Monthly Archives: August 2020

Widlar Current Source | what is widlar current source using mosfet , output resistance

what is widlar current source using mosfet , output resistance ? derivation , calculation . Voltage Regulators An unregulated power supply consists of a transformer (step down), a rectifier and a filter. these power suppliers are not good for some applications, where constant voltage is required irrespective of external disturbances. the main disturbances are As… Continue reading »

Integrator : what is Integrator definition , formula , meaning circuit waveform transfer function

miller integrator transfer function , Integrator : what is Integrator definition , formula , meaning circuit waveform ? Integrator A circuit in which the output voltage waveform is the integral of the input voltage waveform is called integrator. Fig. 46 (a) shows an integrator circuit using op-amp. Here, the feedback element is capacitor. the current… Continue reading »

average codeword length definition | what is average codeword length definition formula

what is average codeword length definition formula ? average codeword length definition ? THE SOURCE CODING (i) Definition             A conversion of the output of a discrete memoryless source (DMS) into symbols (i.e., binary code word) is called source coding. The device that performs this conversion is called the source encoder. Figure 3.15 shows a… Continue reading »

Find the differential entropy H(X) of the uniformly distributed random variable X with the following probability density function

EXAMPLE 9.32. Find the differential entropy H(X) of the uniformly distributed random variable X with the following probability density function (pdf): equation             for (i) a = 1, (ii) a = 2, and (iii) a =  . Solution: We know that the differential entropy of X is given by equation Making use of given pdf,… Continue reading »

UNCERTAINTY IN THE TRANSMISSION PROCESS | define what is UNCERTAINTY IN THE TRANSMISSION PROCESS

what is UNCERTAINTY IN THE TRANSMISSION PROCESS ? TRANSMISSION OF CONTINUOUS SIGNALS             Now, let us further illustrate the Hartley-Shannon law for the exchange of bandwidth and signal-to-noise ratio by a continuous signal which is bandlimited to fm Hz. According to the sampling theorem, the information of a continuous-time signal, which is bandlimited to fm… Continue reading »

channel capacity in information theory | channel capacity is exactly equal to | formula

what is channel capacity in information theory | channel capacity is exactly equal to | formula theorem and unit ? THE CHANNEL CAPACITY             In this section, let us discuss various aspects regarding channel capacity. 9.12.1. Channel Capacity Per Symbol Cs. The channel capacity per symbol of a discrete memoryless channel (DMC) is defined as… Continue reading »