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Dagnall Electronics
Dagnall Electronics
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Old 2nd February 2013, 08:38 AM   #11
madtecchy is offline madtecchy  England
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Join Date: Dec 2010
Location: wigan
Repanco bartlett administrated and manufacutured in the UK A better company....

Quote:
Originally Posted by Dagnall Electronics View Post
Hello
I would like to take this opportunity to introduce myself and my company. I started in the business working for Drake Transformers, where I completed a full apprenticeship whilst going through collage, before ending up in the design office.

After 11 years, I moved to Dagnall Electronics where I was the engineering manager for 12 years. When Dagnall closed down in 2009, I set up on my own, offering a transformer design service, and I have formed very good relationships with a number of manufacturers.

One of those companies was able to purchase much of the Dagnall manufacturing plant, and employ several of the key manufacturing staff, and together we were able to continue to supply some of the Dagnall customers.

We had Dagnall design, Dagnall materials, Dagnall staff and Dagnall equipment. We were Dagnall in all but name. That all changed a few months ago, when I was able to register the Dagnall Electronics name, and the domain. So we're back, sort of.

I guess a lot of people on here will have heard of Dagnall, and I don't want to pretend to be something we're not. We are not the 50 year old UK transformer company that made transformers in the old dance hall in Cranfield, but we are very close to the 2009 company that administered in the UK and manufactured in Malta.

In the coming months we are planning on producing a standard range of audio transformers, and joining this forum seems a good way of conducting some market research. In return I hope to be able to offer some advice regarding audio transformers.

cheers

Graham
Dagnall Electronics Ltd
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Old 2nd February 2013, 08:41 AM   #12
madtecchy is offline madtecchy  England
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Facebook creates sheep
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Old 2nd February 2013, 07:15 PM   #13
planet10 is offline planet10  Canada
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Dagnall Electronics
Quote:
Originally Posted by tinitus View Post
I would like to know more about your transformers, but its never going to be on facebook, thats for sure
+1

dave
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Old 18th October 2016, 04:51 AM   #14
unicorn is offline unicorn
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Great stuff, I have a Dagnal 100 watt Marshall output transformer and I need to know what the connections are. It is a TXOP-00029 with spade terminal connections at 2,4 and 7 on one side and 9,11,13 and 15 the other.
Also has the numbers D5118 and Batch:1203001F.
I have no other info on what model amp in came from.
Any help would be much appreciated.
Thanks
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Old 19th April 2019, 08:03 AM   #15
Jered is offline Jered  United States
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Location: southern california
Quote:
Originally Posted by unicorn View Post
Great stuff, I have a Dagnal 100 watt Marshall output transformer and I need to know what the connections are. It is a TXOP-00029 with spade terminal connections at 2,4 and 7 on one side and 9,11,13 and 15 the other.
Also has the numbers D5118 and Batch:1203001F.
I have no other info on what model amp in came from.
Any help would be much appreciated.
Thanks
I believe that is an output trans for a marshall jvm410. Im trying to find the specs for it myself. So if anybody can point me in the right direction that would b great. Thank you
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Old 19th April 2019, 11:25 AM   #16
JMFahey is offline JMFahey  Argentina
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Quote:
Originally Posted by Jered View Post
I believe that is an output trans for a marshall jvm410. Im trying to find the specs for it myself. So if anybody can point me in the right direction that would b great. Thank you
Since nobody answered in some 2 1/2 years I wouldnīt hold my breath.

Some suggestions:

1) write Marshall and ask.
As a side path get JVM410 schematic, it might have OT model/code written by it.
And/or compare schematic wiring to what you have, searching for correlation.

2) write Dagnall themselves, *maybe* somebody finds that blueprint or datasheet in their files.
Donīt hold your breath either, for us guitarheads, Dagnall is "the mythical Marshall transformer supplier", for them Marshall is probably one among hundreds of customers and their blueprints must share storage space with thousand others.
What they make very clear in their site , as is the norm with all OEM suppliers,
Quote:
Marshall Amplification Yes, we supply Marshall with their transformers, but we don't supply spares. Please contact Marshall directly.
OEM suppliers have strict exclusivity and "non disclosure" agreements with customers.
That said, out of courtesy they might answer a question about pinout, so far itīs not a "trade secret" ... but they must find the blueprint first ... often not an easy task.

3) post a couple pictures, we might suggest a couple measurements and tests.

In principle I expect 3 wires/terminals for plate and +B connections, 4 terminals fo 0-4-8-16 ohm speaker taps.

I also expect thin (say, 0.25mm or so) high voltage wire and thick (0.8 to 1.2mm) speaker wire so a real closeup macro picture of terminals and wire wrapped and soldered to them will give us a clue.

Modern transformers bring enamelled wire out, wrap it around terminals, and let a large hot soldering iron (think a "hammer" type 100/150W one) first *evaporate* insulation and then actually solder.
Saves a couple minutes burning and scratching enamel off so saves time and cost, and means you can actually see (sometimes even measure with calipers) actual winding wire without major surgery.

So go and do your due diligence homework
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Old 19th April 2019, 12:02 PM   #17
dreamth is offline dreamth  Romania
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Originally Posted by JMFahey View Post
Since nobody answered in some 2 1/2 years I wouldnīt hold my breath.
I'd say 8 years...loos like fake news were invented way before Trump era
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