Tagged Questions
6
votes
4answers
168 views
Detect “real” overcurrent/short-circuits vs. current peaks
We have a MOSFET that drives a load. The load has a sense resistor in its current path and its voltage is used to trigger a circuit that can disconnect the load if we detect an over current ...
2
votes
1answer
137 views
Voltage regulator with op amp(negative feedback) and MOSFET
The schematic above is a very good voltage regulator, excepting the high power dissipation for Q1 (also I'd use an NPN instead of a PNP). Can I replace Q1 and Q2 with a high current n-mosfet and ...
6
votes
5answers
212 views
OP amps with output on N-channel MOSFET
I need to analyze a schematic and I am having trouble with this part:
The thing is I don't get at all the utility of the N-channel MOSFET at the output of the op-amp. Could anyone explain the ...
2
votes
3answers
420 views
MOSFET - OPAMP circuit
I was looking for a voltage controlled current source see here , and I stumbled upon this circuit with description here :
Now I am having difficulty figuring out how this works - I made a model of ...
1
vote
3answers
2k views
Voltage controlled current source
Here is a circuit that seems to work pretty well for allowing a voltage to control a current of up to maybe two amps.
It works on the falstad simulator (the triangle wave voltage input produces an ...
