Author Topic: Stripping Amp for parts  (Read 489 times)

Crafty

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Re: Stripping Amp for parts
« Reply #15 on: January 04, 2012, 11:43:16 am »
I would never have guessed that it could be so tricky. Why do they not simply print the ratings on the toroidal transformers?
Then in the image that I have posted, why would that amp have 2 toroidals? Can I connect them in serie, or perhaps build 2 power supplies. One for each channel.

One of those toroidal have an additional winding, I guess for powering the front panel lcd. However, If I strip these, I will not use this, since i will not have fancy screens or lights. perhaps a single green LED or something.

I will raid my brothers equipment to start measure these, and help balance my DIY cable set.

Location: Centurion (Gauteng)

LAV

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Re: Stripping Amp for parts
« Reply #16 on: January 04, 2012, 03:40:43 pm »
Those transformers look like they have more or less the same VA rating, so you could ideally use them to have a separate PSU for each channel.
Vaal Triangle (Southern Gauteng)

Crafty

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Re: Stripping Amp for parts
« Reply #17 on: January 04, 2012, 03:49:10 pm »
Those transformers look like they have more or less the same VA rating, so you could ideally use them to have a separate PSU for each channel.
Exactly.
The only difference is the one has an extra green wire coming out of it that runs into the front panel.

So basically maybe build 2 mono blocks into a singe chassis type thing?
Location: Centurion (Gauteng)

LAV

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Re: Stripping Amp for parts
« Reply #18 on: January 04, 2012, 04:04:40 pm »
So basically maybe build 2 mono blocks into a singe chassis type thing?
Yup. I would not try anything in parallel, and you won't gain anything from series connections either, unless you're looking for some seriously high secondary supply voltages.
Vaal Triangle (Southern Gauteng)

Crafty

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Stripping Amp for parts
« Reply #19 on: January 05, 2012, 09:50:02 pm »
ok i measured 2 points on the rectifier, and got 1 reading of 25v, and one of 55 volt.
not sure what that means. will still strip them out and measure again at some stage.
i'm planning on using a set of 2 stk ic's.

is there any reason why i should not do it like that?
Location: Centurion (Gauteng)

Crafty

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Stripping Amp for parts
« Reply #20 on: January 07, 2012, 09:00:53 pm »
ok, the amp is stripped. I measured the output on the main terminals, and they are sitting at 25v each.  guess i can throw them in serie for a 50v psu if i'm going with gain clone.


then the transistors on the heat-sink is D1435.
seeing as i am going for a gain-clone solution, these transistors and the rest of the amp will hit the bin next friday when garbage collection comes around. i will buy new caps, and build my own rectifier.
Location: Centurion (Gauteng)