Answer Posted / Narendra Kumar Saini
NPN (Normal-off Positive-off) and PNP (Positive-off Normal-on) are the two types of transistor configurations commonly used in sensors. NPN sensors have their base-emitter junction forward biased and collector-emitter junction reverse biased when no current is flowing through the base, resulting in a high input impedance. In contrast, PNP sensors have their base-emitter junction reverse biased and collector-emitter junction forward biased when no current is flowing through the base, also resulting in a high input impedance. The main difference lies in the polarity of the output voltage: NPN sensors produce a positive output voltage when activated, while PNP sensors produce a negative output voltage.
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
what are the different ripple removing circuit . which one is better and why
can you give me the solution of iiie
Anyone answer what is average cost for 1 meter GI pipe Hot dipping
what is alternater & engine genral protection?
plz send me l&t auestion papers. i have been called for written and interview industrial automation 2 yrs exper. send me on mail pal_deepak06@yahoo.com
