[Amps] Advice needed for SS amp

[Jim Garland]

I could be wrong, but I doubt Peltier coolers would be a very practical
solution. The typical ones on eBay or at surplus outlets are basically slabs
of a thermelectric material between two metal plates. When a DC current
flows through the material, one plate gets cold, the other plate gets hot.
Unfortunately, they require many amperes of current to obtain a modest
amount of cooling. A typical application is to cool soft drinks in a car
mini-refrigerator. There may be specialized ones for the aerospace and
electronics industry, but I've not seen them on sale at reasonable prices.
To cool a device that dissipates a KW would probably consume more power than
the device itself.
73,
Jim W8ZR

> -----Original Message-----
> From: Amps [mailto:amps-bounces at contesting.com] On Behalf Of Bill Turner
> Sent: Thursday, June 06, 2013 6:25 AM
> To: Amps
> Subject: Re: [Amps] Advice needed for SS amp
> 
> ORIGINAL MESSAGE:          (may be snipped)
> 
> On Thu, 06 Jun 2013 00:48:43 -0400, Roger wrote:
> 
> >If refrigerated it can greatly increase the transistor's power handling
> >capacity. With computers they just submerge the entire CPU, or CPUs
> >directly in the refrigerant.
> 
> REPLY:
> 
> Interesting thought. I know there are Peltier junction coolers available
> though I don't know much about them or how expensive they are for an
> adequate size. I see a few listed on eBay.
> 
> Will investigate further.
> 
> 73, Bill W6WRT
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