Using source transformation, calculate the value of VAB (in volts). (disregard the sign or polarity, consider the magnitude only)

Derive the expression for Zin

Design a CT-FWR to supply a load of (50) with a waveform of the following specifications: -  Vdc = 12 V  Ripple factor = 0.1 %  the main power supply is (220 Vrms, 50 Hz). Determine the following values: - 1- The value of capacitor filter. 2- The maximum load voltage (VmR) 3- The transformer turns ratio (a). 4- The RMS value of the load voltage. 5- Draw the output waveform. (assume ideal diodes)

Give an example of an analogue device that can be used as a phase comparator in a PLL system and explain its operation.

What unit do we use to report coupling constants (aka J-values)? a) MHz b) Hz c) ppm d) %

4) A single-phase full-wave AC voltage controller consists of two SCRs connected in invers-parallel. The supply voltage is 220V at 50Hz. The controller is used to control heater element of 2500W in an electric oven. The trigger angle is 30o. i) Draw the circuit diagram ii) sketch compatible waveforms for the supply, load and SCR voltages. iii) calculate the rms value of the load voltage and current. iv) Determine the input power factor of the circuit. v) Calculate the average value of the SCR current.