After reading your other posts in this thread, I fully understand what you are saying. It's basically the difference between a switched power supply, and a...
... Actually, pulsed EDM does not necessarily have the high voltage pilot, but this is closer. In pulsed EDM, the energy is controlled electronically as it is...
Ok got it. Forgive me as I ramble because I'm not an EE, so I may be completely wrong. I guess the main advantage (over an RC type) is that through fine...
... Don't worry, I've been doing interfacing to electro-mechanical monstrosities for over 40 years now. ... That is only one. In the RC type, you can set the...
... I was thinking that a fast A/D converter (in the many mega sample mark) and let a DSP work it out afterwards. Might not be the most elegant solution but...
... You will need 4 or more megasamples/sec, two channels and a batch of analog logic in front with analog multiplication. You need to integrate power over...
I'm looking through my old printouts, but can' t find it currently. I found an analysis looking the effects on both the electrode and workpiece. What i...
... Phillips has been making 20 megasample 3 channel ADCs for close to 10 years now to service the digital video encoding market. Last time I got one they...
If a micro isn't fast enough, a cheap CPLD or FPGA will be fast enough if you pipeline functions. A micro coupled to a FPGA could cost under $20 for both and...
... Thanks for the input Aaron. I was actually considering using some programable logic just to do FFT and some other math intensive things so I could use a...
Hi everyone I am building Ben Fleming's EDM machine. Can anyone recommend a suitable submersible pump (or other) that can be purchased in the UK. I have looked...
... Great, how many bits wide? Got a part number? ... When I was assuming that really fast A/Ds were costly, I looked for a way to measure power, but with...
... They where triple 8 bit ADCs TDA87xx from memory. Just had a look at digikey with TDA as the search term. Can't find the old 3x8x20MS/s one that was sub ...
We might do better with a digitally monitored and controlled analog circuit. Use the A/D converter to provide a spark profile which is then analyzed and used...
Hi Guys, My first post, but I have been watching awhile since getting Ben's book. The electronics discussion by David G LeVine, Andrew M and others is way over...
I have in my possession a Sola Mini/Micro Computer Regulator. Model 63- 23-175-8. I am interested in utilizing its transformer as the power transformer in an...
Marv, that type of transformer is probably not a good idea due to the nature of the EDM circuit. For the EDM you want a RAW DC supply that can react to the...
Does a higher voltage cause the dielectric breakdown too fast? Is the actual energy delivered during the plasma formation lower? Albion. ... From: Rich Dean...
An excellent source of 600-1,000 watt transformers can be found in junked microwave transformers. The 110 and high voltage windings are always separate so...
... but I use an industrial EDM everyday and ... Hi Rich, We use an ancient EDM at work, with a "microfinishing unit" option (not fitted) - with an output of...
... Technical issue: The output of a transformer running from the power line should be a sine wave. The RMS (heating equivalent) voltage is usually what is...
Hi David, Your statement below is misleading. Peak to peak voltage is 2 * 1.414 * RMS. But a rectified and filtered DC supply should only be peak (1.414 *...
The higher the voltage, the rougher your edm cuts - bigger sparks, bigger bits of metal coming off, more wear on the electrode. The downside to impatience! ...
Can you elaborate on that 1.4 number for the capacitor? Is it always 1.4 or this that only when the cap is fully charged? ... junked ... winding and ... of...
My error. It is the square root of two. ... David G. LeVine Nashua, NH 03060 -- No virus found in this outgoing message. Checked by AVG Free Edition. ...
Hello group, Im now make a research about optimization for Ti alloy cutting. If anybody have opinion or want to shared some ideas, plz email me. So we can...
... The details aren't that hard, just costs a bit and takes some time.... For each amp setting your machine has, you make up a chart that includes each on and...
I agree Brian. I by trade am a Broadcast Audio Engineer and have no experience in machine shops other than visiting them for filming etc. I have spent many a...
Having problems with message search?
Fill out this form to ensure your group is one of the first to be migrated to the new message search system.
