Table of Contents
What is GM in BJT transistor?
Gm is a measure of the conductance of a component. It is measured in a unit called siemens(S). VT is the thermal voltage of a transistor; at room temperature, the value is approximately 25mV. The current, IEQ, is obtained by doing DC analysis of the transistor.
What is the formula of Ic in BJT?
A BJT is often considered to be a current amplifier because a small current entering the base will typically result in a large current into the collector. Or we can say that: IC = β IB , where β is a large number, typically greater than 100.
How is GM Value calculated?
In Mathematics, the Geometric Mean (GM) is the average value or mean which signifies the central tendency of the set of numbers by finding the product of their values. Basically, we multiply the numbers altogether and take the nth root of the multiplied numbers, where n is the total number of data values.
What is the value of VBE of a conducting NPN BJT?
The values of Beta vary from about 20 for high current power transistors to well over 1000 for high frequency low power type bipolar transistors. The value of Beta for most standard NPN transistors can be found in the manufactures data sheets but generally range between 50 – 200.
What is the Gm Gm of BJT?
High gain can only be achieved for a certain current density range. Larger currents need larger device sizes. Different shapes are mostly found at discrete BJTs, in order to optimize RF and switching properties, as well as emitter efficiency. gm of BJT is 40*Ic. So does it mean gm is independent of device size and shape?
How to calculate the slope of the IC to VBE equation?
(gm=Ic/Vth with Vth=thermal voltage). This formula describes the slope of the exponenetial relation between Ic and Vbe (Shockleys equation), which is valid for the ideal pn-junction only. That means, it depends on temperature and may be applied for “small” currents Ic only (because for higher Ic values resistive and other effects come into play).
What is the unit of emitter current in GM?
The unit of gm is given by the units of I/V. So, multiplying this gm by vbe gives the emitter current ie, which is very nearly equal to ic. 8 clever moves when you have $1,000 in the bank. We’ve put together a list of 8 money apps to get you on the path towards a bright financial future.
What is the reverse saturation current of BJT transistor?
In a BJT transistor V be is 0.7V and reverse saturation current is 10 -15 A. What is transconductance value? Thanks for contributing an answer to Electrical Engineering Stack Exchange!