fcel, Elma is a switch without resistors. You don't have to calculate the values, just use the ones from Pass D1.
Current source voltage reference
harvardian
The voltage reference for the curent source is five green LEDs in series. 5x1.8 volts gives 9.9 volts. These are biased by a 100k resistor to ground. Sorry for the confusion as the schematic was a Spice simulation drawing that I didn't redraw for exact parts.
harvardian
The voltage reference for the curent source is five green LEDs in series. 5x1.8 volts gives 9.9 volts. These are biased by a 100k resistor to ground. Sorry for the confusion as the schematic was a Spice simulation drawing that I didn't redraw for exact parts.
Thanks, I figured it out after posting. But always good to get a second opinion. I will try it out.
Dale
Dale
Re: I knew there was a nine in there somewhere
Well i dont drink alcohol and i never believed that story about getting drunk on coca cola so I should be fit for the job 😀
HarryHaller said:
Well i dont drink alcohol and i never believed that story about getting drunk on coca cola so I should be fit for the job 😀
Stereo Typing
You live in Oz and you don't drink beer? I don't drink either, but I still can't type. I usually can do math though....
H.H.
P.S. I believe that i is supposed to be capitalized.
You live in Oz and you don't drink beer? I don't drink either, but I still can't type. I usually can do math though....
H.H.
P.S. I believe that i is supposed to be capitalized.
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