ERG DC-DC converters - UK Vintage Radio Repair and Restoration Discussion Forum

alanjam · 23rd Sep 2023, 10:43 am

I have a couple of what appear to be DC-DC converters labelled as PMV2-2C-12V-43R with the date? number 7914 underneath. I'd like to know the input and output voltages and the pin-out. Probably 12V out?
Anyone got a datasheet on these?
Alan

factory · 23rd Sep 2023, 1:29 pm

Looks more like a reed relay to me, 12V 430ohm coil, DPDT contacts, you should be able to figure out which pins are the coil.

David

alanjam · 23rd Sep 2023, 6:48 pm

Thanks for the response David. I hadn't thought of relay but a quick check with the multimeter didn't find anything like a coil resistance. And you are correct - it's PMV2-2C-12V-430R not 43R as I listed.
ERG are a company which makes DC-DC converters and some in their catalogue look very like what I have. Unfortunately I can't find an old enough catalogue.

factory · 23rd Sep 2023, 8:08 pm

The ERG (Endicott Research Group) that makes inverters & DC DC converters is an US company. https://ergpower.com/

ERG components was a UK company making switches & relays, they became part of ITW.
https://web.archive.org/web/19980215...uk/summary.htm

Your component is definitely a relay, if you can't find the coil, it's probably open circuit.

A recent thread for another type of ERG reed relay here; https://www.vintage-radio.net/forum/...d.php?t=202789

David

alanjam · 3rd Oct 2023, 9:54 pm

You are indeed correct David - they are relays. I managed to find the 430 ohm winding on one of them and thus soon found two sets of contacts.
Thanks for solving this little puzzle for me.
Alan

23rd Sep 2023, 10:43 am	#1
alanjam Triode Join Date: Dec 2015 Location: Crawley, West Sussex, UK. Posts: 34	ERG DC-DC converters I have a couple of what appear to be DC-DC converters labelled as PMV2-2C-12V-43R with the date? number 7914 underneath. I'd like to know the input and output voltages and the pin-out. Probably 12V out? Anyone got a datasheet on these? Alan Attached Thumbnails

23rd Sep 2023, 1:29 pm	#2
factory Octode Join Date: Jul 2009 Location: Cheshire, UK. Posts: 1,535	Re: ERG DC-DC converters Looks more like a reed relay to me, 12V 430ohm coil, DPDT contacts, you should be able to figure out which pins are the coil. David

23rd Sep 2023, 6:48 pm	#3
alanjam Triode Join Date: Dec 2015 Location: Crawley, West Sussex, UK. Posts: 34	Re: ERG DC-DC converters Thanks for the response David. I hadn't thought of relay but a quick check with the multimeter didn't find anything like a coil resistance. And you are correct - it's PMV2-2C-12V-430R not 43R as I listed. ERG are a company which makes DC-DC converters and some in their catalogue look very like what I have. Unfortunately I can't find an old enough catalogue.

23rd Sep 2023, 8:08 pm	#4
factory Octode Join Date: Jul 2009 Location: Cheshire, UK. Posts: 1,535	Re: ERG DC-DC converters The ERG (Endicott Research Group) that makes inverters & DC DC converters is an US company. https://ergpower.com/ ERG components was a UK company making switches & relays, they became part of ITW. https://web.archive.org/web/19980215...uk/summary.htm Your component is definitely a relay, if you can't find the coil, it's probably open circuit. A recent thread for another type of ERG reed relay here; https://www.vintage-radio.net/forum/...d.php?t=202789 David Last edited by factory; 23rd Sep 2023 at 8:18 pm.

3rd Oct 2023, 9:54 pm	#5
alanjam Triode Join Date: Dec 2015 Location: Crawley, West Sussex, UK. Posts: 34	Re: ERG DC-DC converters You are indeed correct David - they are relays. I managed to find the 430 ohm winding on one of them and thus soon found two sets of contacts. Thanks for solving this little puzzle for me. Alan