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Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Originally they used simple voltage comparators to make a window comparator circuit. When the voltage was high the ram went down and when too low it goes up. The machines of today use a mcu of some kind to do that. The original rams were hydraulic and used something called a piddle valve to make...
My transformer will give after rectifying and a large cap have an open circuit voltage of ~98VDC, and then a bulk resistor will take the ~20A down to 15A. The transformer is a used one from a servo drive and I can't find any specs on it, the company went out of business. So then the...
Really not high precision but that comes from the electrode shape and size. The electromechanical drilling circuit is the basis of my design parameter. They use or the one we had used, pulsed cap discharge and they have a very similar spark size and amperage for each spark. That is what I'm...
OK, after looking quickly at the research gate paper, I see it's talking about Wire EDM, not sinker like I'm trying to make. Wire does use transistor type discharging, because the wire is moving so fast that it doesn't react like a sinker electrode. And that is why I couldn't find a spark gap in...
That''s how most of pulse EDM's shown on Youtube do it. But having used edm the sparks from the Youtube machines are nothing like ones from a real industrial machine. What I'm trying to make is what was used in my favorite machine to run,an Eltee Pulsetron. It didn't have on/off settings because...
That circuit was part of a college design by someone with no understanding of EDM. He nor anyone I've been able to find has ever built it. He used 300VDC as the open circuit voltage where every industrial machine I've ever seen or heard of only has ~100VDC as the open circuit voltage. But it...
Thanks for the link! But your quote above doesn't match up with the Falstad circuit. The Falstad circuit shows the resistor after the cap like my drawing 'B' showed.
I wish the Falstad circuit had the switch in a different place, so I could see what is happening at the output/discharge while...
That is my problem, I only want and need the charge stored in the cap, not the complete source voltage and amperage. Once the cap reaches a certain voltage a comparator will switch off a mosfet not shown, but shown as the battery.
The idea of the total circuit(not shown) is to make every...
I'm sorry, but when I had the battery, I assumed the negative pole of it would suffice. That link is one of many I read, and it still didn't answer my second question, is there a voltage out of the circuit with respect to ground before the cap is fully, 5 time constants charged?
Never designed a circuit before but do know how to Google. Have tried to find my answers with no success, so here goes.
In the illustration is there a difference in the result on how the circuit is made? I'd like to keep the resistor out of the output path of the cap, or caps, since this will...
I know it would, but it seemed too complicated and would mean making a larger board, if a isolated DC-DC converter would work the board could be smaller.
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