You don't connect it directly like that! The output is still AC. The T-Amp need a DC power supply therefore you need to convert the AC to DC.
Normally we use (four) diodes for this or a bridge rectifier for this purposes. Then a smoothing capacitor is connected to 'smoothen' the DC which still have 'ripples' in it. This is a basic/raw unregulated rectifier circuit. A better one would be a regulated power supply which will employ either transistors or dedicated voltage regulator IC made for this purpose!
Too much to handle?

I paid about 1/2 of that.

This post has been edited by jazzy939: Aug 24 2008, 09:02 PM

More screen shot. some stuff already prepared. Hi sifu anything still leave?

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Added on August 24, 2008, 9:05 pmHi jazzy939 do you have any picture to show it to me. How the AC to DC convertor look like.

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Added on August 24, 2008, 9:11 pmHi jazzy939. you only paid half ah. I ask the sales girls to give me some discount she also don't give.

This post has been edited by mysghooi: Aug 24 2008, 09:11 PM


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Whoa.. you bought almost 'everything'

How much did you pay for the casing?

I guess I got lucky to get it 'cheaper'.. should have bought a few for 'spares'..

Here's one of a small voltage regulator kit that I have for a 'spare'. This is single voltage, 9V regulator if I am no mistaken.



This post has been edited by jazzy939: Aug 24 2008, 09:16 PM


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hi jazzy939 you mean I need to get the voltage regulator kit? Is this kit call the bridge retifier?

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Added on August 24, 2008, 9:18 pmHow much to you get it?

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Added on August 24, 2008, 9:22 pmI paid RM20 for the casing? Is this expensive?

This post has been edited by mysghooi: Aug 24 2008, 09:22 PM

You either buy a kit or make one yourself! Buying a kit is simpler..
No, a bridge rectifier is one of the components. See the 4 diodes on the kit board? That can be replaced by a bridge rectifier.. depends on kits and circuit design... expensive ones will be using bridge rectifiers.. diodes are cheap(er) alternative..
We use 4 diodes or bridge rectifier(same equivalent) for a FULL WAVE rectifier.. do a google..

Bridge rectifiers can be in these forms:
Schematic included.





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mysghooi...you really really want to build this t-amp....and you really berani get all this stuff for the project......


jazzy...i got a new 'toy' coming up waiting to arrive next week. a big bargain i guess for my next 'small small' project....

mysghooi,
RM20? Whoa got some more? I think it's reasonable!
Looks like it's made of aluminium alloy and some steel plates. Either anodized black or painted black.. Where did you get it?

gabanyayaya,
'toy'? oh really? surprise me then!

Yup I think I will make it simple to buying a kit. Is there any 12v voltage regulator kit?

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Added on August 24, 2008, 9:34 pmHi gabayaya, at start I think it is simple. But now I need some sifu here to guild me.

This post has been edited by mysghooi: Aug 24 2008, 09:34 PM

wait a while.....i'll post a picture in our pm....hehehe

question: does GC too needs DC power supply?

I think that shop still got one more. At the time I buy it got two. and some other casing a bit smaller. and there is one casing very big. like those car amp.

That tranny secondary side is single winding with center tap. Its not dual output. Dual output will have TWO secondary windings, which one end of each winding can be tied for center tap and proceed with full wave rectification. Two windings with same voltage can be connected in parallel to increase the current output, and a center tap will not exist in this case.

This post has been edited by bsl555: Aug 24 2008, 09:38 PM

Of course there is! There are fixed 12V one or variable, eg 0-30 volts are usually available.
I bought a variable one so that I can turn it into a bench PSU and have all the voltages up to 30VDC!
Picture shows the front panel of my bench PSU that I am using to power the T-Amp at 12.6VDC..






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Oops! Its a center tap.. silly me!
Yes, can increase current when connected in parallel.
Thanks for the correction bsl!

hi bsl555 is this mean I need to connect all three pin to the bridge retifier?

NO.. only two. But you can 'parallel' the other connection to increase the current. This is what bsl meant.
I think this is confusing you ler... hahaha

There are only two AC connections to the bridge rectifier. The balance two is the full wave DC output voltage.

Oh, I get it jazzy939. For the casing I get it in Ipoh.

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Added on August 24, 2008, 10:00 pmHi jazzy939 the picture of the bridge retifier(post 383). show AC/DC Sub??? not very clear. Can you complete it for me.

This post has been edited by mysghooi: Aug 24 2008, 10:00 PM

Ipoh huh? Hmmm don't see them here in Jalan Pasar..

Heyy.. its just the way they name the kit/board. Its AC/DC SUPPLY.
And its a 'low' voltage/current supply.. you can see that from the 'small' 1000uF capacitor...

Hi jazzy939, you mean bigger uF capacitor will be better?

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Added on August 24, 2008, 10:07 pmOh AC/DC supply. How much it cost you?

This post has been edited by mysghooi: Aug 24 2008, 10:07 PM

Normally, the bigger the smoothening capacitor, the better!

But it'll get more expensive lah!

I think that board costs me RM10.. but it's a 9V regulator, k. NOT 12 V.

Ok, I find the 12V board. Don't know whether here got or not.