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Old 08-27-2011, 09:13 PM #1
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Default Circuit simulator

Ive stumbled across a circuit simulator while on my quest to understand how to build a dang driver.

(I would just ask "Help me build X to power X at X" but I dont want to look like someone who doesn't search )

Circuit Simulator Applet

But yeah.

Im just fiddling around with adding componants of different values..and it simulates the result. you can insert a current source..pop in some resistors..capaciters...pots...and check out the resulting values and change values for componants.


Only bad thing is it doesn't seem to have regulators..anywhere..

But I thought this might be useful to some of you which is why I wanted to post its own thread. While a good majority of you are skilled enough to figure things out, componants cost money! and so does trial and error.



Last edited by ChukiDori; 08-27-2011 at 10:18 PM.
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Old 08-28-2011, 06:59 PM #2
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Default Re: Circuit simulator

This applet is indeed quite nice. If you want to get a better understanding of, lets say linear drivers then try to create an op-amp current source with it. It is a nice exercise and the results are quite ok for such a simple applet.
If you want something more elaborate, then take a look at LTSpice. It has a lot of regulator ICs that come with it. Only downside, it is from Linear Technology, so the choice in the integrated circuits is more or less restricted to their products. Give it a try, I like it.
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Old 08-28-2011, 07:49 PM #3
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Default Re: Circuit simulator

Very cool. I tried playing with it a bit last night, but yeah. No regulators. Pretty neat to see how everything works together though. I'ma check out LTSpice too.
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Old 08-29-2011, 12:15 PM #4
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Default Re: Circuit simulator

I use a program called National Instruments Multisim 11

here's a quick test load, driver and battery i whipped up for a IR driver i was building.

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Last edited by Fiddy; 08-29-2011 at 12:16 PM.
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Old 08-30-2011, 10:25 PM #5
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Default Re: Circuit simulator

Quote:
Originally Posted by Ghostchrome View Post
Very cool. I tried playing with it a bit last night, but yeah. No regulators. Pretty neat to see how everything works together though. I'ma check out LTSpice too.
Arg! LTSpice doesn't list any voltage regulators like the LM317 in their program.

Quote:
Originally Posted by Fiddy View Post
I use a program called National Instruments Multisim 11

here's a quick test load, driver and battery i whipped up for a IR driver i was building.
There's a free limited trial version of National Instruments Multisim 11 that I can try.

I simulator for free damnit!

Last edited by Ghostchrome; 08-30-2011 at 10:25 PM.
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Old 08-31-2011, 04:47 AM #6
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Default Re: Circuit simulator

haha fair enough, if you are smart you can download a torrent with the full cracked version
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Old 08-31-2011, 10:48 AM #7
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Default Re: Circuit simulator

Quote:
Originally Posted by Ghostchrome View Post
Arg! LTSpice doesn't list any voltage regulators like the LM317 in their program.
Not true. There is a bunch of regulators available in LTSpice. I have recently used the LT3083 for a lab power supply and it worked nicely. There are even buck and boost drivers that come with LTSpice.
__________________
MY TOYS:
0.5mw 632.8 nm HeNe [my first DIY laser built in 1993]
LPC-815: 275mW@417mA, TS1085 diy driver, 2xCR2, AR PMMA lens in odicforce host [reviewed here]
LPC-826: 250mW@417mA, LM1085 diy driver, 2xCR123A, 3-element glass lens, Aurora C6, copper heat sink [see it here]
GGW-red: 180mW@370mA, TS1085 diy driver, 2x10440, 3-element glass lens in Blue M host
several 650 nm modules in the lower mw range

True 50mw 532 nm pen from PriceAngels [56mW]
532 nm pen from odicforce [38mW]
532 nm shorty pen [modded, 80mW +20mW IR]
A140: 1100mW@1100mA, MIC29152 diy linear Driver, 2xCR123A, 3-element glass lens, Aurora C6, copper heat sink[here]
GGW-H20L: 140mW@170mA, boost driver, 3xAAA NiMh, 3-element lens, Blue M host
GGW-IR: 90mW@150mA, diy driver, in o-like module
LPC-815: 80mW@150mA,
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Old 08-31-2011, 04:19 PM #8
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Default Re: Circuit simulator

Quote:
Originally Posted by chefla View Post
Not true. There is a bunch of regulators available in LTSpice. I have recently used the LT3083 for a lab power supply and it worked nicely. There are even buck and boost drivers that come with LTSpice.
Yeah, I saw some of those on there. I'm not really familar with them as the LM317 is the only one I've really worked with so far for building laser drivers. Ok, I'll try goofing around with a few of the others.

Thanks.
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Old 08-31-2011, 06:00 PM #9
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Default Re: Circuit simulator

Try the LT1085. It is 100% pin compatible to the LM317 and has a lower drop out voltage. If you like it compare the data sheets. But, I would not use the LM317 anyway. There are far better ICs out there...
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MY TOYS:
0.5mw 632.8 nm HeNe [my first DIY laser built in 1993]
LPC-815: 275mW@417mA, TS1085 diy driver, 2xCR2, AR PMMA lens in odicforce host [reviewed here]
LPC-826: 250mW@417mA, LM1085 diy driver, 2xCR123A, 3-element glass lens, Aurora C6, copper heat sink [see it here]
GGW-red: 180mW@370mA, TS1085 diy driver, 2x10440, 3-element glass lens in Blue M host
several 650 nm modules in the lower mw range

True 50mw 532 nm pen from PriceAngels [56mW]
532 nm pen from odicforce [38mW]
532 nm shorty pen [modded, 80mW +20mW IR]
A140: 1100mW@1100mA, MIC29152 diy linear Driver, 2xCR123A, 3-element glass lens, Aurora C6, copper heat sink[here]
GGW-H20L: 140mW@170mA, boost driver, 3xAAA NiMh, 3-element lens, Blue M host
GGW-IR: 90mW@150mA, diy driver, in o-like module
LPC-815: 80mW@150mA,
diy driver, in o-like module
LaserBee 2.5W USB
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Old 08-31-2011, 06:53 PM #10
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Default Re: Circuit simulator

Sweet! Thanks, bro.
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