2007-08-02 02:00:02 · 2 answers · asked by Anonymous in Consumer Electronics ➔ Other - Electronics
PNP and NPN indicate the "polarity" of transistors.
a good way to remember it, is it indicates forward bias.
Negative on Collector and Emitter and Positive on Base forward biases both diodes.
the symbol for NPN has the emitter arrow pointing out which would be the same for the internal diode. PNP is inward.
mostly the use of either depends on the design and application.
a good explanation is here.
http://www.kpsec.freeuk.com/components/tran.htm
2007-08-03 02:17:32 · answer #1 · answered by Bill R 7 · 0⤊ 0⤋
The abbreviation or acronym PNP has several different meanings: * One of the two fundamental types of bipolar transistors, the other being NPN. See transistor. ...
en.wikipedia.org/wiki/PNP
2007-08-02 09:08:29 · answer #2 · answered by ashok shetty 2 · 0⤊ 0⤋