[BC] 110 V DC AC/DC radios 5 tube all american

[nakayle@gmail.com]

They also must keep the remote control circuitry alive so you can turn
them on since almost all TVs are remote controlled these days.  (No
wonder we are a nation of fat asses now- can't get up to  turn a TV
on).

As for the RFI- many TV sets have switching power supplies these days-
sometimes they are even part of the horizontal sweep circuit.

- Nat


On 12/3/06, Dennis Cope <dcope at intercom.net> wrote:
> They had a diode across the on/off switch which, when off, supplied DC to
> the CRT filament to keep it hot.
>
> Dennis
>
>
> -----Original Message-----
> From: broadcast-bounces at radiolists.net
> [mailto:broadcast-bounces at radiolists.net]On Behalf Of Kevin Tekel
> Sent: Sunday, December 03, 2006 16:42
> To: broadcast at radiolists.net
> Subject: [BC] 110 V DC AC/DC radios 5 tube all american
>
>
> Cowboy wrote:
> > I'm still amazed that such unsafe junk was ever sold at all.
>
> Don't forget the "instant-on" TV sets which kept the tube filaments
> glowing even when switched off.
>
> Of course, nowadays virtally all electronic appliances have "soft"
> on/off switches, and a good portion of their circuitry remains active
> even when shut off.  I have a Sharp bookshelf stereo whose entire
> AM/FM tuner board remains powered up and active all the time -- not
> just when you're playing CDs or tapes, but even when the entire
> stereo is shut off.
>
> This creates huge headaches for hams and DXers because sometimes
> these electronic devices create even more RFI when they are switched
> off, than when they are on!  (And whatever happened to Part 15?  My
> laptop's power supply "brick" puts out RFI that has better coverage
> of the neighborhood on the AM band than my 100 mW AM transmitter!)
>
>
>
>
>
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