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Electronic Devices - PNPN

Exercise : PNPN - Filling the Blanks
11.
At –65ºC the minimum current that will trigger the series of an SCR is ________, while at +150ºC only ________ is required.
20 mA, 100 mA
50 mA, 75 mA
75 mA, 50 mA
100 mA, 20 mA
Answer: Option
Explanation:
No answer description is available. Let's discuss.
12.
The current induced by photoelectric effects is the ________ current of the transistor.
collector
base
emitter
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
13.
The switching time of an opto-isolator ________ with increased current, while for many devices it is exactly the reverse.
increases
decreases
remains the same
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
14.
The ________ are the terminals of SCRs.
anode and cathode
anode, gate, and cathode
base, anode, and cathode
gate and anode
Answer: Option
Explanation:
No answer description is available. Let's discuss.
15.
An opto-isolator contains ________.
an infrared LED
a photodetector
both an infrared LED and a photodetector
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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