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Old February 10th 10, 06:38 PM posted to rec.radio.shortwave
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Posts: 2,027
Default Recommendations - 12 / 13.8v Power Supply, ~ 5 amp?

Hi, folks - If you please, I am looking for recommendations for a PS
that will provide the usual 12 or 13.8v, about 5 - 7 amps be plenty.
Love to get rid of the myriad 500 ma wall-warts. I'd rather not have
it be too expensive, but it would be nice if it didn't send spikes,
blow up or cause hash or electrical hum. Any thoughts? There is a
plethora of manufacturers and models, reviews are all over the place,
I have no idea which ones are OK. Pyramid makes a 5-amp job that
would be great, if it's any good. I also see Radio Shack PSs at about
twice that current. Would a switching PS be better?

Thanks in advance ~

Bruce Jensen
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Old February 10th 10, 06:55 PM posted to rec.radio.shortwave
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Posts: 313
Default Recommendations - 12 / 13.8v Power Supply, ~ 5 amp?

On 2/10/10 12:38 , bpnjensen wrote:
Hi, folks - If you please, I am looking for recommendations for a PS
that will provide the usual 12 or 13.8v, about 5 - 7 amps be plenty.
Love to get rid of the myriad 500 ma wall-warts. I'd rather not have
it be too expensive, but it would be nice if it didn't send spikes,
blow up or cause hash or electrical hum. Any thoughts? There is a
plethora of manufacturers and models, reviews are all over the place,
I have no idea which ones are OK. Pyramid makes a 5-amp job that
would be great, if it's any good. I also see Radio Shack PSs at about
twice that current. Would a switching PS be better?

Thanks in advance ~

Bruce Jensen




A switching supply may actually become another source of hash,
depending on shielding, which usually, isn't so good. There are
measures to attenuate the noise, though. It takes some doing.
Definitely not plug an play, if noise is a issue.

I replaced my wall warts in the radio room with an Astron VS-20M.
Serious power. Serious regulation. Very clean power. Nice listening.

Go to MCMelectronics.com and look at some of the Tenma supplies.
Cost effective, and they do what you need.

There are dozens of other makes.

Things to look for:

Voltage range.

Range of current delivery and at what voltages max current is
available.

Meters for both current and voltage are nice. (Volt meter more
important than current meter. If you dial up the right voltage, the
radios will only take the current they need. Anything beyond a
modest current reserve can be dialed back for safety. Without a
current meter, if you dial back the current output of the power
supply below the draw, you'll see a voltage drop at the radio.)

Lots of cooling vents.

Heavy input cable.

30A binding posts at the output.


You can even find a good power supply used on e-Bay.







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Old February 10th 10, 07:11 PM posted to rec.radio.shortwave
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Posts: 2,027
Default Recommendations - 12 / 13.8v Power Supply, ~ 5 amp?

On Feb 10, 10:55*am, "D. Peter Maus"
wrote:
On 2/10/10 12:38 , bpnjensen wrote:

Hi, folks - If you please, I am looking for recommendations for a PS
that will provide the usual 12 or 13.8v, about 5 - 7 amps be plenty.
Love to get rid of the myriad 500 ma wall-warts. *I'd rather not have
it be too expensive, but it would be nice if it didn't send spikes,
blow up or cause hash or electrical hum. *Any thoughts? *There is a
plethora of manufacturers and models, reviews are all over the place,
I have no idea which ones are OK. *Pyramid makes a 5-amp job that
would be great, if it's any good. *I also see Radio Shack PSs at about
twice that current. *Would a switching PS be better?


Thanks in advance ~


Bruce Jensen


* *A switching supply may actually become another source of hash,
depending on shielding, which usually, isn't so good. There are
measures to attenuate the noise, though. It takes some doing.
Definitely not plug an play, if noise is a issue.

* *I replaced my wall warts in the radio room with an Astron VS-20M.
Serious power. Serious regulation. Very clean power. Nice listening.

* *Go to MCMelectronics.com and look at some of the Tenma supplies.
Cost effective, and they do what you need.

* *There are dozens of other makes.

* *Things to look for:

* *Voltage range.

* *Range of current delivery and at what voltages max current is
available.

* *Meters for both current and voltage are nice. (Volt meter more
important than current meter. If you dial up the right voltage, the
radios will only take the current they need. Anything beyond a
modest current reserve can be dialed back for safety. Without a
current meter, if you dial back the current output of the power
supply below the draw, you'll see a voltage drop at the radio.)

* *Lots of cooling vents.

* *Heavy input cable.

* *30A binding posts at the output.

* *You can even find a good power supply used on e-Bay.


Thanks Peter - I had a feeling you'd have some good info on this :-)
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Old February 10th 10, 07:17 PM posted to rec.radio.shortwave
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First recorded activity by RadioBanter: May 2009
Posts: 313
Default Recommendations - 12 / 13.8v Power Supply, ~ 5 amp?

On 2/10/10 13:11 , bpnjensen wrote:
On Feb 10, 10:55 am, "D. Peter
wrote:
On 2/10/10 12:38 , bpnjensen wrote:

Hi, folks - If you please, I am looking for recommendations for a PS
that will provide the usual 12 or 13.8v, about 5 - 7 amps be plenty.
Love to get rid of the myriad 500 ma wall-warts. I'd rather not have
it be too expensive, but it would be nice if it didn't send spikes,
blow up or cause hash or electrical hum. Any thoughts? There is a
plethora of manufacturers and models, reviews are all over the place,
I have no idea which ones are OK. Pyramid makes a 5-amp job that
would be great, if it's any good. I also see Radio Shack PSs at about
twice that current. Would a switching PS be better?


Thanks in advance ~


Bruce Jensen


A switching supply may actually become another source of hash,
depending on shielding, which usually, isn't so good. There are
measures to attenuate the noise, though. It takes some doing.
Definitely not plug an play, if noise is a issue.

I replaced my wall warts in the radio room with an Astron VS-20M.
Serious power. Serious regulation. Very clean power. Nice listening.

Go to MCMelectronics.com and look at some of the Tenma supplies.
Cost effective, and they do what you need.

There are dozens of other makes.

Things to look for:

Voltage range.

Range of current delivery and at what voltages max current is
available.

Meters for both current and voltage are nice. (Volt meter more
important than current meter. If you dial up the right voltage, the
radios will only take the current they need. Anything beyond a
modest current reserve can be dialed back for safety. Without a
current meter, if you dial back the current output of the power
supply below the draw, you'll see a voltage drop at the radio.)

Lots of cooling vents.

Heavy input cable.

30A binding posts at the output.

You can even find a good power supply used on e-Bay.


Thanks Peter - I had a feeling you'd have some good info on this :-)




Oh yeah. I'm just full of it.


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Old February 10th 10, 10:41 PM posted to rec.radio.shortwave
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First recorded activity by RadioBanter: Jun 2006
Posts: 7,243
Default Recommendations - 12 / 13.8v Power Supply, ~ 5 amp?



"D. Peter Maus" wrote:

On 2/10/10 12:38 , bpnjensen wrote:
Hi, folks - If you please, I am looking for recommendations for a PS
that will provide the usual 12 or 13.8v, about 5 - 7 amps be plenty.
Love to get rid of the myriad 500 ma wall-warts. I'd rather not have
it be too expensive, but it would be nice if it didn't send spikes,
blow up or cause hash or electrical hum. Any thoughts? There is a
plethora of manufacturers and models, reviews are all over the place,
I have no idea which ones are OK. Pyramid makes a 5-amp job that
would be great, if it's any good. I also see Radio Shack PSs at about
twice that current. Would a switching PS be better?

Thanks in advance ~

Bruce Jensen


A switching supply may actually become another source of hash,
depending on shielding, which usually, isn't so good. There are
measures to attenuate the noise, though. It takes some doing.
Definitely not plug an play, if noise is a issue.

I replaced my wall warts in the radio room with an Astron VS-20M.
Serious power. Serious regulation. Very clean power. Nice listening.


I use an Astron RS-20M here to power the Drake R7.



Go to MCMelectronics.com and look at some of the Tenma supplies.
Cost effective, and they do what you need.

There are dozens of other makes.

Things to look for:

Voltage range.

Range of current delivery and at what voltages max current is
available.

Meters for both current and voltage are nice. (Volt meter more
important than current meter. If you dial up the right voltage, the
radios will only take the current they need. Anything beyond a
modest current reserve can be dialed back for safety. Without a
current meter, if you dial back the current output of the power
supply below the draw, you'll see a voltage drop at the radio.)

Lots of cooling vents.

Heavy input cable.

30A binding posts at the output.

You can even find a good power supply used on e-Bay.




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Old February 10th 10, 11:08 PM posted to rec.radio.shortwave
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First recorded activity by RadioBanter: May 2009
Posts: 313
Default Recommendations - 12 / 13.8v Power Supply, ~ 5 amp?

On 2/10/10 16:41 , dxAce wrote:


"D. Peter Maus" wrote:


I replaced my wall warts in the radio room with an Astron VS-20M.
Serious power. Serious regulation. Very clean power. Nice listening.


I use an Astron RS-20M here to power the Drake R7.




May be where I got the idea.

It's a great PS.
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Old February 11th 10, 03:34 AM posted to rec.radio.shortwave
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Posts: 2,027
Default Recommendations - 12 / 13.8v Power Supply, ~ 5 amp?

On Feb 10, 3:08*pm, "D. Peter Maus"
wrote:
On 2/10/10 16:41 , dxAce wrote:



"D. Peter Maus" wrote:
* * I replaced my wall warts in the radio room with an Astron VS-20M.
Serious power. Serious regulation. Very clean power. Nice listening.


I use an Astron RS-20M here to power the Drake R7.


* *May be where I got the idea.

* *It's a great PS.


You could probably power a dozen R7s with 20 amps!. I'm shooting for
the Astron 7 amp job - that should tide me over.
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Old February 11th 10, 03:56 AM posted to rec.radio.shortwave
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First recorded activity by RadioBanter: May 2009
Posts: 313
Default Recommendations - 12 / 13.8v Power Supply, ~ 5 amp?

On 2/10/10 21:34 , bpnjensen wrote:
On Feb 10, 3:08 pm, "D. Peter
wrote:
On 2/10/10 16:41 , dxAce wrote:



"D. Peter Maus" wrote:
I replaced my wall warts in the radio room with an Astron VS-20M.
Serious power. Serious regulation. Very clean power. Nice listening.


I use an Astron RS-20M here to power the Drake R7.


May be where I got the idea.

It's a great PS.


You could probably power a dozen R7s with 20 amps!. I'm shooting for
the Astron 7 amp job - that should tide me over.




In boating...they call it '2 foot-itis.' In audio we call it a
'4-track fix.'

No matter how bit a boat you have, you find it's just about 2 foot
shy of what you need for a really good party. No matter how many
channels you have, you find you need 4 more channels for the right mix.

If you're figuring 7 amps, within a year, you'll be looking for 2
more amps.

Think future growth.


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Old February 11th 10, 02:59 PM posted to rec.radio.shortwave
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First recorded activity by RadioBanter: Jan 2009
Posts: 5,185
Default Recommendations - 12 / 13.8v Power Supply, ~ 5 amp?

bpnjensen wrote:
Hi, folks - If you please, I am looking for recommendations for a PS
that will provide the usual 12 or 13.8v, about 5 - 7 amps be plenty.
Love to get rid of the myriad 500 ma wall-warts. I'd rather not have
it be too expensive, but it would be nice if it didn't send spikes,
blow up or cause hash or electrical hum. Any thoughts? There is a
plethora of manufacturers and models, reviews are all over the place,
I have no idea which ones are OK. Pyramid makes a 5-amp job that
would be great, if it's any good. I also see Radio Shack PSs at about
twice that current. Would a switching PS be better?

Thanks in advance ~

Bruce Jensen


I use an Astron switch mode supply. It makes no noise. It makes no
heat. Linear supplies waste electricity.
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Old February 11th 10, 03:39 PM posted to rec.radio.shortwave
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First recorded activity by RadioBanter: Jul 2006
Posts: 2,027
Default Recommendations - 12 / 13.8v Power Supply, ~ 5 amp?

On Feb 11, 6:59*am, dave wrote:
bpnjensen wrote:
Hi, folks - If you please, I am looking for recommendations for a PS
that will provide the usual 12 or 13.8v, about 5 - 7 amps be plenty.
Love to get rid of the myriad 500 ma wall-warts. *I'd rather not have
it be too expensive, but it would be nice if it didn't send spikes,
blow up or cause hash or electrical hum. *Any thoughts? *There is a
plethora of manufacturers and models, reviews are all over the place,
I have no idea which ones are OK. *Pyramid makes a 5-amp job that
would be great, if it's any good. *I also see Radio Shack PSs at about
twice that current. *Would a switching PS be better?


Thanks in advance ~


Bruce Jensen


I use an Astron switch mode supply. *It makes no noise. *It makes no
heat. *Linear supplies waste electricity.


No hash or other electrical noise artifacts?


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