G
george-b
Guest
can anyone send a circuit diagram for self build power amps using
valves.Thankyou George Black.
valves.Thankyou George Black.
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J
Jamie
Guest
george-b wrote:
--
Real Programmers Do things like this.
http://webpages.charter.net/jamie_5
can anyone send a circuit diagram for self build power amps using
valves.Thankyou George Black.
push pull using an output transformer?
--
Real Programmers Do things like this.
http://webpages.charter.net/jamie_5
E
Edward Rawde
Guest
"george-b" <george-b@ntlworld.com> wrote in message
news:RQ3Oe.65$k4.8@newsfe3-gui.ntli.net...
amplifier circuits in response to a request from your web browser.
http://www.google.com/search?&q=valve+amplifier+circuit
http://www.google.com/search?&q=tube+amplifier+schematic
Did you have any particular specification or configuration in mind?
Ed
>
news:RQ3Oe.65$k4.8@newsfe3-gui.ntli.net...
There are many web servers out there which can provide you with valvecan anyone send a circuit diagram for self build power amps using
valves.Thankyou George Black.
amplifier circuits in response to a request from your web browser.
http://www.google.com/search?&q=valve+amplifier+circuit
http://www.google.com/search?&q=tube+amplifier+schematic
Did you have any particular specification or configuration in mind?
Ed
>
R
Robert Baer
Guest
george-b wrote:
can anyone send a circuit diagram for self build power amps using
valves.Thankyou George Black.
How about a transformerless output?
A
Adrian Tuddenham
Guest
Robert Baer <robertbaer@earthlink.net> wrote:
needed a 120-ohm speaker.
I don't believe it was ever published as a project in any of their
amplifier designs books, but an outline of it was given in one of their
training manuals. It looked as though the circuit was taken from one of
their contemporary commercial hi-fi amplifiers.
I can't remember the name of the book but I'm pretty certain the authors
were Nijsen, Schobemma and Slot.
--
~ Adrian Tuddenham ~
(Remove the ".invalid"s and add ".co.uk" to reply)
www.poppyrecords.co.uk
Philips/Mullard produced one in the late 1950 or early 60s. I think itgeorge-b wrote:
can anyone send a circuit diagram for self build power amps using
valves.Thankyou George Black.
How about a transformerless output?
needed a 120-ohm speaker.
I don't believe it was ever published as a project in any of their
amplifier designs books, but an outline of it was given in one of their
training manuals. It looked as though the circuit was taken from one of
their contemporary commercial hi-fi amplifiers.
I can't remember the name of the book but I'm pretty certain the authors
were Nijsen, Schobemma and Slot.
--
~ Adrian Tuddenham ~
(Remove the ".invalid"s and add ".co.uk" to reply)
www.poppyrecords.co.uk
J
Joerg
Guest
Hello Robert,
do. Rewound a speaker coil on one of those monster speakers and that was
no fun at all. Then we placed large labels onto the wires, warning
everyone to never ever mess with these. The first twang on that E-guitar
was phenomenal. We thought the rafters would come crashing down.
Oh, and since a transformer was way over budget we opted for a
"transformerless power supply". Three cascades from 230V and huge
capacitors so we had enough oomph. In fact so much oomph that we could
trip a 230V/16A circuit breaker.
Regards, Joerg
http://www.analogconsultants.com
Is "valve" rightpondian for "tube"? (hold the tomatoes...)can anyone send a circuit diagram for self build power amps using
valves.Thankyou George Black.
We did one when I was a kid and had less respect for what 900VDC couldHow about a transformerless output?
do. Rewound a speaker coil on one of those monster speakers and that was
no fun at all. Then we placed large labels onto the wires, warning
everyone to never ever mess with these. The first twang on that E-guitar
was phenomenal. We thought the rafters would come crashing down.
Oh, and since a transformer was way over budget we opted for a
"transformerless power supply". Three cascades from 230V and huge
capacitors so we had enough oomph. In fact so much oomph that we could
trip a 230V/16A circuit breaker.
Regards, Joerg
http://www.analogconsultants.com
R
Robert Baer
Guest
Joerg wrote:
The directly related patents are:
C.T. Hall Mar 1955 #2,705,265 (filed June 1951)
J. Futterman Dec 1956 #2,773,136 (filed July 1953)
R. Karsten Jan 1988 #4,719,431 (filed Apr 1986)
R. Karsten Jun 2001 #6,242,977 B1 (filed May 1999)
And it is fun using the new design, touching the plates and ground -
and feel zilch.
And a gas, unplugging a tube or three while operating - and having
zero problems.
The "classic" Futterman design was a bitch to operate and caused a
lot of bad ingrained ideas as how bad OTL "is".
Modern OTL is very stable and robust.
stadard 8 ohm speaker.Hello Robert,
can anyone send a circuit diagram for self build power amps using
valves.Thankyou George Black.
Is "valve" rightpondian for "tube"? (hold the tomatoes...)
How about a transformerless output?
We did one when I was a kid and had less respect for what 900VDC could
do. Rewound a speaker coil on one of those monster speakers and that was
no fun at all. Then we placed large labels onto the wires, warning
everyone to never ever mess with these. The first twang on that E-guitar
was phenomenal. We thought the rafters would come crashing down.
Oh, and since a transformer was way over budget we opted for a
"transformerless power supply". Three cascades from 230V and huge
capacitors so we had enough oomph. In fact so much oomph that we could
trip a 230V/16A circuit breaker.
Regards, Joerg
http://www.analogconsultants.com
What i meant was no capacitor coupling to the speaker, and use of a
The directly related patents are:
C.T. Hall Mar 1955 #2,705,265 (filed June 1951)
J. Futterman Dec 1956 #2,773,136 (filed July 1953)
R. Karsten Jan 1988 #4,719,431 (filed Apr 1986)
R. Karsten Jun 2001 #6,242,977 B1 (filed May 1999)
And it is fun using the new design, touching the plates and ground -
and feel zilch.
And a gas, unplugging a tube or three while operating - and having
zero problems.
The "classic" Futterman design was a bitch to operate and caused a
lot of bad ingrained ideas as how bad OTL "is".
Modern OTL is very stable and robust.
A
Adrian Tuddenham
Guest
Joerg <notthisjoergsch@removethispacbell.net> wrote:
The word 'tube' is used in the UK to mean a CRT, the picture tube of a
TV or a computer monitor. 'Valve' is a thermionic device for
rectification or amplification (remember when they didn't used to be
tubular?).
I'm sure you all knew that anyway.
--
~ Adrian Tuddenham ~
(Remove the ".invalid"s and add ".co.uk" to reply)
www.poppyrecords.co.uk
No tomatoes, but just a clarification:Hello Robert,
can anyone send a circuit diagram for self build power amps using
valves.Thankyou George Black.
Is "valve" rightpondian for "tube"? (hold the tomatoes...)
The word 'tube' is used in the UK to mean a CRT, the picture tube of a
TV or a computer monitor. 'Valve' is a thermionic device for
rectification or amplification (remember when they didn't used to be
tubular?).
I'm sure you all knew that anyway.
--
~ Adrian Tuddenham ~
(Remove the ".invalid"s and add ".co.uk" to reply)
www.poppyrecords.co.uk
J
Joerg
Guest
Hello Adrian,
After that, hoover the carpet. Then off to pub (pronounced something
like "poub") for a few pints of McEwan's Heavy. Ah, the good times.
My first tube looked the shape of a Russion Babuschka. The others were
actually all tubular, including the steel ones.
Regards, Joerg
http://www.analogconsultants.com
I remember that from my days in Scotland. Turn on the tube or "telee".The word 'tube' is used in the UK to mean a CRT, the picture tube of a
TV or a computer monitor. 'Valve' is a thermionic device for
rectification or amplification (remember when they didn't used to be
tubular?).
After that, hoover the carpet. Then off to pub (pronounced something
like "poub") for a few pints of McEwan's Heavy. Ah, the good times.
My first tube looked the shape of a Russion Babuschka. The others were
actually all tubular, including the steel ones.
Regards, Joerg
http://www.analogconsultants.com
F
Fred Stevens
Guest
Joerg wrote:
http://www.amazon.com/exec/obidos/tg/detail/-/0750633565/qid=1124834650/sr=8-2/ref=sr_8_xs_ap_i1_xgl14/103-1171476-7699058?v=glance&s=books&n=50784
fred.
Try the book by the late John Linsley-Hood:Hello Adrian,
The word 'tube' is used in the UK to mean a CRT, the picture tube of a
TV or a computer monitor. 'Valve' is a thermionic device for
rectification or amplification (remember when they didn't used to be
tubular?).
I remember that from my days in Scotland. Turn on the tube or "telee".
After that, hoover the carpet. Then off to pub (pronounced something
like "poub") for a few pints of McEwan's Heavy. Ah, the good times.
My first tube looked the shape of a Russion Babuschka. The others were
actually all tubular, including the steel ones.
Regards, Joerg
http://www.analogconsultants.com
http://www.amazon.com/exec/obidos/tg/detail/-/0750633565/qid=1124834650/sr=8-2/ref=sr_8_xs_ap_i1_xgl14/103-1171476-7699058?v=glance&s=books&n=50784
fred.
J
Joerg
Guest
Hello Fred,
tubes. I grew up with tubes because they were available for free when I
was a teenager. Discarded transistorized TVs showed up much later and
then I could lay my hands on hotrods like the AF126.
Audio tube amps presented in the electronic magazines were often a
disappointment. To me 10 or 20 watts wasn't anything to write home
about, we could build that with a few 2N3055 in those days. The monster
tube amps that some of us built had to be calculated from scratch. The
only reason the kilowatt range could hardly be cracked was that the
typical circuit in Europe had "only" about 15 amps. One chord on the
guitar and the lights went out.
Regards, Joerg
http://www.analogconsultants.com
Thanks. Interesting. But I was more into RF gear in my tube days. BigTry the book by the late John Linsley-Hood:
http://www.amazon.com/exec/obidos/tg/detail/-/0750633565/qid=1124834650/sr=8-2/ref=sr_8_xs_ap_i1_xgl14/103-1171476-7699058?v=glance&s=books&n=50784
tubes. I grew up with tubes because they were available for free when I
was a teenager. Discarded transistorized TVs showed up much later and
then I could lay my hands on hotrods like the AF126.
Audio tube amps presented in the electronic magazines were often a
disappointment. To me 10 or 20 watts wasn't anything to write home
about, we could build that with a few 2N3055 in those days. The monster
tube amps that some of us built had to be calculated from scratch. The
only reason the kilowatt range could hardly be cracked was that the
typical circuit in Europe had "only" about 15 amps. One chord on the
guitar and the lights went out.
Regards, Joerg
http://www.analogconsultants.com