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Anyone thought of using a standard audio power amp with say, +/- 50 supply rails?? Then a sine wave oscillator could simply be hooked up to drive it. Another idea would be to use a class-D audio

I used to work fixing stage-n-lighting light dimmers. We used oscilloscopes triggered by the incoming line AC. The output sine-wave never shifted left and right as dimming was varied. Just the

Much agreed. Those were the days of individual still able to get a lot of parts (no need to be a shop). Also when Auto emissions were not such a big deal (hotrod .... DIY Weber Carbs ... headers

I think we could be getting into a semantic war with this thing. So .... instead of my talking anymore ... please ... everyone open up the *.bmp attachment of this email. THIS .... is what I saw on

Got it. I'll try modifying future mail so you can see it. Curtis Dazzle Mom this coming Mother's Day season with flowers! http://www.flowerson55.com

Question: Why is the current waveform sinusodal despite the voltage output being non-sinusodal?? How are you measuring it?? I would think it'd

You're talkin' about the "Philidelphia Experiment" I think. A movie was made about it. It even has that name for a title. Curtis Dazzle Mom this coming Mother's Day season with

Hi Dough Hale, Do you have any experience to replace vacum tube with power MOSfet...??? Thank you

Is there a book on schematic symbols? I have schematics for a TI-99/4A and trying to create a circuit board using software from exprespcb (http://www.exprespcb.com [IIRC]).

Is there software that can convert schematics to a circuit board design? I have some schematics that I want to see if I can make a circuit board from (perhaps to 'recreate' the device that schematics

I'm glad to see some people joining and using the group. As you can see, things arn't exactly super busy yet, but spread the word, I'm sure we can get some discusion going, and thats what it's all

wrote: Yes, you can go into any radio shack and pick one up for about $5. Plus some ok basic electronic books.

Hi, I just joined this group. I was actually thinking of starting my own, but I found this one. I'm taking electronics classes and learning a lot, but have found very little tutorial information

So I'll just get right into it. I'm currently on transistor amplifiers. We haven't gotten to push-pull stuff yet, or any IC opamp stuff, so I'm sure my questions will be answered in class later.

Tavys Ashcroft wrote: Hi Tavys, Good to see you join. The groups a bit quite at the moment, so send as many people as you want this way, the more the merrier, And the more we will all

Dear Thomas, You can use BOARDMAKER Program to convert schematics to a circuit board. You must modify the board because it doesn't work properly and can't give the right answer. But it can give a

Where can I get BoardMaker? I found software from http://www.cadsoft.de/http://www.cadsoftusa.com that has a program called Eagle CAD. It was free for/to hobbiest. Have you heard about/know anything

Thanks for the information. They are also in the Radio Shack catalogue (I didn't think of looking until you posted your message). They might even have them at their web site (which

Hi Thomas, have been using EAGLE 4.01 light for quite some time. It is excellent, with extensive symbol libraries, together with DRAFTCAD from "http://www.illuminated.com.au", [not available in lighy

Hello everyone, I have created a website, called the Public Electronics Circuit Archive, where people can submit their own electronics circuits, designs and ideas for others to look at, build,