Empathy List Archives

JG

Joseph Gray

Sat, Sep 26, 2009 1:59 AM

Does anyone know where I can get an inexpensive 12VDC to 48VDC
converter to power one of my Z3801A's? I can find 12VDC to 24VDC
units, like this one at Jameco:
http://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&storeId=10001&catalogId=10001&productId=212514

Thanks.

Does anyone know where I can get an inexpensive 12VDC to 48VDC converter to power one of my Z3801A's? I can find 12VDC to 24VDC units, like this one at Jameco: http://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&storeId=10001&catalogId=10001&productId=212514 Thanks.

JG

Joseph Gray

Sat, Sep 26, 2009 2:05 AM

Oop. I just noticed that Jameco unit is not for 12VDC input. The "A"
model here is the correct one:
http://www.trcelectronics.com/Meanwell/sd-50a-24.shtml

In any case, I still can't find something similar with a 48VDC output.

---------- Forwarded message ----------
From: Joseph Gray jgray@zianet.com
Date: Fri, Sep 25, 2009 at 7:59 PM
Subject: DC-DC converter
To: time-nuts@febo.com

Does anyone know where I can get an inexpensive 12VDC to 48VDC
converter to power one of my Z3801A's? I can find 12VDC to 24VDC
units, like this one at Jameco:
http://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&storeId=10001&catalogId=10001&productId=212514

Thanks.

Oop. I just noticed that Jameco unit is not for 12VDC input. The "A" model here is the correct one: http://www.trcelectronics.com/Meanwell/sd-50a-24.shtml In any case, I still can't find something similar with a 48VDC output. ---------- Forwarded message ---------- From: Joseph Gray <jgray@zianet.com> Date: Fri, Sep 25, 2009 at 7:59 PM Subject: DC-DC converter To: time-nuts@febo.com Does anyone know where I can get an inexpensive 12VDC to 48VDC converter to power one of my Z3801A's? I can find 12VDC to 24VDC units, like this one at Jameco: http://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&storeId=10001&catalogId=10001&productId=212514 Thanks.

MF

Mike Feher

Sat, Sep 26, 2009 2:18 AM

I actually built a 48 volt supply inside of my Z3801A. There is just enough
room between the front panel and the pc board to install a transformer, in
my case two, and a bridge. A large electrolytic is mounted horizontally to
the back panel. The 48 volt connector location was modified to accept a
regular 3 prong filtered AC connector. Has been working great for about 7
years now. I also replaced the top cover with a copper screen mesh to keep
it cooler. Not sure if it was necessary, it just seemed the original top
plate got very warm. Regards - Mike

Mike B. Feher, N4FS
89 Arnold Blvd.
Howell, NJ, 07731
732-886-5960

-----Original Message-----
From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On
Behalf Of Joseph Gray
Sent: Friday, September 25, 2009 10:05 PM
To: time-nuts@febo.com
Subject: [time-nuts] Fwd: DC-DC converter

Oop. I just noticed that Jameco unit is not for 12VDC input. The "A"
model here is the correct one:
http://www.trcelectronics.com/Meanwell/sd-50a-24.shtml

In any case, I still can't find something similar with a 48VDC output.

---------- Forwarded message ----------
From: Joseph Gray jgray@zianet.com
Date: Fri, Sep 25, 2009 at 7:59 PM
Subject: DC-DC converter
To: time-nuts@febo.com

Does anyone know where I can get an inexpensive 12VDC to 48VDC
converter to power one of my Z3801A's? I can find 12VDC to 24VDC
units, like this one at Jameco:
http://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&sto
reId=10001&catalogId=10001&productId=212514

Thanks.

time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

I actually built a 48 volt supply inside of my Z3801A. There is just enough room between the front panel and the pc board to install a transformer, in my case two, and a bridge. A large electrolytic is mounted horizontally to the back panel. The 48 volt connector location was modified to accept a regular 3 prong filtered AC connector. Has been working great for about 7 years now. I also replaced the top cover with a copper screen mesh to keep it cooler. Not sure if it was necessary, it just seemed the original top plate got very warm. Regards - Mike Mike B. Feher, N4FS 89 Arnold Blvd. Howell, NJ, 07731 732-886-5960 -----Original Message----- From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On Behalf Of Joseph Gray Sent: Friday, September 25, 2009 10:05 PM To: time-nuts@febo.com Subject: [time-nuts] Fwd: DC-DC converter Oop. I just noticed that Jameco unit is not for 12VDC input. The "A" model here is the correct one: http://www.trcelectronics.com/Meanwell/sd-50a-24.shtml In any case, I still can't find something similar with a 48VDC output. ---------- Forwarded message ---------- From: Joseph Gray <jgray@zianet.com> Date: Fri, Sep 25, 2009 at 7:59 PM Subject: DC-DC converter To: time-nuts@febo.com Does anyone know where I can get an inexpensive 12VDC to 48VDC converter to power one of my Z3801A's? I can find 12VDC to 24VDC units, like this one at Jameco: http://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&sto reId=10001&catalogId=10001&productId=212514 Thanks. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.

JG

Joseph Gray

Sat, Sep 26, 2009 2:44 AM

Mike,

Thanks for the suggestion. I can come up with AC-DC supplies to power
these things, but I would like to be able to power them from 12VDC.
This gives me some flexibility to use a battery backup or even go
mobile/portable if I want.

Joe
KA5ZEC

On Fri, Sep 25, 2009 at 8:18 PM, Mike Feher mfeher@eozinc.com wrote:

I actually built a 48 volt supply inside of my Z3801A. There is just enough
room between the front panel and the pc board to install a transformer, in
my case two, and a bridge. A large electrolytic is mounted horizontally to
the back panel. The 48 volt connector location was modified to accept a
regular 3 prong filtered AC connector. Has been working great for about 7
years now. I also replaced the top cover with a copper screen mesh to keep
it cooler. Not sure if it was necessary, it just seemed the original top
plate got very warm. Regards - Mike

Mike B. Feher, N4FS
89 Arnold Blvd.
Howell, NJ, 07731
732-886-5960

-----Original Message-----
From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On
Behalf Of Joseph Gray
Sent: Friday, September 25, 2009 10:05 PM
To: time-nuts@febo.com
Subject: [time-nuts] Fwd: DC-DC converter

Oop. I just noticed that Jameco unit is not for 12VDC input. The "A"
model here is the correct one:
http://www.trcelectronics.com/Meanwell/sd-50a-24.shtml

In any case, I still can't find something similar with a 48VDC output.

---------- Forwarded message ----------
From: Joseph Gray jgray@zianet.com
Date: Fri, Sep 25, 2009 at 7:59 PM
Subject: DC-DC converter
To: time-nuts@febo.com

Does anyone know where I can get an inexpensive 12VDC to 48VDC
converter to power one of my Z3801A's? I can find 12VDC to 24VDC
units, like this one at Jameco:
http://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&sto
reId=10001&catalogId=10001&productId=212514

Thanks.

time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

Mike, Thanks for the suggestion. I can come up with AC-DC supplies to power these things, but I would like to be able to power them from 12VDC. This gives me some flexibility to use a battery backup or even go mobile/portable if I want. Joe KA5ZEC On Fri, Sep 25, 2009 at 8:18 PM, Mike Feher <mfeher@eozinc.com> wrote: > I actually built a 48 volt supply inside of my Z3801A. There is just enough > room between the front panel and the pc board to install a transformer, in > my case two, and a bridge. A large electrolytic is mounted horizontally to > the back panel. The 48 volt connector location was modified to accept a > regular 3 prong filtered AC connector. Has been working great for about 7 > years now. I also replaced the top cover with a copper screen mesh to keep > it cooler. Not sure if it was necessary, it just seemed the original top > plate got very warm. Regards - Mike > > Mike B. Feher, N4FS > 89 Arnold Blvd. > Howell, NJ, 07731 > 732-886-5960 > > > > -----Original Message----- > From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On > Behalf Of Joseph Gray > Sent: Friday, September 25, 2009 10:05 PM > To: time-nuts@febo.com > Subject: [time-nuts] Fwd: DC-DC converter > > Oop. I just noticed that Jameco unit is not for 12VDC input. The "A" > model here is the correct one: > http://www.trcelectronics.com/Meanwell/sd-50a-24.shtml > > In any case, I still can't find something similar with a 48VDC output. > > > ---------- Forwarded message ---------- > From: Joseph Gray <jgray@zianet.com> > Date: Fri, Sep 25, 2009 at 7:59 PM > Subject: DC-DC converter > To: time-nuts@febo.com > > > Does anyone know where I can get an inexpensive 12VDC to 48VDC > converter to power one of my Z3801A's? I can find 12VDC to 24VDC > units, like this one at Jameco: > http://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&sto > reId=10001&catalogId=10001&productId=212514 > > Thanks. > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > >

AH

Alan Hochhalter

Sat, Sep 26, 2009 3:14 AM

Joseph Gray wrote:

Does anyone know where I can get an inexpensive 12VDC to 48VDC
converter to power one of my Z3801A's? I can find 12VDC to 24VDC
units, like this one at Jameco:
http://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&storeId=10001&catalogId=10001&productId=212514

Thanks.

Powerstream (http://www.powerstream.com) makes a dc/dc converter that,
if I understand it correctly, can take 8-48 V in and put out 2-80 V.
I've never used one but they make it sound like you can program the
output voltage. The price isn't exactly low, but 12 V to 48 V seems to
be much less common than the other way round unless you find a surplus
unit or something like that. The only experience I have with their
products is two 24 V to 12 V converters from them for use in a surplus
military truck. I don't have all that many hours of use to judge their
reliability.

Alan

Joseph Gray wrote: > Does anyone know where I can get an inexpensive 12VDC to 48VDC > converter to power one of my Z3801A's? I can find 12VDC to 24VDC > units, like this one at Jameco: > http://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&storeId=10001&catalogId=10001&productId=212514 > > Thanks. > > Powerstream (http://www.powerstream.com) makes a dc/dc converter that, if I understand it correctly, can take 8-48 V in and put out 2-80 V. I've never used one but they make it sound like you can program the output voltage. The price isn't exactly low, but 12 V to 48 V seems to be much less common than the other way round unless you find a surplus unit or something like that. The only experience I have with their products is two 24 V to 12 V converters from them for use in a surplus military truck. I don't have all that many hours of use to judge their reliability. Alan

AH

Alan Hochhalter

Sat, Sep 26, 2009 3:24 AM

Alan Hochhalter wrote:

Joseph Gray wrote:

Does anyone know where I can get an inexpensive 12VDC to 48VDC
converter to power one of my Z3801A's? I can find 12VDC to 24VDC
units, like this one at Jameco:
http://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&storeId=10001&catalogId=10001&productId=212514

Thanks.

Powerstream (http://www.powerstream.com) makes a dc/dc converter that,
if I understand it correctly, can take 8-48 V in and put out 2-80 V.
I've never used one but they make it sound like you can program the
output voltage. The price isn't exactly low, but 12 V to 48 V seems
to be much less common than the other way round unless you find a
surplus unit or something like that. The only experience I have with
their products is two 24 V to 12 V converters from them for use in a
surplus military truck. I don't have all that many hours of use to
judge their reliability.

Alan

Ignore what I just said in my last e-mail. I didn't read the part about
the $500-$2000 fee for them to set it up! I thought you could do that
yourself if you got a board for $80. Way to expensive to consider!

Alan Hochhalter wrote: > Joseph Gray wrote: >> Does anyone know where I can get an inexpensive 12VDC to 48VDC >> converter to power one of my Z3801A's? I can find 12VDC to 24VDC >> units, like this one at Jameco: >> http://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&storeId=10001&catalogId=10001&productId=212514 >> >> >> Thanks. >> >> > Powerstream (http://www.powerstream.com) makes a dc/dc converter that, > if I understand it correctly, can take 8-48 V in and put out 2-80 V. > I've never used one but they make it sound like you can program the > output voltage. The price isn't exactly low, but 12 V to 48 V seems > to be much less common than the other way round unless you find a > surplus unit or something like that. The only experience I have with > their products is two 24 V to 12 V converters from them for use in a > surplus military truck. I don't have all that many hours of use to > judge their reliability. > > Alan > Ignore what I just said in my last e-mail. I didn't read the part about the $500-$2000 fee for them to set it up! I thought you could do that yourself if you got a board for $80. Way to expensive to consider!

BG

Brent Gordon

Sat, Sep 26, 2009 4:13 AM

Digi-Key
http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=102-1690-ND
Part #102-1690-ND
9-36V in, 48V 1.04A out
$85.46, in stock
9-pin module

Joseph Gray wrote:

Does anyone know where I can get an inexpensive 12VDC to 48VDC
converter to power one of my Z3801A's? I can find 12VDC to 24VDC
units, like this one at Jameco:
http://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&storeId=10001&catalogId=10001&productId=212514

Thanks.

time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

Digi-Key http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=102-1690-ND Part #102-1690-ND 9-36V in, 48V 1.04A out $85.46, in stock 9-pin module Joseph Gray wrote: > Does anyone know where I can get an inexpensive 12VDC to 48VDC > converter to power one of my Z3801A's? I can find 12VDC to 24VDC > units, like this one at Jameco: > http://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&storeId=10001&catalogId=10001&productId=212514 > > Thanks. > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > >

JG

Joseph Gray

Sat, Sep 26, 2009 5:13 AM

Brent,

Thanks for the info. Not nearly as inexpensive as the 24VDC unit that
I found, but at least it's less than $100.

Joe
KA5ZEC

On Fri, Sep 25, 2009 at 10:13 PM, Brent Gordon time-nuts@adobe-labs.com wrote:

Digi-Key
http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=102-1690-ND
Part #102-1690-ND
9-36V in, 48V 1.04A out
$85.46, in stock
9-pin module

Joseph Gray wrote:

Does anyone know where I can get an inexpensive 12VDC to 48VDC
converter to power one of my Z3801A's? I can find 12VDC to 24VDC
units, like this one at Jameco:

http://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&storeId=10001&catalogId=10001&productId=212514

Thanks.

time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

Brent, Thanks for the info. Not nearly as inexpensive as the 24VDC unit that I found, but at least it's less than $100. Joe KA5ZEC On Fri, Sep 25, 2009 at 10:13 PM, Brent Gordon <time-nuts@adobe-labs.com> wrote: > Digi-Key > http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=102-1690-ND > Part #102-1690-ND > 9-36V in, 48V 1.04A out > $85.46, in stock > 9-pin module > > > Joseph Gray wrote: >> >> Does anyone know where I can get an inexpensive 12VDC to 48VDC >> converter to power one of my Z3801A's? I can find 12VDC to 24VDC >> units, like this one at Jameco: >> >> http://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&storeId=10001&catalogId=10001&productId=212514 >> >> Thanks. >> >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. >> >> > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > >

EP

Ed Palmer

Sat, Sep 26, 2009 6:23 AM

Have you checked our favorite auction site? I saw some there by
searching for '12v 48v converter'. Wade through the ones that are 48V
-> 12V and there are a few that look interesting. One in particular
from Vicor looked quite attractive.

Ed

Joseph Gray wrote:

Does anyone know where I can get an inexpensive 12VDC to 48VDC
converter to power one of my Z3801A's? I can find 12VDC to 24VDC
units, like this one at Jameco:
http://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&storeId=10001&catalogId=10001&productId=212514

Thanks.

time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

Have you checked our favorite auction site? I saw some there by searching for '12v 48v converter'. Wade through the ones that are 48V -> 12V and there are a few that look interesting. One in particular from Vicor looked quite attractive. Ed Joseph Gray wrote: > Does anyone know where I can get an inexpensive 12VDC to 48VDC > converter to power one of my Z3801A's? I can find 12VDC to 24VDC > units, like this one at Jameco: > http://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&storeId=10001&catalogId=10001&productId=212514 > > Thanks. > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > >

LJ

Lux, Jim (337C)

Sat, Sep 26, 2009 2:39 PM

On 9/25/09 11:23 PM, "Ed Palmer" ed_palmer@sasktel.net wrote:

Have you checked our favorite auction site? I saw some there by
searching for '12v 48v converter'. Wade through the ones that are 48V
-> 12V and there are a few that look interesting. One in particular
from Vicor looked quite attractive.

Ed

I think he was looking for 12V to 48V, which is substantially less common.
48V to whatever is quite common, since 48V is a standard DC bus voltage.

Of course, another problem is that the Z3801A doesn't use 48V. It takes more
voltage, from K8CU's site: The Z3801A is specified by HP (depending upon
model) as either a nominal minus 54 or plus 27 volt device. The best bet
is to keep the voltage at the nominal value specified by HP. This way any
out of specification internal DC to DC converters are satisfied, and the
units will perform normally. Reports from other users confirm this.

Mouser and Digikey both have a ton of DC/DC bricks with isolated inputs and
outputs. You can series the outputs (make sure you've got load resistors on
each one, and perhaps some diodes)

On 9/25/09 11:23 PM, "Ed Palmer" <ed_palmer@sasktel.net> wrote: > Have you checked our favorite auction site? I saw some there by > searching for '12v 48v converter'. Wade through the ones that are 48V > -> 12V and there are a few that look interesting. One in particular > from Vicor looked quite attractive. > > Ed I think he was looking for 12V to 48V, which is substantially less common. 48V to whatever is quite common, since 48V is a standard DC bus voltage. Of course, another problem is that the Z3801A doesn't use 48V. It takes more voltage, from K8CU's site: The Z3801A is specified by HP (depending upon model) as either a nominal minus 54 or plus 27 volt device. The best bet is to keep the voltage at the nominal value specified by HP. This way any out of specification internal DC to DC converters are satisfied, and the units will perform normally. Reports from other users confirm this. Mouser and Digikey both have a ton of DC/DC bricks with isolated inputs and outputs. You can series the outputs (make sure you've got load resistors on each one, and perhaps some diodes)

time-nuts@lists.febo.com

DC-DC converter