Answer / gautam_etrx.engg

It is "Sillicon Controlled Rectifier". It's a four layer
device (pnpn) used for controlled firing.

Answer / balaji

SCR is northing but silicon controlled rectifier used to
convert the AC to Dc upto 6.5 kv.

Answer / gaurav

SCR is basically a Silicon Controlled Rectifier,
4 layer device pnpn
3 terminal device i.e, Anode , Cathode and Gate.
When anode to Cathode is Forward bias only that time it
Conducts..otherwise it remain in Off state.
Gate is applied to reduce the Forward voltage so that it
conducts for small applied voltage.

Answer / anand

.Silicon
controlled
rectifier...It
is mainly used
for reducing
firing angle @ @
applic like soft
starter's etc

can anybody tel me how a vfd or any field instrument communicates/interface with plc/scada/cs.

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What is the main difference between the terms instrumentation and Automation?

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1 Answers   Process Control Technologies,

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