[Techlunch] Line speaker transformer

techlunch at happy.emu.id.au techlunch at happy.emu.id.au
Thu Aug 27 10:22:51 EST 2015


Good morning,

Interesting, I once had something like 400kgs of various old & new transformers however most have now gone to recyclers.

 As I am on leave/on the road for the next 3 weeks I won't be at lunch. Lightning Ridge, Bourke, down the Darling to Menindee, Mungo NP, 3 days on the Murray-house boat, maybe the little or Big Dessert also.
Cheers
Alex.



-----Original Message-----
From: techlunch-bounces at happy.emu.id.au [mailto:techlunch-bounces at happy.emu.id.au] On Behalf Of techlunch at happy.emu.id.au
Sent: Wednesday, 26 August 2015 11:38 PM
To: techlunch at happy.emu.id.au
Subject: Re: [Techlunch] Line speaker transformer

Rob, Neil, Amanda,

Thanks for looking all this up.  It looks like they are definitely mains
transformers.
I think I may have picked them up out of a clearance box many (more than
10 ) years ago and always thought they were line transformers !!

So now what am I going to do with them??

By the way, does anyone know when Gilbert gets home? I've got a couple
of packets of drills here for him, and they're getting boring.

cheers
Bill


On 26/08/2015 9:55 AM, techlunch at happy.emu.id.au wrote:
> Bill,
> M2480 sounds like a mains transformer.
> 100V line transformer are usually pair of wires on The low Z (8ohms)
> On the primary three spade terminals marked c  common, 5k/2.5W, 2.5k/5.0W typical.
> I have only seen wires on both sides of 100V line transformers for high power transformers 30W
> Plus.
> Cheers,
> Amanda
>
> Sent from my iPad
>
>> On 25 Aug 2015, at 9:38 pm, techlunch at happy.emu.id.au wrote:
>>
>> Dear gentle folk,
>>
>> Does anyone have an old (real old) Dick Smith catalogue? You know, the ones that used to have real information in them!!
>>
>> I have a couple of transformers, which I'm pretty sure are 70V/ 100V / 8Ω.  The stock item number is M-2480.
>> The 8Ω side is obvious, but there are 3 wires on the HV side, so not sure exactly how its configured!!
>>
>> cheers
>> Bill
>>
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