Occupation: : 369Date of Birth : 1994-09-29Join Date : 2010-11-12Age : 22
Subject: Varistor Sat 12 Mar 2011, 11:15 am
Variable resistance When certain conditions (note how they were derived Name Varistor Of Variable resistance)
Applied on the circuit. The effort is intended Excess transit is what it's like lightning, the value of High-voltage pulse to pass quickly to the Very short time. Called in English Spike, Alvaristur used to protect the circuit Against excessively high voltage and transit
Example applications Alvaristur : Suppose that a circuit is applied at Ends 220 volts AC, suddenly and conditions Certain increased voltage to 400 volts for Very short (fractions of a second) and then returned To 220 volts again, this effort the 400, which appeared and disappeared very quickly We call the effort plus transient Spike.
Alvaristur also called by another name is Resistance based on voltage Voltage Dependant Resistor And to shorten the VDR.
The following figure is a part of the tear-off Department of Computer Power Supply, and which is referred to One of the icons used to refer to Alvaristur
(symbols Common Varistor is a symbol of resistance variable is written below the character V signal to change Value of the resistance according to voltage)
Resulting from this sudden rise in the voltage of Abulfaz L to fuse Fuse (F1) to Alvaristur (Z1) to Althirmistur (NTCR1) to Alniotral (N), this Current Vilv be great either himself or Alvaristur fuse or Althirmistur or Both this and we have defended the rest of the circuit. Note also that in Figure Alvaristur up between Abulfaz L Alniotral and N is here when you enter the spike down to the line resistanceAlvaristur quickly Wimmer current