OT: Linear Power Supply?

[Jeff-229]

Hi gang,

Where can I buy a good quality LINEAR power supply that will provide at
least 500mA (that's all I need) at 12-14VDC?  I don't want a switching power
supply, due to fear that it would produce HF crud.

Thanks very much & 73,
Jeff
NE2J (formerly WB5GWB)
Long Island, NY

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[Dave Mueller-3]

Radio Shack used to sell a small 1A linear supply in a metal chassis.
Wall mount supplies are linear if they're heavy, but usually not regulated.  12VDC at 1A is a pretty
common size.

Dave AA4EE
K2 #5929

Jeff wrote:

> Hi gang,
>
> Where can I buy a good quality LINEAR power supply that will provide at
> least 500mA (that's all I need) at 12-14VDC?  I don't want a switching power
> supply, due to fear that it would produce HF crud.
>
> Thanks very much & 73,
> Jeff
> NE2J (formerly WB5GWB)
> Long Island, NY
>
> _______________________________________________
> Elecraft mailing list
> Post to: [hidden email]
> You must be a subscriber to post to the list.
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>
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>
>

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[Mike Markowski]

Astron makes the RS-3A (linear, 2.5A continuous) that goes for $40 at
hamradio.com.  I haven't tried it so can't offer more info than but maybe
someone else on the list knows more.

73,
Mike ab3ap

Dave Mueller wrote:

> Radio Shack used to sell a small 1A linear supply in a metal chassis.
> Wall mount supplies are linear if they're heavy, but usually not
> regulated.  12VDC at 1A is a pretty common size.
>
> Dave AA4EE
> K2 #5929
>
> Jeff wrote:
>> Hi gang,
>>
>> Where can I buy a good quality LINEAR power supply that will provide at
>> least 500mA (that's all I need) at 12-14VDC?  I don't want a switching
>> power
>> supply, due to fear that it would produce HF crud.
>>
>> Thanks very much & 73,
>> Jeff
>> NE2J (formerly WB5GWB)
>> Long Island, NY

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[Jim Brown-10]

At most hamfests, I see wall warts for sale cheap (a buck or two). The
heavier ones (and older ones) are more likely to be linear. I put Power Pole
connectors on all my ham gear, and most of my computer peripherals), then
run it off of 12V batteries that are float-charged by small power supplies.
It's a very effective "poor man's UPS." You simply need to to size the
supply so that it doesn't overcharge the battery.  

73,

Jim Brown K9YC



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