Not true. Current limiting diodes will pass zero current when they have zero volts across them, such as when they are shorted out by an ammeter. To do otherwise would require an internal power source. Also, see Fig. 2 in this document.Your diode, a CLD or CRD as I learned them many years ago, will pass 1 ma regardless of applied voltage. Look at my drawing and A1 will be 1ma, A2 will be your electrolysis current, and A3 will be the same as A2 minus 1 ma.
Your diode, a CLD or CRD as I learned them
Hi kinarfi, I really appreciate your "on the subject" reply. I gather from what you are saying, that I am still missing components and that my approach is over simplified. I need to to limit current. I have a real issue that needs to be resolved soon. I have a unregulated source of 34.6 volts vdc. I have an anode and cathode. When the process begins, the current is almost dead @22-24 u. As the electrolyte becomes more conductive...the current rises. At six hours The current hits 1 mA. I NEED TO STOP THE CURRENT FROM HITTING 1.5 mA. The process is a "run away train" at this point. Mechanical stirring breaks the ion stream in the electrolyte allowing current control up to six hours. After this point, manual monitoring of the current avails nothing. Here is the kicker...I need to hold the process under 1.5mA for another 4 to six hours...preferably automatically. I have put all of this forth several times on this forum. But I have yet to encounter any help with designing a circuit that will do this simple task. I still believe a cld will work, but I don't know how to wire it. I know enough to know that the relevant values for circuit design are right here in this paragraph. If I am wrong, and you can help, please tell me what other values or numbers you would need. Again thank you for your reply. Plumber (to make straight)
Wow. I think we were very much trying to help you, but your rudeness and arrogance keeps getting in the way.
can someone kindly explain what I have done and why it works? I am trying to learn.View attachment 35046
I have a very, very simple solution to offer you. It will take a little trial and error, but it will work, at least I think it will.
I can do simple. Thank you for the silver platter! (just kidding!) I do appreciate you taking the time to help. I am learning about forums, to me, it has been the same question I posted a couple of months ago. But I realize no one links previous threads and posts. And people respond at various points along the way. Before this thread, I did try to ask how to. Some responses were way over my head, but mostly I grew impatient with the curiosity instead of answers. Enough of that. Trust me, I am less then a novice in electronics. But I can understand and follow your suggestions. Of course I'll be back, talking about switching and commutators and the like. I am sick of monitoring this thing. When I get big enough for my britches and I can actually understand the answers you guys are capable of giving, I will need help on how to build circuitry that senses the rapid rise in current, and automatically shunts,drains,gates,switches etc. the excess current to any where else besides the electrodes. Thanks again. plumber
I mean, the ultimate goal is to get the electrolyte conductivity to the point it will draw 1.5 mA of current, correct?
OK, here is a quick draw-up, hope it is easy to follow.
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?