can anyone identify theses OT markings?

trigger · 11th January 2011, 04:58 AM

i have 2 transformers that were pulled from a large wurlitzer organ (i think maybe lowery?)

one of them is marked;

W.TT
117782
4573

the other;

p1.10
117782
2900

each has one white and one black wire and both look identical in make.

i was just trying to find out some specs on them, and way to test them?

thank you much

aardvarkash10 · 11th January 2011, 05:36 AM

sounds like chokes, not transformers...

trigger · 11th January 2011, 06:31 AM

yeah chokes.

umm excuse my noobness but what is the difference between a choke and output transformer?

aardvarkash10 · 06:44 AM

a choke is a single winding inductor - one wire in, one out.

Typically it is used in a power supply to smooth the ripple in the supply.

A Transformer has two (or more) windings and typically is designed to match the voltage (or impedance) of dissimilar supply and load.

trigger · 11th January 2011, 04:47 PM

thank you for clearing that up, any clue how to test the henrys? on the choke?

Tre' · 11th January 2011, 09:22 PM

How to Measure Inductance

11th January 2011, 04:58 AM	#1
trigger diyAudio Member Join Date: Dec 2009 Location: michigan	can anyone identify theses OT markings? i have 2 transformers that were pulled from a large wurlitzer organ (i think maybe lowery?) one of them is marked; W.TT 117782 4573 the other; p1.10 117782 2900 each has one white and one black wire and both look identical in make. i was just trying to find out some specs on them, and way to test them? thank you much

11th January 2011, 05:36 AM	#2
aardvarkash10 diyAudio Member Join Date: Mar 2007 Location: Auckland, NZ	sounds like chokes, not transformers... __________________ Yes, conservatism thrives on low intelligence and poor information. But the liberals in politics... continue to back off, yielding to the supremacy of the stupid. It's turkeys all the way down. - George Monbiot, guardian.co.uk, 6 Feb 2012

11th January 2011, 06:36 AM	#4
aardvarkash10 diyAudio Member Join Date: Mar 2007 Location: Auckland, NZ	a choke is a single winding inductor - one wire in, one out. Typically it is used in a power supply to smooth the ripple in the supply. A Transformer has two (or more) windings and typically is designed to match the voltage (or impedance) of dissimilar supply and load. __________________ Yes, conservatism thrives on low intelligence and poor information. But the liberals in politics... continue to back off, yielding to the supremacy of the stupid. It's turkeys all the way down. - George Monbiot, guardian.co.uk, 6 Feb 2012 Last edited by aardvarkash10; 11th January 2011 at 06:44 AM.

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11th January 2011, 06:31 AM	#3
trigger diyAudio Member Join Date: Dec 2009 Location: michigan	yeah chokes. umm excuse my noobness but what is the difference between a choke and output transformer?

11th January 2011, 04:47 PM	#5
trigger diyAudio Member Join Date: Dec 2009 Location: michigan	thank you for clearing that up, any clue how to test the henrys? on the choke?

11th January 2011, 09:22 PM	#6
Tre' diyAudio Member Join Date: Feb 2006 Location: Ojai, Ca.	How to Measure Inductance

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