What is screen tap of transformer?

diyroger · 16th November 2011, 12:21 PM

Hello I'm new to tube. Now I'm planning to build my first tubeamp. The most difficult part of building a tube amp is wiring the transformers. Can any one tell me what is screen tap of a output transformer? I read this in an artical about how to make transformer, but don't have idea about what it is at all.

20to20 · 16th November 2011, 12:34 PM

Search for info on the subject of "Ultra-Linear". The origins are from Acro Products.

toprepairman · 16th November 2011, 12:47 PM

Perhaps something a bit simpler and less potentially (in both senses) lethal might be a wise approach to learning something new.

FullRangeMan · 16th November 2011, 02:29 PM

It is the output of the electrostatic shield to be grounded.

aeandm · 16th November 2011, 02:32 PM

Quote:

Originally Posted by diyroger

Hello I'm new to tube. Now I'm planning to build my first tubeamp. The most difficult part of building a tube amp is wiring the transformers. Can any one tell me what is screen tap of a output transformer? I read this in an artical about how to make transformer, but don't have idea about what it is at all.

Hello, this is difficult .

Only mode is putting power transformer a great distance away .
Axis all transformers 90degree .

atandm

DF96 · 16th November 2011, 03:06 PM

Quote:

It is the output of the electrostatic shield to be grounded.

No. Screen tap is a winding tap for the output valve screen grid, also known as g2.

Wiring the transformers is not the most difficult part of building a valve amp. Proper grounding, for both safety and noise, is probably the part which people most often get wrong. The mains side of the transformer is the most important part to get right, as getting this wrong can have serious life-threatening consequences.

FullRangeMan · 16th November 2011, 03:44 PM

Quote:

Originally Posted by DF96

No. Screen tap is a winding tap for the output valve screen grid, also known as g2.

Wiring the transformers is not the most difficult part of building a valve amp. Proper grounding, for both safety and noise, is probably the part which people most often get wrong. The mains side of the transformer is the most important part to get right, as getting this wrong can have serious life-threatening consequences.

Thanks for informing.

speakerfritz · 16th November 2011, 07:53 PM

to keep things simple...PP output transformers can have 3 primary taps or 5 primary taps. Transformers that only have 3 primary taps are not capable of being used in amps configured for ultra-linear mode unless resistors are used between g1 and g2. transformer with 5 primary taps allow the amp to run in ultra-linear mode by connecting the 40% tap to g2. Not all designs require transformers that can support ultra-linear mode.

aeandm · 16th November 2011, 08:36 PM

Excuse me,I think You speak screening fields around transformers.
On power You make sectional is important for "out power". When You Uanode=1000V+600induction V between coil winding must are electrical strength
or screen. Here isn't simple solutions.

aeandm

payitforwardeddie · 17th November 2011, 09:03 AM

I am surprised that people are not killed attempting this.

16th November 2011, 12:21 PM	#1
diyroger Banned Join Date: Sep 2011 Location: Winston, California	What is screen tap of transformer? Hello I'm new to tube. Now I'm planning to build my first tubeamp. The most difficult part of building a tube amp is wiring the transformers. Can any one tell me what is screen tap of a output transformer? I read this in an artical about how to make transformer, but don't have idea about what it is at all.

16th November 2011, 02:29 PM	#4
FullRangeMan diyAudio Member Join Date: Aug 2009 Location: Brazil	It is the output of the electrostatic shield to be grounded. __________________ >Never go to a psychiatrist, adopt a cat or dog from the streets. On the streets pets live only two years average.

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16th November 2011, 12:34 PM	#2
20to20 diyAudio Member Join Date: Jun 2010 Location: W-S, NC	Search for info on the subject of "Ultra-Linear". The origins are from Acro Products.

16th November 2011, 12:47 PM	#3
toprepairman diyAudio Member Join Date: Nov 2010	Perhaps something a bit simpler and less potentially (in both senses) lethal might be a wise approach to learning something new.

16th November 2011, 07:53 PM	#8
speakerfritz diyAudio Member Join Date: Jul 2008	to keep things simple...PP output transformers can have 3 primary taps or 5 primary taps. Transformers that only have 3 primary taps are not capable of being used in amps configured for ultra-linear mode unless resistors are used between g1 and g2. transformer with 5 primary taps allow the amp to run in ultra-linear mode by connecting the 40% tap to g2. Not all designs require transformers that can support ultra-linear mode.

16th November 2011, 08:36 PM	#9
aeandm diyAudio Member Join Date: Nov 2011	Excuse me,I think You speak screening fields around transformers. On power You make sectional is important for "out power". When You Uanode=1000V+600induction V between coil winding must are electrical strength or screen. Here isn't simple solutions. aeandm

17th November 2011, 09:03 AM	#10
payitforwardeddie diyAudio Member Join Date: Feb 2011 Location: South Wales, UK	I am surprised that people are not killed attempting this.

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