Electronic Devices - Thyristors - Discussion
Discussion Forum : Thyristors - General Questions (Q.No. 2)
2.
You need a very efficient thyristor to control the speed of an AC fan motor. A good device to use would be
Discussion:
6 comments Page 1 of 1.
Chinnu said:
1 decade ago
Since its a bidirectional device.
AVINASH C M said:
1 decade ago
When the TRIAC switch is connected between the AC power supply and the motor, the power flow can be controlled by varying the RMS of the AC voltage.
Morales said:
10 years ago
Is diac also applicable?
Vishal vishwkarma said:
8 years ago
Because triac can be control any polarity of voltage.
VEDECHERLA said:
6 years ago
DIAC can also control any polarity of voltage but why there are not employed to control the speed of an AC fan motor.
Anomie said:
3 years ago
@Vedecheria.
Because DIAC has no gate terminal to control the current flowing in the two conducting terminals, unlike TRIAC. DIAC can only operate if the voltage across two terminals has reached or exceeded the break-over voltage.
Because DIAC has no gate terminal to control the current flowing in the two conducting terminals, unlike TRIAC. DIAC can only operate if the voltage across two terminals has reached or exceeded the break-over voltage.
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