Buna-N is a commonly used elastomer. Buna-N is also known as Nitrile rubber, NBR or Perbunan.It is synthetic rubber copolymer of acrylonitrile(ACN) and butadiene.Elastomer is natural or synthetic material which does not break when stretched and when released it return to its original length.NBR,an improved version of Buna-N,is used for hoses,rubber belts,sealing parts,special purpose article in oil well,reciprocating oil seal,rubber seal,gaskets,roll covers,shoe soles,varieties molded part for shoe heels and O-rings. XNBR is specially used for modification of the adhesives and epoxy resin.
Response No. 1: An SCR, or Silicon Controlled Rectifier, is a semiconductor, or integrated circuit (IC), that allows the control of current using a small current. Basically, it is a simple direct current (DC) light switch.
Quora User, Hardware Engineer. Views. Most residential dimmer switches are built around a thyristor, with a variable resistor and capacitor to adjust the duty cycle of AC power. A thyristor acts like a voltage controlled switch, and the variable resistor limits how quickly the voltage of the capacitor rises or falls. While the voltage of the capacitor is above a certain level, the thyristor's gate will have a high enough potential to allow current to flow through the light bulb.