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PNP    
p-n-p
*

1. A type of {bipolar transistor} consisting of
a layer of N-doped {semiconductor} (the "base") between two
P-doped layers (the "collector" and "emitter"). PNP
transistors are commonly operated with the emitter at {ground}
and the collector at a negative {voltage}.

In the 1960s, the germanium PNP transistor was the cheapest
and best for use at ordinary temperatures. The {leakage
current} from collector to base in this type of device is
larger than for the silicon transistor, and also varies more
with temperature. The effect of these deficiencies can be
lessened by proper biasing and feedback, which can make the
circuit both serviceable and reliable. Neither germanium nor
PNP transistors are as common today.

The voltages used on a PNP transistor are inverted when
compared with {vacuum tubes}. Further, the behaviour of
vacuum tubes is usually described in terms of {voltages}
whereas transistors are better described in terms of
{current}.

2. {plug and play}.

(1997-05-05)

Plug 'N Play (PNP), "PnP"


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英文字典中文字典相关资料:


  • Philippine National Police - Wikipedia
    The PNP was formed on January 29, 1991, when the Philippine Constabulary and the Integrated National Police were merged pursuant to Republic Act 6975 of 1990 [1]
  • NPCS | Home Page
    A comprehensive, fast, convenient and reliable system for the issuance of Police Clearance nationwide VERIFY YOUR CLEARANCE!
  • Immigrate as a provincial nominee - Canada. ca
    The Provincial Nominee Program (PNP) lets provinces and territories nominate people who have the skills, education and work experience to help their economy (like business people and skilled workers)
  • PNP: Immigrate to Canada via the Provincial Nominee Program
    As such, the Provincial Nominee Program (PNP) allows Canadian provinces and territories to nominate individuals who wish to immigrate to Canada and who are interested in settling in a particular province The only exceptions are the Northern Canada territory of Nunavut and Quebec
  • National Police Clearance | Online Application, Fees and . . .
    Applying for a National Police Clearance in the Philippines is now fully online through the PNP National Police Clearance System (NPCS) Whether you need it for employment, travel, or legal purposes, you must apply online and book appointment at NPCS web portal
  • PNP Pangasinan Police Provincial Office - Facebook
    City and Municipal Police Stations, and other PNP units nationwide, reflecting the organization's solidarity with the Filipino people in honoring the country's hard-earned liberty Despite several peaceful public assemblies monitored in Metro Manila and other regions, all activities concluded without major disruption
  • Manitoba Immigration | Make Manitoba Your New Home
    The official website of the Manitoba Provincial Nominee Program (MPNP) Learn about immigrating, starting a business, working, and settling in Manitoba





中文字典-英文字典  2005-2009