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Old 27th February 2001, 09:25 AM   #21
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And of course any old regulator + resistor can do the same thing with great precision and probably not all that good sound. I have seen some pretty good info on this on http://www.tubecad.com.
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Old 3rd March 2001, 06:48 PM   #22
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Default Buy it from Allied Electronics

These are the approximate prices I obtained from Allied. They are not exact, but I am posting early to enable others to get good prices as well.

IRFP240 -- $2.5
IRFP9240 (these are hard to get from IRF right now) $3.5
IRF610 -- $.5
IRF9610 -- $.65

Method of getting these prices:
1. Go to http://www.irf.com
2. Search for any part number such as IRFP240
3. Check out all the supplier links
4. If one co. has high prices on one part, you can usually haggle the offending part down to the normal level.

In my case, it could have been even cheaper, but I needed the parts now and had to go to those who had all parts in stock.

Now I have 50 of each type of output device and 30 of each type of input device. This should enable totally tight matching.
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Old 4th March 2001, 01:53 AM   #23
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I watch this with enormous interest ;-)

Petter, would you be able to e-mail me the Circuitmaker file for your X100. Neat toy and quite instructive for the non-EE types like me. I could draw it all again, but figured you probably wouldn't mind.

Thanks in advance. Mark
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Old 4th March 2001, 07:03 PM   #24
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Default Cirkuit maker file in my MSN site.

Go to the file area.
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Old 4th March 2001, 07:23 PM   #25
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Petter all this is incredible.
Very cool.
I got by the way a demo cd from circuit maker 2000.
It was a 30 day promo and I did something on the computer and now it says date expired.
This has nothing to do with this thread here, but can any body help with this.
There is some file saved somewhere and i canīt make the demo cd work anymore.
Anybody know a crack or something?
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Old 4th March 2001, 07:50 PM   #26
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Default Change date backwards does not work?????

Install your machine from scratch :-(

Borrow another disk and do it there

Install a dual boot should work

There is a Student demo which should work for this small circuit available for download as I recall without expiry.

Probably many other good fixes.

Good luck
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Old 5th March 2001, 12:37 AM   #27
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A very simple hack that often works (and doesn't involve decompiling the code, with all the attendant hassles & legal questions) is to simply set the date on your computer back a year or whatever.
Just remember to set it back to the present date when you're done.
Jason: Why can I sometimes see other posts...and sometimes not? Right now I can't, for instance.

Grey
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Old 5th March 2001, 12:45 AM   #28
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Actually changing the date doesn't work. CM specifically tells you this when you download the demo.

I'm still in the 30d trial period, so don't know if I will get around this, but I suspect they write to the registry on install, then each day simply decrement some counter (IF today <> yesterday THEN decrement turns_left). This is likely "invisible", ie hidden deep in the registry somewhere where it is not obvious = unlikely to be under a "CircuitMaker" key.

The student version is limited to 30 devices which eliminated all but the really simple circuits.

mark
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Old 5th March 2001, 03:05 AM   #29
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Bummer about the date trick. I no longer have the time to fiddle with reverse-engineering the code. My position these days is just not to mess with crippleware unless I absolutely have to. I don't suppose you could export it to the student version of Spice, could you? (Or some other version of emulator...)

Grey
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Old 5th March 2001, 11:09 AM   #30
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Well thanks to everybody. I just downloaded the students version of circuit maker and see what I can do with that. Petter good luck with your attempt to make this amp work. I think everybody is waiting for more on this.
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