Dan Armstrong Schems

markm · July 27, 2007, 05:43:25 PM

Here's a link for your reading enjoyment.
Looks like Original Dan Armstrong schems plus Mustronics schems.

http://www.geocities.com/dbalde.geo/musitronics.html

To all interested, Enjoy!

GREEN FUZ · July 27, 2007, 06:00:29 PM

Sorry, this GeoCities site is currently unavailable.
The GeoCities web site you were trying to view has temporarily exceeded its data transfer limit. Please try again later.

markm · July 27, 2007, 06:36:46 PM

I guess it couldn't handle it!
Or, the circuit Sheriff is a quicker draw than I thought!

markm · July 27, 2007, 06:43:02 PM

Ha Ha!!
It's back!

GREEN FUZ · July 27, 2007, 06:45:00 PM

It`s alright, I`ve got `em now. All tucked up safely on my harddrive. Hehhehheh.

96ecss · July 27, 2007, 07:36:52 PM

Mark, I really don't think you should have posted that link. If enough people see those schems, Dan Armstrong might go out of business. I'll have to check Ebay in a couple of weeks to see all the Dan Armstrong clones that are gonna pop up now.

Dave

bioroids · July 28, 2007, 12:02:33 AM

Quote from: markm on July 27, 2007, 06:36:46 PM
I guess it couldn't handle it!
Or, the circuit Sheriff is a quicker draw than I thought!

Is just the allocated bandwidth for a free Geocities account running out of gas

markm · July 28, 2007, 06:32:52 AM

Quote from: 96ecss on July 27, 2007, 07:36:52 PM
Mark, I really don't think you should have posted that link. If enough people see those schems, Dan Armstrong might go out of business. I'll have to check Ebay in a couple of weeks to see all the Dan Armstrong clones that are gonna pop up now.

Dave

9 volts · July 28, 2007, 10:05:14 AM

...........no diodes in the green ringer.......what does this mean?

GREEN FUZ · July 28, 2007, 10:16:11 AM

Not sure but there seems to be a component marked #0820 where the diodes ought to be.

petemoore · July 28, 2007, 10:17:22 AM

I get "Sorry Blah Blah...un-available"

96ecss · July 28, 2007, 10:27:37 AM

Quote from: petemoore on July 28, 2007, 10:17:22 AM
I get "Sorry Blah Blah...un-available"

It comes and goes, you just have to keep trying. It eventually will work.

GREEN FUZ · July 29, 2007, 03:03:43 AM

Quote from: 9 volts on July 28, 2007, 10:05:14 AM
...........no diodes in the green ringer.......what does this mean?

This was posted on another thread about the green ringer.

http://www.freeinfosociety.com/electronics/schematics/audio/greenringer.pdf

I believe it explains what the mystery component is.

It reminded me of having read before that you can use leaky germanium transistors as diodes. There are various threads relating to this but if I remember correctly I first saw it on R.G Keen`s site.

markm · July 29, 2007, 07:56:14 AM

I may be mistaken here but, I think many moons ago, there was a Diode, perhaps even a Dual Diode available in
the TO-92 package. I've see some and I think I have some salvaged from somewhere but, I'm not sure.

Bernardduur · July 29, 2007, 08:00:08 AM

Aren't all transistors dual diodes?

R.G. · July 29, 2007, 08:40:26 AM

Quote...........no diodes in the green ringer.......what does this mean?

It means that there is no component specifically packaged as a diode there. There are parts used as diodes.

QuoteI may be mistaken here but, I think many moons ago, there was a Diode, perhaps even a Dual Diode available in
the TO-92 package.

You're correct, there were such. But that's not what this is.

QuoteAren't all transistors dual diodes?

In one sense, yes. However, if the circuit sets them up correctly, you get transistor action. That does not happen with two discrete diodes hooked together.

The GR is set up so that you can use a transistor as a dual diode or two actual diodes.

markm · July 29, 2007, 10:24:28 AM

So, this must be the schem with the "mystery" transistor in it that no one seemed to know what it was right?
The colors must designate C-B-E I would assume.

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Dan Armstrong Schems