Source for desklamp transformer

Beebad · Mar 28, 2021

hi, this is my first post.
I doing a simple repair of my wife’s favorite 50w halogen (50w, 30w), desklamp.
I think the transformer died.

it is a 120v to 12v and spits out 50w or 30w current by way of a toggle switch.

no current out of the dc end, might as well replace it. Easier said.

what is a good source in US for a small transformer like this? All that comes up is alibabba. I guess it is chinese afterall.
e1-66-as2-9967 : 12v 50w-30w

telectrix · Mar 28, 2021

Amazon.com : 120v to 12v transformer

Beebad · Mar 28, 2021

Thanks.
I am looking for a near replacement part.
120v input
12v 50w or 30w output

static zap · Mar 29, 2021

Important question , is it extendable .
With bare telescopic metal .
( How mine died ..conductive metal bridged -the 2 bare parts ! )

Timbo · Mar 29, 2021

@Megawatt knight in shining armour, share your knowledge! ?

Lucien Nunes · Mar 29, 2021

This is an application-specific type of transformer. It has only one secondary winding, but the output voltage can be selected by a tap in the primary. I am not sure I have ever seen exactly that arrangement in a transformer on general sale, it was probably made for the lighting manufacturer and if they are no longer around, you might have to cannibalise another fixture to get a drop-in replacement.

If you don't use the 30W tapping, you could use a straightforward 12V 50W transformer either wirewound or electronic. For variable output, you could use a dimmable electronic transformer with an inline dimmer in the cord. So there are ways to achieve the same result by different means.

Beebad · Mar 29, 2021

i wrote the taiwanese company still around...will see if they can respond.

Megawatt · Mar 31, 2021

Beebad said:
hi, this is my first post.
I doing a simple repair of my wife’s favorite 50w halogen (50w, 30w), desklamp.
I think the transformer died.

it is a 120v to 12v and spits out 50w or 30w current by way of a toggle switch.

no current out of the dc end, might as well replace it. Easier said.

what is a good source in US for a small transformer like this? All that comes up is alibabba. I guess it is chinese afterall.
e1-66-as2-9967 : 12v 50w-30w

Go to your local electrical parts house or go to Lowe’s or Home Depot. It’s a simple transformer 120vac to 12vac

Beebad · Mar 31, 2021

Megawatt said:
Go to your local electrical parts house or go to Lowe’s or Home Depot. It’s a simple transformer 120vac to 12vac

Well, no it is not a simple transformer. 120v comes in, 12v comes out In either 50w or 30w determined by the 3-position toggle that I did not show: [left 30w-center OFF-right-50w] . Thank you for responding.

static zap · Mar 31, 2021

The different wattages will be different voltages . 30W under run= long life
( had a variable electric blanket one once ).. ran a 12V Disco light with it !