What is the aux DC output on the quad 33 rated at and what was it intended
to power? I'm just interested and wondering if if could feed a headphone
amp...

--
Mick
http://www.nascom.info for Nascom & Gemini information
Also at http://www.mixtel.co.uk where the collection started.
Currently deserting M$ for linux... :-)

In article ,
Form@C wrote:
What is the aux DC output on the quad 33 rated at and what was it
intended to power? I'm just interested and wondering if if could feed a
headphone amp...

I'd say probably to switch a relay which handled the mains on a high
powered amp - the switched mains outlet from the 33 is pretty weedy.

--
*If a pig loses its voice, is it disgruntled?

Dave Plowman London SW 12
RIP Acorn

In article ,
Form@C wrote:
What is the aux DC output on the quad 33 rated at and what was it
intended to power? I'm just interested and wondering if if could feed a
headphone amp...

I'd say probably to switch a relay which handled the mains on a high
powered amp - the switched mains outlet from the 33 is pretty weedy.

--
*If a pig loses its voice, is it disgruntled?

Dave Plowman London SW 12
RIP Acorn

On Sat, 13 Dec 2003 13:36:39 +0000, Dave Plowman wrote:

In article ,
Form@C wrote:
What is the aux DC output on the quad 33 rated at and what was it
intended to power? I'm just interested and wondering if if could feed a
headphone amp...

I'd say probably to switch a relay which handled the mains on a high
powered amp - the switched mains outlet from the 33 is pretty weedy.

mmm... good idea - I hadn't thought of that! It doesn't do anything in
the 303 though, so they may have been thinking of more power at some time.
It's only half-wave rectified, which makes sense for a relay.

--
Mick
http://www.nascom.info for Nascom & Gemini information
Also at http://www.mixtel.co.uk where the collection started.
Currently deserting M$ for linux... :-)

On Sat, 13 Dec 2003 13:36:39 +0000, Dave Plowman wrote:

In article ,
Form@C wrote:
What is the aux DC output on the quad 33 rated at and what was it
intended to power? I'm just interested and wondering if if could feed a
headphone amp...

I'd say probably to switch a relay which handled the mains on a high
powered amp - the switched mains outlet from the 33 is pretty weedy.

mmm... good idea - I hadn't thought of that! It doesn't do anything in
the 303 though, so they may have been thinking of more power at some time.
It's only half-wave rectified, which makes sense for a relay.

--
Mick
http://www.nascom.info for Nascom & Gemini information
Also at http://www.mixtel.co.uk where the collection started.
Currently deserting M$ for linux... :-)

In article ,
Form@C wrote:
What is the aux DC output on the quad 33 rated at and what was it
intended to power? I'm just interested and wondering if if could feed
a headphone amp...

I'd say probably to switch a relay which handled the mains on a high
powered amp - the switched mains outlet from the 33 is pretty weedy.

mmm... good idea - I hadn't thought of that! It doesn't do anything in
the 303 though, so they may have been thinking of more power at some
time.

Well, Quad stuff was often used (modified or altered) for pro work, and I
seem to remember reading that was what it was provided for.

It's only half-wave rectified, which makes sense for a relay.

Yes, and IIRC only 100 µF of smoothing - so not designed for much in the
way of 'audio use' current.

--
*Always drink upstream from the herd *

Dave Plowman London SW 12
RIP Acorn

In article ,
Form@C wrote:
What is the aux DC output on the quad 33 rated at and what was it
intended to power? I'm just interested and wondering if if could feed
a headphone amp...

I'd say probably to switch a relay which handled the mains on a high
powered amp - the switched mains outlet from the 33 is pretty weedy.

mmm... good idea - I hadn't thought of that! It doesn't do anything in
the 303 though, so they may have been thinking of more power at some
time.

Well, Quad stuff was often used (modified or altered) for pro work, and I
seem to remember reading that was what it was provided for.

It's only half-wave rectified, which makes sense for a relay.

Yes, and IIRC only 100 µF of smoothing - so not designed for much in the
way of 'audio use' current.

--
*Always drink upstream from the herd *

Dave Plowman London SW 12
RIP Acorn

"Form@C" wrote in message
news
What is the aux DC output on the quad 33 rated at and what was it intended
to power? I'm just interested and wondering if if could feed a headphone
amp...

--
Mick
http://www.nascom.info for Nascom & Gemini information
Also at http://www.mixtel.co.uk where the collection started.
Currently deserting M$ for linux... :-)


From the Quad 33 Service Manual......" The DC supply provided on pin 4 of
the output plug, derived from diode MR503, is used only as switching supply
for special installations. Its regulation is poor and it is nominally 7-8
volts at 1 milliamp maximum, intermittent rating."

It was discontinued at S/N 80,000.

"Form@C" wrote in message
news
What is the aux DC output on the quad 33 rated at and what was it intended
to power? I'm just interested and wondering if if could feed a headphone
amp...

--
Mick
http://www.nascom.info for Nascom & Gemini information
Also at http://www.mixtel.co.uk where the collection started.
Currently deserting M$ for linux... :-)


From the Quad 33 Service Manual......" The DC supply provided on pin 4 of
the output plug, derived from diode MR503, is used only as switching supply
for special installations. Its regulation is poor and it is nominally 7-8
volts at 1 milliamp maximum, intermittent rating."

It was discontinued at S/N 80,000.

On Sun, 14 Dec 2003 09:44:19 +1300, Mike Coatham wrote:

snip

From the Quad 33 Service Manual......" The DC supply provided on pin 4 of
the output plug, derived from diode MR503, is used only as switching supply
for special installations. Its regulation is poor and it is nominally 7-8
volts at 1 milliamp maximum, intermittent rating."

It was discontinued at S/N 80,000.


Excellent! Thanks very much. Looks like its certainly no good for a
headphone amp then - never mind!
(This is S/N 57751 by the way, getting on a bit - like me... :-) )

--
Mick
http://www.nascom.info for Nascom & Gemini information
Also at http://www.mixtel.co.uk where the collection started.
Currently deserting M$ for linux... :-)