Hello Everyone.
 
While rooting around in some boxes I discovered a Colworth direct drive DC controller ?
Its a panel mounted unit that i used many years ago.
However I have no idea what the input voltage should be & can't seem to find any information anywhere on the net.
Can anyone shed some light or have any information relating to the unit ?
 
Thanks.
Tony.

Any chance of a photo or two, Tony?

Hi Max.

Here are a few photos.
There is some writing on the back but its long since faded.
It looks like use "something" supply DC ?
When I get a chance I'll try a DC adaptor & see what happens ?


Tony
 

Hi Tony.

Yes.  There is no transformer, so I think that you are right.  No AC house power.

The 2 N 3055 transistor (with its heat sink), is the give away.

If you have a variable output 12 Volt DC power supply available, connect a mulitimeter set to DC Volts to the output, and start with both control knobs set to off and slowly wind them up. 

If you're going to put it into service, a laptop charger as a power supply, is ideal.

They are available on ebay pretty cheap.  For example . . .

https://www.ebay.com.au/i/272310752253?chn=ps

Cheers

Thanks Max.
I'll see what I can do with it later.
Tony.

Dug out a 12 volt Dc adaptor & connected up via the yellow wires.Success it works fine so I guess the controller just takes an uncontrolled 12 volt DC output.
I'll use it on my study test tracks so I won't need to go downstairs every time I want to test a loco.
Here's a photo of my study test tracks.
Dc in front & DCC at the rear.


Tony.

Looks good, Tony.   :thumbs

If you're going to use it on your layout, check that the adaptor can supply at least 1 Amp.

Five would be better.

Cheers

[user=269]MaxSouthOz[/user] wrote:

Looks good, Tony.   :thumbs

If you're going to use it on your layout, check that the adaptor can supply at least 1 Amp.

Five would be better.

Cheers

Its 1 amp Max.
Its only for testing locos on my test track.
Tony.

Excellent!   :cool: