As the one that bought the Transco from Chris can I say many thanks
to eyeryone for all the advice about operating it on DC. It is very
much appreciated. With 110V AC coils I had expected to have to put
it in the amplifier and move the amplifier relay to a new masthead
amp. But if it will work on 50V DC then I'm happy to put the Transco
at the masthead.
toggle quoted messageShow quoted text
I gather it's a good idea to heatsink them by bolting the relay to a
lump of aluminium?
I have been after a Transco Y relay for some time but used ones (who
can afford a new one!) only seem to come up for sale on ebay in the
USA with eye watering postage costs.
73 Paul G4DCV
On 16-Mar-16 19:42, 'Dave'
My 110V AC
coiled Y type works fine in my 48V DC amplifier
I have successfully used a relay with a 240V AC coil
with 100V DC applied in a
2m PA built 40 yrs ago that's still going well. On that
basis a supply of
around 50V DC might work with 110V AC coils.
On the subject of its 110VAC
coil. I don't have
any AC relays of any type to test this idea, but
has anyone ever made
tests on an AC relay to find what its DC pull in /
hold on characteristics are?
I don't know if there are any
core differences - apart from
its being laminated I suspect on the bigger coils,
but can they be operated
from a constant voltage, or current?
If the requirements end up at
reasonable values without the
risk of the coil cooking, there are enough SMPSU
modules around now with
variable output voltage to make use of them.
On 16 March 2016 at 18:44,
Christopher Bartram cbartram@...
relay has now been sold
Christopher Bartram MIET
Christopher Bartram RF Design
Llygad yr Haul
Powys SY17 5LE
phone: +44 1686 237732
mobile: +44 7545 094490
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