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Electronics Tutorial for Beginners
ABC of Electronics Offering free comprehensive basic
electronics tutorial. In this Electronics Tutorial we
have explained the basic electronic concepts. Here you
can find 8051 Tutorials & 555 Timer Tutorials which are
commonly used in electronics.
Every effort is made
to keep the website up and running smoothly |
DIAC-TRIAC
Diacs are bidirectional trigger diodes whose work is to
trigger Triacs or SCRs. SCRs are Silicon controlled
rectifiers. They are similar to four
layered diodes and are non
conducting till we reach there breakdown voltage. When we
connect a diac across a voltage supply with
resistor it acts like a
high impedance until 35 volts then as
zener diode at 30 v. Triac
on the other hand are used for Alternating Current. It is an
electronic device
equivalent to two silicon controlled
rectifiers joined in
inverse parallel with their gates connected together
As with the diac, the triac
is used in an ac environment, so it will always turn off
when the applied voltage reaches zero at the end of the
current
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