i426.photobucket.com/albums/pp344/Jimmy_Kling/http___wwwvems.jpg)

//Jimmy

Title: Re: I think I'm missing a diode
Post by: [email protected] on May 23, 2009, 08:17:02 PM

There's usually a bloody great diode that goes through the hole that's just below the green square in your picture. Which you normally have to solder.
http://www.vems.co.uk/VEMS/ConnectingPower.html

Title: Re: I think I'm missing a diode
Post by: Jimmy Kling on May 23, 2009, 08:28:20 PM

Okey what kind of diode do I need? I have some spare 18V and 30V from the Webshop, can I use one of them?

Title: Re: I think I'm missing a diode
Post by: [email protected] on May 23, 2009, 08:40:58 PM

The one on this unit I have here looks like a 1N6 277A 1.5KE 18A

Title: Re: I think I'm missing a diode
Post by: Jimmy Kling on May 23, 2009, 08:49:44 PM

I looked in my parts box and found one 1N6 277A 1.5KE 18A. Thanks for the help.

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VEMS => Modifications and Repairs => Topic started by: Jimmy Kling on May 23, 2009, 08:06:03 PM