- Original Message -
From: Bob Deuel Larry's tongue in cheek comment employing 866's as a
linear amplifier tube
prompted me to contribute the following: Certain full-wave rectifiers can
be
configured to amplify or oscillate. I have built audio, Hartley and
Simpson
oscillators using
If memory serves the diodes need to be configured push-pull for
amplifier use and push-push if employed as an oscillator. . Its
important to use a very noisy buffer in front the oscillator to cancel
the hash inherent to the diodes.The second diode acts similar to a
screen for steering
Phil
Dennis D. W7QHO
Glendale, CA
I think that was the APRIL issue of Tube Collector magazine.
The heck of it is, he used a galena crystal as a modulation
transformer!
On 16 Feb 2006 at 20:42, John Coleman ARS WA5BXO wrote:
OK BOB!
You got my attention. Explain more. I hope I'm not a sucker
here. I have seen and
Reverse biasing the galena crystal was a stroke of genius. 100% negative
side modulation with no need for clipping on the pos. side. Cleanest
class C sine wave ever. Brilliant.
Brian Carling wrote:
I think that was the APRIL issue of Tube Collector magazine.
The heck of it is, he used a
John,
Check this out:
http://uv201.com/Tube_Pages/heintz-kaufman.htm
Jim
WD5JKO
--- John Coleman ARS WA5BXO [EMAIL PROTECTED]
wrote:
OK BOB!
You got my attention. Explain more. I hope I'm not
a sucker
here. I have seen and extremely low mu amplifier
circuit (common
Or a pair of 5U4's in grounded-grid.
Joe W4AAB
- Original Message -
From: ne1s [EMAIL PROTECTED]
To: Discussion of AM Radio amradio@mailman.qth.net
Sent: Thursday, February 16, 2006 12:35 PM
Subject: [AMRadio] Re: AM Transmitter Advice??
Donald Chester
Or a pair of 5U4's in grounded-grid.
Joe W4AAB
Diode bias?
Barrie, W7ALW
OK BOB!
You got my attention. Explain more. I hope I'm not a sucker
here. I have seen and extremely low mu amplifier circuit (common
cathode) made by reverse biasing the plate of a triode and forward
biasing the grid where output is taken from the grid and input is on the
plate. So I
Hey Bob -
I really enjoyed reading the article about your 6AX5 transmitter in this
months Collector. Very cool stuff and what I like most
about it is you did for pure enjoyment. Kudos.
73,
Mark W1EOF
-Original Message-
From: Bob Deuel [mailto:[EMAIL PROTECTED]
Sent: Thursday,
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