... Yes, this part suggests the battery may play a dominant role. ... The battery resonating makes sense, but how this 'breaks up' the crystals is unclear to...
Andy, So far my testing of 4 different circuits types suggests that the HV pulse seen across the battery is not solely related to an inductor used in the...
Ed, you are going strictly by Faraday's law that works on paper on an ideal model. If you have ever done any real design work on this kind of stuff then you...
Hello all, I just got the board Bill built me based on Andy's design (resistive pulsar)...It happen to hit me during a crazy time (deploying a firewall and a...
OK, I'm not here to start an argument, and agree that in a switch opening it is indeed the fast current cut that induces a high voltage. That said; since the...
... That's not correct Bill. It is the discharge of the inductor that produces the overvoltage spike. The formula calculates the spike produced by the inductor...
I'm interested in testing desulfator circuits. I work as an equipment mechanic so have access to various types of batteries from small battery backup...
... You apparently missed my point which has little to do with the common and well known formula above. Your V and my V are different so you are arguing a...
... Over the years I've posted test results in the other desulfator group. So have others. ... Your choice. ... V = L di/dt is not presumption. ... Bill, it is...
I just cranked the pulse width up to 6us. This gives a "measured" peak current through the inductor of 12 amps. The current waveform shows no signs of...
Ed, If you have done all this testing, then where is the data ? I am not willing to search a defunct newsgroup with a grumpy owner for piecemeal data that is...
... A lot of similar testing has been done over the years - read the other desulfator group entries. I've done it myself, numerous times. In fact, I have a...
... ONLY from 0 - 2.2us. This correlates to a peak current through the inductor from 0 - 4.5 amps. ... of the overvoltage pulse any further. However it does...
A thought, since the resistive approach causes kick-back; maybe the battery plays a major role, and it is not just a metter of how hard the inductor can inject...
... Hmmm...that pulse amplitude limitation is very interesting! It brings up a bunch of questions. You say that increasing current through the inductor beyond...
... Let me add to this for the sake of additional clarity. The over voltage pulse height varies with pulse width to the FET ONLY from 0 - 2.2us. This...
... It does if you want to maintain the same average current in the circuit. But to be real clear so that no one jumps to errant conclusions ... The pulse...
Makes a lot of sense. I had imagined that the higher frequency might have pushed you to reduce the pulse width. ... A. Shiekh, Ph.D., ARCS, ACGI Physics,...
I have just completed a prototype circuit board of a 10Khz Couper type desulfator. It appears to be working very well. It is loosely based upon Alasair...
http://www.maplesoft.com/blog/view.aspx?sid=34139&P=TC-1329 "It turns out that the voltage measured at the terminals of a battery is extremely nonlinear and...
Excellent, I look fwd to starting testing.... Bill wrote: Hi, I have completed the resistive type board that I promised to send to Derek. It will go into the...
Hi, I have completed the resistive type board that I promised to send to Derek. It will go into the mail tomorrow for Derek to do some systematic/methodical...
Based on Bill's Improved PFET Couper desulfator, I put together an NFET version. To me, it looks pretty good. I've posted a couple of PDF pages in the Files...
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