13 Aug
2004
13 Aug
'04
6:49 a.m.
From: "ben franchuk"
<bfranchuk(a)jetnet.ab.ca>
Geoffrey Thomas wrote:
Hi
The circuit is called a reflex circuit. The second web page
above shows a tube reflex circuit.
Dwight
Reminds me of the old Radio Constructor designs
where the designer made one
transistor do both rf and af amplification.
Can't remember his name - or what he called his designs.
I'm sure he was knighted or something like that .... anybody ?
- Sir Alec Douglas Hall ? was it ?
Sounds too much like Alec Douglas Hume !
I have no idea who invented it since it was used every where, since the
humble
vacume tube ( valve) was invented. You can still buy or build them today.
http://www.vcomp.co.uk/one_tube_1935/one_tube_1935.htm
http://schmarder.com/radios/tube/index.htm
Ben.
17 Aug
17 Aug
7:39 a.m.
----- Original Message -----
From: "Dwight K. Elvey" <dwight.elvey(a)amd.com>
To: <cctalk(a)classiccmp.org>
Sent: Friday, August 13, 2004 7:49 PM
Subject: Re: Gaps in the collection (was Re: rarest computers. )
Hi
The circuit is called a reflex circuit. The second web page
above shows a tube reflex circuit.
Dwight
Yes, thanks - but the author had a special name for it - that's what I can't
remember.
Geoff.
>From: "ben franchuk"
<bfranchuk(a)jetnet.ab.ca>
>
>Geoffrey Thomas wrote:
>> Reminds me of the old Radio Constructor designs where the designer made
one
transistor do both rf and af amplification.
Can't remember his name - or what he called his designs.
I'm sure he was knighted or something like that .... anybody ?
- Sir Alec Douglas Hall ? was it ?
Sounds too much like Alec Douglas Hume !
I have no idea who invented it since it was used every where, since the
humble
vacume tube ( valve) was invented. You can still buy or build them today.
http://www.vcomp.co.uk/one_tube_1935/one_tube_1935.htm
http://schmarder.com/radios/tube/index.htm
Ben.
9:05 a.m.
Geoffrey Thomas wrote:
Yes, thanks - but the author had a special name for it
- that's what I can't
remember.
Was it "regenerative"? Or is that a different type of circuit
altogether? See, for example:
http://www.electronics-tutorials.com/receivers/regen-radio-receiver.htm
--
John Honniball
coredump(a)gifford.co.uk
7:47 a.m.
Just remembered - it was the "spontaflex" ,- it was Sir Douglas Hall and
there is a web page devoted to his circuits.
Geoff.
----- Original Message -----
From: "Dwight K. Elvey" <dwight.elvey(a)amd.com>
To: <cctalk(a)classiccmp.org>
Sent: Friday, August 13, 2004 7:49 PM
Subject: Re: Gaps in the collection (was Re: rarest computers. )
Hi
The circuit is called a reflex circuit. The second web page
above shows a tube reflex circuit.
Dwight
>From: "ben franchuk"
<bfranchuk(a)jetnet.ab.ca>
>
>Geoffrey Thomas wrote:
>> Reminds me of the old Radio Constructor designs where the designer made
one
transistor do both rf and af amplification.
Can't remember his name - or what he called his designs.
I'm sure he was knighted or something like that .... anybody ?
- Sir Alec Douglas Hall ? was it ?
Sounds too much like Alec Douglas Hume !
I have no idea who invented it since it was used every where, since the
humble
vacume tube ( valve) was invented. You can still buy or build them today.
http://www.vcomp.co.uk/one_tube_1935/one_tube_1935.htm
http://schmarder.com/radios/tube/index.htm
Ben.
7434
days inactive
7438
days old
3 comments
3 participants
participants (3)
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coredump＠gifford.co.uk -
dwight.elvey＠amd.com -
geoffreythomas＠onetel.com