[GreenKeys] Fw: Rewiring a Model 19 ASR for RTTY

[Anthony Vallot]

Robert:

Selenium rectifiers are ancient technology.  They could be replaced with 
1N4004 diodes which are rated 400 volts at 5 amps.

Besides, when selenium rectifiers fail, they put out a very recognizable 
noxious vapor.

Tony Vallot, W5OQJ
----- Original Message ----- 
From: <WA5CAB at cs.com>
To: <greenkeys at mailman.qth.net>
Sent: Monday, September 19, 2011 12:49 PM
Subject: Re: [GreenKeys] Fw: Rewiring a Model 19 ASR for RTTY


> For those who don't know, bare selenium cells are slightly photovoltaic.
> But you have to remove the paint that they are all coated with.
>
> In a message dated 09/19/2011 12:22:47 PM Central Daylight Time,
> epvgk at limpoc.com writes:
>> or selenium rectifiers.   I sure hope
>> >>people
>> >>convert those rectifiers to solar cells and don't simply discard them!
>> I
>> >>seem to recall powering a radio from selenium "cells" back in 1955.
>
> Robert Downs - Houston
> wa5cab dot com (Web Store)
> MVPA 9480
> ______________________________________________________________
> GreenKeys mailing list
> Home: http://mailman.qth.net/mailman/listinfo/greenkeys
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:GreenKeys at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html