v1= h11 i1 + h12 v2
i2= h21 i1 + h22 v2
To calculate h11 and h21 short circuit the output terminals & to calculate h22 and h12 make input open. Substitute values in the above equation to find h parameters.
hie
h parameters
In transistors, current gain plays a significant role. In h parameters, one of the parameters is hfe which is current gain. It is easier if the parameters chosen represent some significant properties of the device. Some other parameters of importance in transistors are input resistance hie and output resistance 1/hoe.So it makes sense to analyse transistors with h parameters.
the hybrid equivalent or the h-parameter are used for small signal, low freq. applications. i) h-parameters can be measured easily ii) they are more independent of each other like frequency and operating point iii) h-parameters are real no. at audio frequencies. iv) they are = value of input impedance and output admittance adikan f UK u
hf
You can calculate h parameters in CE and CB configurations by the diagram that you are looking at, but if need be there are a few formulas you can use.
h parameters of common emiter in terms of common base and viceversa
The answer depends on which parameters are to be calculated.
h-parameters is known as hybrid parameters. It is used in small signal analysis. In matrix from it is written as h11, h12, h21, h22.
hie
h parameters
h parameters
In transistors, current gain plays a significant role. In h parameters, one of the parameters is hfe which is current gain. It is easier if the parameters chosen represent some significant properties of the device. Some other parameters of importance in transistors are input resistance hie and output resistance 1/hoe.So it makes sense to analyse transistors with h parameters.
h parameters are the two port parameters , a two port parametres has two ports or four terminals two for input and two for output. In general the convention is to take current at both input and output ports into the network.for a linear network (passive elements like current source, voltage source and resistors donot change their value during the performance of circuit), we can write the voltage and current as a linear funcion of input and output parameters. especially these h-parameters are widely used in electronics cirtcuits rather than electrical circuits , the major advantage of these is we need not follow the whole tedious procedure again and again to calculate the input and output parameters just by knowing the h-parameters these values are found by direct substitution , hence one can save a lot of time by using these parameters and we come across different errors while calculation of the output parameters, if we use these h parameters only one confident and neat calculation is sufficient
the hybrid equivalent or the h-parameter are used for small signal, low freq. applications. i) h-parameters can be measured easily ii) they are more independent of each other like frequency and operating point iii) h-parameters are real no. at audio frequencies. iv) they are = value of input impedance and output admittance adikan f UK u
Every linear circuit having input and output terminals can be analysed by four parameters- 1 measured in ohms; - 1 measured in mho; - 2 are dimensionless are called h parameters. Hybrid means 'mixed'. Since these parameters have mixed dimensions, they are also called HYBRID PARAMETERS. These parameters are used to specify a transisitor performance conveniently for small voltages and currents in a particular circuit.
hf