Hi all, I've done a search. I found a similar power supply issue thread from back in 2017. It didn't say at the end what he used and if the supply worked.
So I've just built up hood 1969 amp off eBay, getting back into one of my favourite hobby's, I've got spare time off work.
I didn't realise when ordering the kit, no cables or power leads included.
I've done some looking around and found a few bits that I think would do the trick. Just want to make sure I'm not buying the wrong things.
So audio in has 3 pin holes, ground, left, right. I've looked for a lead to fit this and cannot find anything.
Thinking of wiring up this to the holes as the input.
Now the power supply is the main issue. This will be my first attempt at fitting one, so don't want to blow the amp, or fry myself.
The 2 I've found look to be the correct type. I just need a to find an enclosure to case it in along with the amp .
Any advice would be a big help. Thanks.
So I've just built up hood 1969 amp off eBay, getting back into one of my favourite hobby's, I've got spare time off work.
I didn't realise when ordering the kit, no cables or power leads included.
I've done some looking around and found a few bits that I think would do the trick. Just want to make sure I'm not buying the wrong things.
So audio in has 3 pin holes, ground, left, right. I've looked for a lead to fit this and cannot find anything.
Thinking of wiring up this to the holes as the input.
Now the power supply is the main issue. This will be my first attempt at fitting one, so don't want to blow the amp, or fry myself.
The 2 I've found look to be the correct type. I just need a to find an enclosure to case it in along with the amp .
Any advice would be a big help. Thanks.
You will need a 240v transformer with a power of 20w or more with two 12v windings (12-0-12).
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The 15-0-15v is a lot harder to find, I'm struggling to find similar ones as the ones I've got above. DIY old laptop PSUs seem to be what are being used.
https://www.ebay.co.uk/itm/11577858...FXxfZg1jixWwll9IQK0NPVn1H7|tkp:Bk9SR5SF-cv3YQ
The values are not bang on, but this seems to be the closest I could find.
The values are not bang on, but this seems to be the closest I could find.
Here you go: - ISO9001 top quality UK product from Airlink: https://airlinktransformers.com/pro...toroidal-transformer-standard-range-cm0050215
A caveat: Use JLH's tables 1 and 3 in the WW article to make sure your voltages and current ratings will suit all the likely speakers and power requirements you want to use. 50VA is quite small for stereo with 3-4R speakers. A somewhat larger transformer is good insurance. It will run cooler and its output voltages won't sag so much. http://www.sound-au.com/tcaas/jlh1969.pdf
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I've just been reading up on these transformers, the amount of turns and how to calc the voltage based on these. My plan is to build a power supply to run my DIY eBay bought amps, all require AC inputs. I've been mostly reading headphone amp PCB layouts, and design. Building up cmoy amps and doing the calculations on these before moving on to trying to read/ understand bigger amps. So grabbing a few cheap ones I need to solder together, with circuit layouts to learn off. Now I'm going to do this transformer to power said amps, and help me learn as I go.
