# Care4you

## Cauer Form of Circuit Realization Cauer Form of Circuit Realization Cauer introduced two forms of circuit realization from the network function. These are known as Cauer 1st Form of network/circuit realization : The network function used for realization is such that of n>m,where n is the degree of numerator (P(s)) polynomial and m is the degree of the denominator polynomial. […]

## Foster’s Form 1 and 2 of Network Synthesis with examples Foster’s Form of Synthesis Foster has given two types of network synthesis for one-port reactive network Series combination of parallel LC networks The parallel combination of series LC networks Foster 1st Form When numerator polynomial is of higher degree than the denominator polynomial The first element capacitor is represented by A0/s The last element Inductor […]

## Network Synthesis Part-1 Lecture Notes Network Synthesis Lecture Notes Network analysis: You are given a network then you analyze the behavior (output) by applying certain excitation. Network Synthesis: You know the output response for certain excitation, then you are required to find appropriate Z(s) or Y(s) that will give that desired behavior. Let us consider the network equations in terms […]

## Concepts of Network functions (driving point and transfer function) General Terminologies of Two-Port networks: Network: A network is an interconnection of passive elements and dependent sources. There are no active or independent sources inside the box. The network is treated to be part of the square box shown in the figure. Terminal: A terminal is the endpoint of the conductor which is connected to […]

## Open Circuit and Short Circuit impedance and Image Impedance Open circuit and Short circuit impedance of a two-port network in terms of ABCD parameters   From the generalized ABCD parameter equation V1=AV2 – BI2 I1=CV2 – DI2 Applying Open circuit at port-2; I2=0 we get   V1= AV2;                               I1= CV2 Z1O   =   V1/I1= A/C   ——————————(i) Applying the short circuit at port-2; V2=0, we get […]

## Interconnection of Networks Interconnection of Networks: With the concept that impedance in series are additive and admittance in parallel are additive, we can easily solve the series and parallel combination of networks in terms of Z and Y parameters respectively. Networks can be connected in: Parallel connection Series Connection Parallel Connection of two-port networks We know the basic […]

## 8279 Keyboard/Display Interface Keyboard Types Mechanical key switches Membrane type: with advantage that they can be made very thin and sealed Capacitive Type: When a key is pressed the capacitance between the plates varies. Hall effect: No mechanical contact. It take advantage of the deflection of a moving charge by a magnetic field. Keyboard Circuit connection and Interfacing […]

## Inter-relationship between the two-port Parameters Inter-relationship between the two-port Parameters The following steps of operations can be used for the transformation one set of parameters in terms of other set of parameters: Step 1. Write the standard equations for both sets. Step 2. Solve or rearrange the second set of equations and writing them in terms of the independent variables of 1st […]