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Back in the 70's, Electronics Australia published a kit design for a
Musicolour 3. I have one that has ceased to work. Has anyone got a
copy of the original circuit and circuit notes? Would appreciate a
copy.
I read in the current issue SC that a new Musicolour project is cominggsmit...@gmail.com
Back in the 70's, Electronics Australia published a kit design for a
Musicolour 3. I have one that has ceased to work. Has anyone got a
copy of the original circuit and circuit notes? Would appreciate a
copy.
** That could be the one published in the December 1971 issue, with PCB
labelled as " 71C12 " - OR it could be the one in September 1976, with
PCB labelled as "76PC9 ".
...... Phil
Sounds about right.On May 13, 12:25 pm, "Phil Allison" <philalli...@tpg.com.au> wrote:
gsmit...@gmail.com
Back in the 70's, Electronics Australia published a kit design for a
Musicolour 3. I have one that has ceased to work. Has anyone got a
copy of the original circuit and circuit notes? Would appreciate a
copy.
** That could be the one published in the December 1971 issue, with PCB
labelled as " 71C12 " - OR it could be the one in September 1976, with
PCB labelled as "76PC9 ".
...... Phil
I read in the current issue SC that a new Musicolour project is coming
in the next month or two, using a dsPIC.
I wonder, would the Musicolour be the longest running and most updated
Aus magazine project?
Dave.
I wonder, would the Musicolour be the longest running and most updated
Aus magazine project?
IIRC, they were switching the neutral to the load, so the lamp was floating at"David L. Jones"
I wonder, would the Musicolour be the longest running and most updated
Aus magazine project?
** I wonder if there is ANY other project published by EA , SC or ETI
that is KNOWN to have caused the death of a constructor after it was sold
to them as a kit by DSE ??
WARNING:
If ever you construct or attempt to service one of the several " Musicolour
" projects - make ABSOLUTELY CERTAIN you have a ELCB or " Safety
Switch " in line within the AC supply to the unit whenever the lid is off.
Or you may become the second, known fatality in Australia.
...... Phil
Phil Allison wrote:
"David L. Jones"
I wonder, would the Musicolour be the longest running and most updated
Aus magazine project?
** I wonder if there is ANY other project published by EA , SC or ETI
that is KNOWN to have caused the death of a constructor after it was
sold to them as a kit by DSE ??
WARNING:
If ever you construct or attempt to service one of the several "
Musicolour " projects - make ABSOLUTELY CERTAIN you have a ELCB or
" Safety Switch " in line within the AC supply to the unit whenever the
lid is off.
Or you may become the second, known fatality in Australia.
IIRC, they were switching the neutral to the load, so the lamp was
floating at mains voltage, even when 'off'.
This one is all FFT apparently, guess it allows you to do lots ofDavid L. Jones wrote:
On May 13, 12:25 pm, "Phil Allison" <philalli...@tpg.com.au> wrote:
gsmit...@gmail.com
Back in the 70's, Electronics Australia published a kit design for a
Musicolour 3. I have one that has ceased to work. Has anyone got a
copy of the original circuit and circuit notes? Would appreciate a
copy.
** That could be the one published in the December 1971 issue, with PCB
labelled as " 71C12 " - OR it could be the one in September 1976, with
PCB labelled as "76PC9 ".
...... Phil
I read in the current issue SC that a new Musicolour project is coming
in the next month or two, using a dsPIC.
Sounds about right.
Why not use a DSP/Microcontroller when a few opamps will do?
Probably means they can keep the code a secret and sell pre-programmed devices...
IIRC, they were switching the neutral to the load, so the lamp was
floating at mains voltage, even when 'off'.
** No - the active was switched
Which mean all the heatsinks on the triacs were permanently at 240 volts
AC.
I found Discolitez to be great piece of kit.On May 13, 4:11 pm, swanny
blahgswan3b...@blahbigpondblah.comblah.blahau> wrote:
David L. Jones wrote:
On May 13, 12:25 pm, "Phil Allison" <philalli...@tpg.com.au> wrote:
gsmit...@gmail.com
Back in the 70's, Electronics Australia published a kit design for a
Musicolour 3. I have one that has ceased to work. Has anyone got a
copy of the original circuit and circuit notes? Would appreciate a
copy.
** That could be the one published in the December 1971 issue, with PCB
labelled as " 71C12 " - OR it could be the one in September 1976, with
PCB labelled as "76PC9 ".
...... Phil
I read in the current issue SC that a new Musicolour project is coming
in the next month or two, using a dsPIC.
Sounds about right.
Why not use a DSP/Microcontroller when a few opamps will do?
Probably means they can keep the code a secret and sell pre-programmed devices...
This one is all FFT apparently, guess it allows you to do lots of
fancy stuff?
Hence the dsPIC programmer in this months SC.
If it's an actual SC project then the source code should be available.
Dave.
"Phil Allison"
IIRC, they were switching the neutral to the load, so the lamp was
floating at mains voltage, even when 'off'.
** No - the active was switched
Which mean all the heatsinks on the triacs were permanently at 240 volts
AC.
** Or I should have said the COMMON heatsink was at 240V AC.
... Phil
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