Tricky but Easy Electrical Engineering!
Definition Silicon Controlled Rectifier (SCR) is a solid state device used for power control in DC and AC system. An SCR is so called because silicon is used for its construction and its operation as a rectifier can be controlled. Silicon Controlled Rectifier is the oldest member of thyristor family. Thyristor is a family of … Read more
The main difference between Rectification Efficiency and Transformer Utilization Factor (TUF) is that former is measurement of efficiency of rectifier while latter is the measurement of extent to which transformer capacity is utilized. Rectification Efficiency is quantitative measurement of rectifier efficiency. It is ratio of DC power output to the AC power input of the … Read more
What is Freewheling Diode? A freewheeling diode is basically a diode connected across the inductive load terminals to prevent the development of high voltage across the switch. When the inductive circuit is switched off, this diode gives a short circuit path for the flow of inductor decay current and hence dissipation of stored energy in … Read more
Transformer Utilization Factor (TUF) is defined as the ratio of DC power output of a rectifier to the effective Transformer VA rating used in the same rectifier. Effective VA Rating of transformer is the average of primary and secondary VA rating of transformer. The formula for TUF can be written as below. Transformer utilization factor … Read more
The main difference between a Center Tapped and Bridge Rectifier is that one uses center tapped transformer while another do not require a center tapped transformer. Both these types are full wave rectifiers but their method of converting AC input into DC is different by employing different numbers of diodes. In center tapped full wave … Read more
Peak Inverse Voltage or PIV is the maximum voltage appearing across the p-n junction diode when it is non-conducting. A diode do not conducts when it is reversed biased. This means peak inverse voltage is the maximum reversed biased voltage across the diode terminals when it is put in a circuit. Every diode has a … Read more
What is Bridge Rectifier? Bridge Rectifier is a full wave rectifier which converts sinusoidal AC input to DC. This circuit comprises of four diodes which are so connected that two diodes conducts during positive cycle of supply input whereas remaining two conducts during the negative half cycle. A full wave rectifier is one which converts … Read more
A Center Tapped Full wave Rectifier is a circuit which makes unidirectional flow of current through the load during the full cycle of input voltage. Two diodes are so connected across the terminals of center tapped transformer secondary terminals that one diode conducts for positive half cycle and another diode conduct for negative half cycle … Read more
The value of ripple factor of single phase half wave rectifier is equal to 1.21. Since, ripple factor is the ratio of rms value of fluctuating ac component to the average value or dc value. Its value of 1.21 means that, the ac fluctuating component in the rectified output of half wave rectifier is 121% … Read more
What is Ripple? Ripple is the fluctuating AC component present in rectified DC output. The output of a rectifier may either be DC current or voltage. In view of this, AC fluctuating component present in DC output voltage is called voltage ripple and that in DC current output is called current ripple. Why Ripple is … Read more