FiberGeek.....I need help with your VCCS schematic
Hello FiberGeek,
I am building a VCCS from your schematics. I would like to ask a few questions, if I may.
I understand that the MOSFETS need to have their grounds isolated from the main circuit but should they also be isolated from each other?
Reason asking is that I have a long heatsink with a fan already mounted on it that would work nicely for the three TO-220's.
In the same line of thought, I purchased three .1 ohm 50 watt aluminum housed resistors that are connected to the "sink" leg of the TO-220's. Would there be any advantage to heatsinking these also? or could they be mounted directly to the circuit board? ( board is a "hobby" board from Radio Shack.)
Final question.....
On the schematic, the LM336BZ-2.5 ( labeled VR-1) does not have a connection on its 3rd leg. Does this get isolated from the circuit or is it to be connected to somewhere in the circuit?
Since I don't understand much about how the VCCS actually works, I do appreciate your help.
Thank you,
Dan
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