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Forums
4hv.org :: Forums :: General Science and Electronics
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Beginner Schematics

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twist2b
Thu May 21 2009, 05:39PM
twist2b Registered Member #2086 Joined: Tue Apr 21 2009, 02:33AM
Location:
Posts: 117
Uzzors wrote ...

You might find this fun. Link2
I LOVE THIS!!! Thasnks for posting it :P

I never knew you could use a 555 timer as a pulse width modulator!
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PerksPlus
Fri May 22 2009, 10:58AM
PerksPlus Registered Member #2084 Joined: Sun Apr 19 2009, 04:31AM
Location:
Posts: 11
Thanks a bunch, that app will keep me busy until I can get a kit.
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Myke
Fri May 22 2009, 11:37PM
Myke Registered Member #540 Joined: Mon Feb 19 2007, 07:49PM
Location: MIT
Posts: 969
Yeah, It's a really cool java applet. I've used it for simulating circuits where I didn't know exactly what was going on. It also helped me find out how some basic building blocks worked. Sometimes it's a bit confusing as to what's the phasing on some lines. I've tried to simulate a triode oscillator and it didn't work out too well. I guess it's just the limitations of what the applet can handle.
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Proud Mary
Sat May 23 2009, 03:31AM
Proud Mary Registered Member #543 Joined: Tue Feb 20 2007, 04:26PM
Location: UK
Posts: 4992
May I suggest that you learn the symbols as you learn about the behaviour and properties of the the things they represent?

Junior student, or senior scientist, all will do the basic calculation

I = V/R

in one form or another, every day of their working lives, over and over, so long as they live.

As you learn about resistors in series, and resistors in parallel, make sure you draw out the circuits by hand, with notes about voltage and current at each node.

One day, through frequent drawing by hand of circuit elements as I have suggested, you will learn how to recognise the basic properties of any circuit you care to look at.

We are talking about the discipline of engineering here, and there is no quick route to competence.

What are the rewards of this painstaking approach for the hobbyist? You'll be able to design your own circuits, knowing the function of each and every component, instead of copying the ideas of better men.







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KLH
Tue May 26 2009, 01:08PM
KLH Registered Member #1819 Joined: Thu Nov 20 2008, 04:05PM
Location:
Posts: 137
A VERY GOOD circuit simulator is Linear Technology's SwCAD III. It's specialized for switching power supply simulation, but it can simulate a large variety of analog and even digital circuits. In addition, it's FREE for download, and it has no component or matrix size limit. I use it all the time to simulate that newest capacitor charger or power conversion circuit that I won't have the time or money to build...
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