Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / guest
A thyristor is a semiconductor device which acts as a
switch. However, when switched on it can only pass current
in one direction. It is in fact a switchable diode
sometimes known as a silicon controlled rectifier. To
switch alternating current two devices are connected in
inverse parallel.
Each device is turned on at the appropriate time by a
trigger pulse applied to the gate and the device will
remain on until the instantaneous load current through it
drops to zero.
The trigger pulses are generated by a driver - which times
the pulses to ensure the thyristor unit output is a
function of the input demand signal (e.g. from a
controller) in the selected Firing Mode.
Eurotherm thyristor units incorporate the thyristor
devices, together with the driver and the heatsink which
dissipates the heat generated by the thyristor devices.
Many units include internal high speed fuses to protect the
thyristors from high overload currents. The benefits of
thyristor units are numerous. They offer a reliable long
term alternative to electromechanical devices reducing the
necessity for ongoing maintenance.
Thyristor units are particularly cost effective for fast
systems, for complex loads involving transformers and/or
heaters whose resistance changes with temperature or time
| Is This Answer Correct ? | 11 Yes | 0 No |
Post New Answer View All Answers
What are the types of feedback oscillators?
why on delay timer used for fully automatic star delta starter?
in single phase converter, the no.of scr's conducting during overlap a)1 b)2 c)3 d)4
WHAT IS MEANING OF Gg & Gg IN hrc FUSE
When calculating the speed of a rotor required for a particular frequency of synchronous generator we use the equation 60f/p Is this p is the number of pole pairs of rotor & do we consider the number of pole pairs in the stator is 1?
i want to learn control schedule for 11kv panel? can any one send the detailed control schedule?
what are the values of VRY,VYB,VBR,Vry,Vyb,Vbr,Vrn,Vyn,Vbn for Magenetic balance test of 100 KVA and 63 KVA Distribution transformer
Define end float in a motor?
what is DRP panels?
In 11/0.414 KV Parralel supply network with Bus tie closed what will be the fault level is it doubled or halved??
Explain how you intend to work under pressure to meet up with deadline target?
What is the approximate value of stacking factor?
We have 750KVA DG set, we want to introduce REF relay with 1250/1A,CL PS,Current transformers.The lead distance of 2.5mm copper flexible cable from CT to relay is around 5mtrs.We would like to know the knee point votage(VK) & IM calculion for CT's
What is the unit of charge and current?
How to calculate the copper in HT motors if KW, RPM & Voltage is given
