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| constant current sink understanding (10-50mA) |
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Well thanks to anyone , i think i'll for now stick to transistor based circuit because i don't have jfet in stock, for the range of 10-50mA it means that the current sink should be able to sink up to 50ma , again my fault here because i wasn't clear enough. i'm not trying to make a super precise cc sink but if it is well...it's better, onestly i don't care as long as the drift is kept under a few mA. I don't want to sound rude but i knew that the cc source woudn't work with voltages that are too low, if i want it to work down to 0 i should have a negative rail right? i think i'm going to use a to220 or a SOT32 transistor for the 1.5W or so of power and leave it flappin' in the breeze, or maybe a sot223 with enough copper area By digging in the Art of electronics i found some cc sink/source, here they are not that i know how they are called i can google them and study them , thanks again :-+ |
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