I am converting an old Marine Radio to a 160 mtr rig. The supply used a
transformer with a 100CPS vibrator. Can I use the transformer that came with
it on 60 CPS AC?

Tnx



Carl


--
Carl
WA1KPD
Visit My Boatanchor Collection at
http://home.comcast.net/~chnord/wa1kpd.html

"Carl WA1KPD" wrote in message
...
I am converting an old Marine Radio to a 160 mtr rig. The supply used a
transformer with a 100CPS vibrator. Can I use the transformer that came
with
it on 60 CPS AC?

Tnx



Carl



Carl

I got away with on a lot of early car radios, but the question is more
related to the amount of "iron" in the transformer core. Some
transformers have enough engineered leeway to allow operating
at lower frequencies, others will quickly overheat. Try it and see,
watch the transformer temperature closely..

Pete

" Uncle Peter" ) writes:
"Carl WA1KPD" wrote in message
...
I am converting an old Marine Radio to a 160 mtr rig. The supply used a
transformer with a 100CPS vibrator. Can I use the transformer that came
with
it on 60 CPS AC?

Tnx



Carl



Carl

I got away with on a lot of early car radios, but the question is more
related to the amount of "iron" in the transformer core. Some
transformers have enough engineered leeway to allow operating
at lower frequencies, others will quickly overheat. Try it and see,
watch the transformer temperature closely..

Pete



I ran an old RCA Carfone that way back in 1972. Scrounged up some
big filament transformers (and put them in series for 12vac), and
connected them to the Carfone's power supply where the vibrators
fed their transformers. I recall the Carfone's transformer did
get fairly hot, but I never had any problem doing it.

Michael VE2BVW

Build up a solid-state 100cps multi-vibrator to do
it right. Much easier than you imagine and it will
remain a mobile rig.
--
Dj


On Sat, 9 Jul 2005 16:45:31 UTC, "Carl WA1KPD"
wrote:

I am converting an old Marine Radio to a 160 mtr rig. The supply used a
transformer with a 100CPS vibrator. Can I use the transformer that came with
it on 60 CPS AC?
Carl

" wrote:

Build up a solid-state 100cps multi-vibrator to do
it right. Much easier than you imagine and it will
remain a mobile rig.
--
Dj

On Sat, 9 Jul 2005 16:45:31 UTC, "Carl WA1KPD"
wrote:

I am converting an old Marine Radio to a 160 mtr rig. The supply used a
transformer with a 100CPS vibrator. Can I use the transformer that came with
it on 60 CPS AC?
Carl


There are already solid state replacements on the market for old car
radios. If you are lucky, one of them may work. Ask Gary Tayman on
news:rec.antiques.radio+phono for information about them. He restores
old car radios for car collectors.

--
Link to my "Computers for disabled Veterans" project website deleted
after threats were telephoned to my church.

Michael A. Terrell
Central Florida

Carl WA1KPD wrote:
I am converting an old Marine Radio to a 160 mtr rig. The supply used a
transformer with a 100CPS vibrator. Can I use the transformer that came with
it on 60 CPS AC?

Certainly. The 100hz was a squarewave & there'll be enough core for
your 60hz sinepower. It's the radio units running 400hz & such that
are problematic & far too undersized. But if I were you I'd scope it
with the vibe under load first to be sure its really a 100hz (or so)
supply - I don't recall seeing a 100hz vibrator though there are a lot
of other things I haven't seen, too. You'll also have some filter L/C
issues to think of, or at least check, and there are hash components
you can get rid of. If the buffer cap's good I'd leave it in for handy
transient protection.

wrote:

Carl WA1KPD wrote:

I am converting an old Marine Radio to a 160 mtr rig. The supply used a
transformer with a 100CPS vibrator. Can I use the transformer that came with
it on 60 CPS AC?


Certainly. The 100hz was a squarewave & there'll be enough core for
your 60hz sinepower. It's the radio units running 400hz & such that
are problematic & far too undersized. But if I were you I'd scope it
with the vibe under load first to be sure its really a 100hz (or so)
supply - I don't recall seeing a 100hz vibrator though there are a lot
of other things I haven't seen, too. You'll also have some filter L/C
issues to think of, or at least check, and there are hash components
you can get rid of. If the buffer cap's good I'd leave it in for handy
transient protection.

Hmmm...I'm not so sure about this. I agree with Frank's concept but the
power xfmrs I see in car radios with typical ~100-120 cps vibrators seem
awfully small for 60 Hz use. Never tried one, though. Don't think I would.

-Bill

"-ex-" wrote in message news:dc647$42d1d839 the
power xfmrs I see in car radios with typical ~100-120 cps vibrators seem
awfully small for 60 Hz use. -Bill

They are but some were over engineered and can servive. It's a crap shoot.

--
73 and good DX. B.H.
Brian's Radio Universe
http://webpages.charter.net/brianhill/500.htm

I am looking for car radios with the vibrator? I want 1 of the 12 volt
radios. If anyone has 1 I sure would like to hear from ya. n4pge in
Griffin, Georgia.