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tenso Junior Member Offline Posts: 30 USA	help solving short circuit current Aug 06^th, 2016, 7:50pm Can someone help me figure out how the calculated the short circuit norton current looking into the source node in figure 2 circuit 8 of the article? http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6841782 I am having trouble understanding how the current was divided between ro and Rd
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rajasekhar

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Re: help solving short circuit current
Reply #1 - Aug 10^th, 2016, 1:53am

HI-
When you apply deltaV at the gate, since you have shorted source you will gm*deltav flowing into the transistor, This will be divided and flow into rO and rD, so find current flowing into Rd which is gm*Ro*deltaV/(R0+Rd).

Please note that short circuit current is same as current flowing through Rd.

If you don't understand this please use simple KVL and KCL, you will the same answer.

Best Regards,
Raj.

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tenso

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Re: help solving short circuit current
Reply #2 - Aug 11^th, 2016, 12:02am

rajasekhar wrote on Aug 10^th, 2016, 1:53am:

HI-
When you apply deltaV at the gate, since you have shorted source you will gm*deltav flowing into the transistor, This will be divided and flow into rO and rD, so find current flowing into Rd which is gm*Ro*deltaV/(R0+Rd).

Please note that short circuit current is same as current flowing through Rd.

If you don't understand this please use simple KVL and KCL, you will the same answer.

Best Regards,
Raj.

Thanks for the help Raj, I get it now.

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