[General] Reading MOSFET parameters through Microcontroller

[Solstice]

Dear All!
I want to make some sort of study board for my high school students in college. The aim is to make a micro-controller based learning board with a header on which the student can put any general purpose MOSFET. The controller should be able to read the basic parameters of MOSFET, like, determine the topology (NPN or PNP) and able to draw I/V characteristics, gain etc... I need your kind guidance in finding how to read these parameters using a microcontroller?

-> If we restrict our project to TTL compatible MOSFETs, then, how to make I/V curve without much of hardware stuff? Should i use some low-level DAC to supply Vcc to MOSFET from 0-5volts, and use controller's ADC to read the output?

thanks for your valuable comments in advance,
Regards

 

[D.A.(Tony)Stewart]

Sounds good. Using an X-Y scope with autoscale the VI response would look pretty rectangular until the speed increases and load current increases to show switching capacitance effects on gate current and why low drive impedance is important.


This site has lots of training boards.

 

[Solstice]

Sounds good. Using an X-Y scope with autoscale the VI response would look pretty rectangular until the speed increases and load current increases to show switching capacitance effects on gate current and why low drive impedance is important.


This site has lots of training boards.

Thanks a lot for your kind feedback...

Yes, it would make it a complete demonstration, and i had thought of it too...
But my query still remains the same... how to calculate the parameters of a MOSFET using microcontroller? Should i use external/internal ADC/DACs for such design or is there any eval board or some other efficient design?

 

[D.A.(Tony)Stewart]

I don't know any kits except the fun kits I linked. A 100mV current shunt and 4020clock with jumpers to binary clock out for logic level Mosfets, is all would use with a good DSO.