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Garage sale find: pics - what is current and secondary voltage???
Garage sale find: pics - what is current and secondary voltage???
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Old 5th November 2017, 07:39 PM   #1
elguapo511 is offline elguapo511  United States
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Default Garage sale find: pics - what is current and secondary voltage???

Hey all, cool forum.

I Found what I believe is a mono tube amp.

I took it to get fixed and the very smart repairman said the power transformer is dead.

He could not try to fix or replace it without knowing the “ current and secondary voltage” of the power transformer.

So.... how do I figure out the missing info...

The company is called waveforms. And there is little information out there.

I have attached the schematics . Is that info on there?

It also came with some seriously large tubes.

Please help me get smart if you can.

Thanks!

Last edited by elguapo511; 5th November 2017 at 08:28 PM.
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Old 5th November 2017, 07:58 PM   #2
planet10 is offline planet10  Canada
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Garage sale find: pics - what is current and secondary voltage???
Schematic?

dave
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Old 5th November 2017, 08:26 PM   #3
elguapo511 is offline elguapo511  United States
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It came with some great tubes too, I think.

This thing also came with a pre amp that I am looking for...
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Old 5th November 2017, 08:36 PM   #4
kodabmx is offline kodabmx  Canada
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In the second pic under the heading "TRANSFORMER (POWER)" it shows you everything you need to know.
740VCT@150ma, 5V@3A, 6.3V@4A, 6.3V@1A
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Old 5th November 2017, 08:38 PM   #5
cowboy99 is offline cowboy99  United States
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Garage sale find: pics - what is current and secondary voltage???
I just pleaded with new member 'Woops' about lacking of knowledge with tube circuit.
OK Dave, How do you convey the best 'get smart' advice to a someone lacking knowledge of unknown tube circuit ?

Hope your feeling better each day
Charles
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I'm kinda curious about that myself........
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Old 5th November 2017, 08:42 PM   #6
HollowState is offline HollowState  United States
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Quote:
Originally Posted by elguapo511 View Post
I have attached the schematics . Is that info on there?
All the information is on the Sam's parts list. Did your tech not see it? Second picture (transformer power)
Ok, just got beat by kodabmx.
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Last edited by HollowState; 5th November 2017 at 08:44 PM.
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Old 5th November 2017, 08:42 PM   #7
elguapo511 is offline elguapo511  United States
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I thought so...and thanks

But

What is the current and secondary voltage based on the details in the “everything I need to know section”

Every moment can be a brain building moment... is what my infant tells me.
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Old 5th November 2017, 08:43 PM   #8
elguapo511 is offline elguapo511  United States
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I read him that info and it did not seem to help.
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Old 5th November 2017, 08:43 PM   #9
planet10 is offline planet10  Canada
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Garage sale find: pics - what is current and secondary voltage???
Quote:
OK Dave, How do you convey the best 'get smart' advice to a someone lacking knowledge of unknown tube circuit ?
I’m not sure. 700+ Volts on the transformer is into really scary territory, a place where only those well versed in working with high voltage should venture, it is certainly enuff to kill you.

Thanx for asking… i continue to improve. Am now hobbling about with just a cane, 2nd round of physio is over in a month, but i’ll still have a ways to go.

dave
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Old 5th November 2017, 08:58 PM   #10
Ketje is offline Ketje  Belgium
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Quote:
Originally Posted by planet10 View Post
Iím not sure. 700+ Volts on the transformer is into really scary territory, a place where only those well versed in working with high voltage should venture, it is certainly enuff to kill you.
Well, call it two times 370V @ 150mA sounds less scary but the same thing
Mona
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