Notes Process of reducing a complicated network using methods T network and π network If a second network can be replaced for a first network without affecting the currents and voltages that appear at the network terminals, the two networks are said to be ...
Notes Superposition theorem In any linear network having linear impedances and power generators, the current through any impedances is the sum of the current due to the individuals sources/generators.Here fig 2 and ...
Notes Upper and lower cut off frequency of an amplifier The graph between voltage gain versus frequency is shown in fig (a). The frequency range over which the gain is more or less constant (flat) is called mid band range ...
Notes Low frequency signal mode of FET The low frequency signal mode of a field-effect transistor (FET) refers to the behavior of the transistor when it is operating in its linear region, where the output voltage is ...
Notes Barkhausen condition Consider an amplifier with gain A and a feedback route having gain β with gain (amount of output feedback to input). Then for this system to oscillate the loop gain ...
Notes Principle of switching regulator A switching regulator creates a pulse train using a pulse width modulator. The above image depicts the fundamental circuit. When the drive pulse is strong, Q1 is saturated and receives ...
Notes TTL NAND gate In TTL device, each emitter acts as a diode, therefore, Q1 and 4kΩ resistor acts like a 2 -input AND gate. The rest of the circuit inverts the signal. The ...
Notes Multiplexer A multiplexer (MUX) is a device that can synthesize a single output signal from multiple input signals in a way that is recoverable for each input signal. Data from multiple ...
