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how to calculate the value of hfc for a given hfe
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∙ 14y ago
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What is hfe and hfc in transistor?
I don't know about hfc, but hFE is the amplification factor by which the transistor amplifies the base current. Therefore, if hFE is 100, the base current is amplified by a factor of 100.
Why to calculate the current gain in transistor?
A: Transistors are really voltage amplifiers since the effect is voltage across a load. Using beta as a means to calculate gain is an approximation. basically is the ratio emitter resistor and collector resistor with no loadNo. Transistors (bipolar junction types, what most people think of as "transistor") are considered to be current devices.Although it's possible to specify a transconductance (output current/input voltage), this has not been done since the earliest days of transistor theory, and you will have trouble actually finding a transconductance specification in data sheets.Current gain is (output current/input current).In a common emitter circuit, this is (collector current/base current), known as hfe or "beta", with ranges from as low as 10 for high-current devices to high hundreds for low-power audio types.In common base, it's (collector current/emitter current), and it's just a bit less than 1.0, typically 0.95 to 0.999. This is known as hfb or "alpha".In common collector, it's (base current/emitter current), known as hfc, with about the same values as hfe.The exceptions are the obsolete point-contact types of the 1950s/early 1960s, and the various types of field-effect/MOS devices known variously as FETs, JFETs, IGFETs and MOSFETs.The field-effect/MOS devices have very low/zero input current, so they are not specified for current gains.
What does HFC stands for in HFC bank?
Household Finance Corporation
When did HFC Haarlem end?
HFC Haarlem ended in 2010.
When was HFC Haarlem created?
HFC Haarlem was created in 1889.
Is hfc-152a a better replacement for cfcs than hfc-23?
Yes, because HFC-23 is a strong chemical regarding the greenhouse effect; HFC- 152A hasn't this disadvantage.
Will hfc's damage the ozone?
HFC's will somewhat damage the ozone. But they will not damage as much as CFC's.
What is hfc-134a?
Hfc-134a is the refrigerant used in moble air conditioning systems (MVAC).
What is the market cap for HollyFrontier Corporation HFC?
As of July 2014, the market cap for HollyFrontier Corporation (HFC) is $9,105,550,321.66.
HFC of 60 and 80?
20
What is the HFC of 56 168 182?
It is 14
Where can you buy ventolin inhalers with the original HFC propellant not HFA?
Albuterol inhalers with HFC propellant are no longer on the market. They are only available now with HFA.
What group of refrigerants is considered the safest?
HFC refrigerants
What type of energy transfer produces weather?
Hfc
