Electronic Devices - PNPN - Discussion

Discussion :: PNPN - General Questions (Q.No.21)

21. 

This is an example of a high-isolation ________ gate.

[A]. OR
[B]. NOT
[C]. AND
[D]. NAND

Answer: Option C

Explanation:

No answer description available for this question.

Sanjay said: (Dec 29, 2016)  
A ON B ON.

A=1=B

A OPTOCOUPLER CONDUCTING TOP TRANS.
B OPTOCOUPLER CONDUCTING MID TRANS.
AND MID TRANS. TURNS ON LOWER TRANSISTOR AND HENCE SOME VOLTAGE OUTPUT AT EMMITER. =1

SO A&B= VrL.

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