My pulses are from 1 PP/s to around50, but I've tried up to 5 K. My circuitry isn't exactly state-of-the-art, and I'm lacking an 'O' scope so I'm not confident about the shapes of the (important) leading-edges of my pulses, so I go for relays to drive the base/gate current/voltage.
I want to incorporate a schmitt trigger to one of my astable m/v as soon as I'm confident they'll work. Y'see I know the relays give me a near-perfect square wave, and this is the most important part of the process as far as I can see ... ie... a good whack, especially on the leading edge - I suppose the trailing edge could be a slope providing it approaches zero before the next pulse.
The transformers I use now are arbitrarily 'large.' I have a small bench-top type welding transformer on one pulser with the 90 A transistor array and I can see I'll never have to worry about it cooking, and it delivers whatever current I want. (The small ones will work, but it takes more time). On a 12 V battery I have found that the higher the voltage the better. The pulser with the lowest V in the pulses would read around 18.
The transformers I use these days charge the cap bank to at least 30 V, and one will go up to a shade over 50 V. (Things get a bit tense with the high voltage for me). Sometimes I think the pulses from a large T through a/c transistor blocks could be used to start a nuclear reaction - I mean it's a heck of a whack which will melt the terminals if the clips aren't tight - Visions of escaping gas being ignited by poorly clamped clips are something never far from my thoughts. (Did I just wake-up ECHELON)?
And as I'm not very familiar with electronics, but learning it by experiment and from the internet I tend to make my circuits in blocks with their own power supplies and potentionmeters in-between to get things running without overloading them.
It's a bit primitive, but it is simple to understand from a glance if something is wrong, and it affords me a clear view of what each bit is doing so if anything unexpected occurs I can usually easily find where it requires attention.
ie. The pulser I've just finished has three transformers. one is to charge the caps, another to power the m/v, with another leg off regulating the V to the relay, and the third T is dedicated to the base/gate supply. I think I could do it with only two transformers by doing away with the T for the base V. I just did it that way because I'm always worried about keeping the base/gate V as stable and controllable as possible. I'll dispense with it as soon as I am confident. (Getting itchy fingers these days).
But I like to keep the caps on one T. I don't think I'll try to run everything on one large transformer owing to the widely varying V from the pulses, and using an IC voltage regulator near its rated maximum is a recipe for disaster. (I like things cool).
* Actually RR I sent you an email but never got a reply. If you can help then say what you want on these threads of mine. I started here on batteries a bit over a year ago and at that time I was so ignorant I was sticking metal screwdrivers through the plates wondering what they did!
I also tried simply adjusting the acid so it appeared to be good. I've learnt quite a lot since then.
From my own experiments and from researching on the 'net, and from listening to various people here, I have now found a reliable way to desulphate batteries of any size, and from the information I have collated it is possible for anyone with minimal parts and minimal experience to replicate what I have done.
I did this mostly because I want to help people to save money (Myself obviously included). And because a lot ot the information on the internet is confusing and often just plain wrong. So I've read a lot of what's out there and eventually found my own way of doing it. And it works!!!!!!!!!! I sifted through the chaff and got to the heart of the matter.
I'm not done yet. Now I can reliably desulphate a battery I will continue my experiments and observations.
So what is it that you want to add to the discussion RR?
