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Post by jezza on Nov 8, 2007 19:29:25 GMT
 I have just modified my X-pre. One of the voltage regulators looked a bit dodgy and I want to change it, however I am unsure of the values to use. The regulators are marked as follows. Reg1 - AN7815 .893(the manufacturers logo is M, surrounded by broken border) & Reg2 - AN7915T .984 Can anyone give me product codes or values to replace both regulators. I will be buying from RS or Maplins. Help much appreciated. Jezza
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Post by Deleted on Nov 8, 2007 20:41:56 GMT
jezza
Just check the voltage regulator area of their site and look for 7815 and 7915.
Same thing, different makes.
SandyK
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Post by clk230 on Nov 8, 2007 20:53:39 GMT
if your just ordering the regulator's maybe worth checking ebay to save on rs postage.
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Post by Deleted on Nov 8, 2007 21:41:41 GMT
Jezza
Do you have any electronic's retailers nearby ? All electronics retailers will stock them.
In Australia they are only around AU$1.20 each !
SandyK
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Post by jezza on Nov 9, 2007 18:14:54 GMT
 Thanks chaps. I have sourced the regulators. The 7815 is 15v / 1amp positive and the 7195 is 15v / 0.5amp negative. Just one more question - I have also modded my X-cans. When I completed the mods on the X-pre I tested it by connecting my X-cans to the X-pre. It sounded better than just having the X-cans connected from X-ray. Has anyone else tried this set up or was I just imagining the difference?
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Post by Deleted on Nov 9, 2007 20:56:53 GMT
"the 7195 is 15v / 0.5amp negative."
Jezza
Typed in a hurry ?The 7915 is -15V 1A.
It is not unusual for this to happen with a good preamp.
SandyK
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Post by jezza on Nov 10, 2007 17:49:33 GMT
Are you sure the AN7915T is -15v 1amp. If you look at us.100y.com.tw/ChanPin.asp?MNo=22437It states the AN7915T is -15v / 0.5Amp Have I got it wrong, I'm no expert in electronics all the mods I have done, I have got the info from rock grotto and just gone for it with my soldering iron. Jezza |
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Post by Deleted on Nov 10, 2007 21:05:19 GMT
jezza
The AN7915 may very well be only rated at .5A The normal 7915 is rated at 1A and is just a
higher power version.(bigger case) There may have been difficulty obtaining the AN7915, whereas the 1A versions are very common. If you are able to obtain the AN7915 , then use it instead to keep the preamp in original state. The normal 7815/7915 would get you out of trouble.
SandyK
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Post by jezza on Nov 10, 2007 22:22:08 GMT
Thanks for your help. Will do just that!
Jezza
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Thanks chaps.