Pictures of your diy Pass amplifier - Page 172

NSP · 8th March 2013, 06:12 PM

Someone made me drink too much beer tonight. 18+18 volts is what I ment.

As we say in Finland "Kippis"

WalterW · 8th March 2013, 06:12 PM

Looks great, that's gonna be a fine case when finished. How on earth do you make you're own transformer casing?
BTW: the transformer looks a bit small for 2 x 18V, 600VA, or is it just the picture?

NSP · 8th March 2013, 06:30 PM

Thanks Walter!

The transformer is about 150 mm in diameter, 40 mm high and weighs about 5 kilos. I ordered it from Toroidy so I hope it's the real deal.

The transformer casing is made out of 3 mm thick sheet metal that i rolled and TIG- welded together. Then a 3 mm lid was silver soldered on and trimmed down to right diameter in a lathe. Quite easy made, but I hope the inside of the amp will be more "clean" looking.

Here are some pics of the casing.

massimo · 8th March 2013, 06:45 PM

Quote:

Originally Posted by NSP

Quite easy made....

Maybe for you, not for us without the right tools...

Nice work nonetheless

NSP · 8th March 2013, 07:00 PM

Quote:

Originally Posted by massimo

Maybe for you, not for us without the right tools...

Nice work nonetheless

Thing is that I don't own any tools that can do that, I just happen to work at a place that got the right tools and machinery that I sometimes use for my own hobbies.

Thank you!

WalterW · 8th March 2013, 07:07 PM

If it weighs 5 kg it's 600 VA !

NSP · 8th March 2013, 09:53 PM

I thought so. It's big and heavy!

Zen Mod · 8th March 2013, 10:04 PM

I just hope you're not going to drill a hole in center of it ........ and to put common screw , for both toroid and cover

( we already had few examples , needing 3 pages of explanation to builder , that he is having short circ messing with precious toroid , while he wasn't prepared to believe that we aren't pulling his leg ; one of most interesting cases was with guy - having two toroids , with short circ common for both of them , and - luckily - just fact that they were antiphase connected on common mains cable , saved it from fire or something like that )

NSP · 8th March 2013, 10:10 PM

Zen Mod- Put a common screw through the transformer and casing is exactly what I'm going to do because the transformer that I ordered has a epoxy filled center and no metal in sight.

coils · 9th March 2013, 12:27 AM

Quote:

Originally Posted by NSP

Zen Mod- Put a common screw through the transformer and casing is exactly what I'm going to do because the transformer that I ordered has a epoxy filled center and no metal in sight.

Use a nylon screw, prevent the shorted turn.

8th March 2013, 10:04 PM	#1718
Zen Mod diyAudio Member Join Date: Jan 2003 Location: ancient Batsch , behind Iron Curtain	I just hope you're not going to drill a hole in center of it ........ and to put common screw , for both toroid and cover ( we already had few examples , needing 3 pages of explanation to builder , that he is having short circ messing with precious toroid , while he wasn't prepared to believe that we aren't pulling his leg ; one of most interesting cases was with guy - having two toroids , with short circ common for both of them , and - luckily - just fact that they were antiphase connected on common mains cable , saved it from fire or something like that ) __________________ my Papa is smarter than your Nelson ! tnx to clean thread ; Cook Book ; PSM LS Cook Book ; Baby Diyaudio FORUM ; Mighty ZM's Bloggg;I'm dumb

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8th March 2013, 06:12 PM	#1711
NSP diyAudio Member Join Date: Nov 2007 Location: Vasa	Someone made me drink too much beer tonight. 18+18 volts is what I ment. As we say in Finland "Kippis"

8th March 2013, 06:12 PM	#1712
WalterW diyAudio Member Join Date: Oct 2012 Location: Utrecht	Looks great, that's gonna be a fine case when finished. How on earth do you make you're own transformer casing? BTW: the transformer looks a bit small for 2 x 18V, 600VA, or is it just the picture?

8th March 2013, 06:30 PM	#1713
NSP diyAudio Member Join Date: Nov 2007 Location: Vasa	Thanks Walter! The transformer is about 150 mm in diameter, 40 mm high and weighs about 5 kilos. I ordered it from Toroidy so I hope it's the real deal. The transformer casing is made out of 3 mm thick sheet metal that i rolled and TIG- welded together. Then a 3 mm lid was silver soldered on and trimmed down to right diameter in a lathe. Quite easy made, but I hope the inside of the amp will be more "clean" looking. Here are some pics of the casing.

8th March 2013, 07:07 PM	#1716
WalterW diyAudio Member Join Date: Oct 2012 Location: Utrecht	If it weighs 5 kg it's 600 VA !

8th March 2013, 09:53 PM	#1717
NSP diyAudio Member Join Date: Nov 2007 Location: Vasa	I thought so. It's big and heavy!

8th March 2013, 10:10 PM	#1719
NSP diyAudio Member Join Date: Nov 2007 Location: Vasa	Zen Mod- Put a common screw through the transformer and casing is exactly what I'm going to do because the transformer that I ordered has a epoxy filled center and no metal in sight.