Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

What happens when a thyristos fails?

Status
Not open for further replies.
R

rich

Newbie level 1
Joined
May 26, 2004
Messages
1
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
9
thyristos

I am wanting to use a thyristor to switch a heating element but my concern is that if the thyristor fails, could it remain switched on? This would be detrimenal - any ideas on how to avoid this? Not too happy with results seen on a thermal trip switch - unreliable.
 

rich said:
I am wanting to use a thyristor to switch a heating element but my concern is that if the thyristor fails, could it remain switched on? This would be detrimenal - any ideas on how to avoid this? Not too happy with results seen on a thermal trip switch - unreliable.
Click to expand...

If the thyristor enters in short circuit, you can use a fuse, or a thermal switch to open the load when the temperature gets hot.

Bastos
 

Most Common Thyristor Failure Mode

When a thyristor is electrically or physically abused and fails either
by degradation or a catastrophic means, it will short (full-wave or
half-wave) as its normal failure mode. Rarely does it fail open
circuit. The circuit designer should add line breaks, fuses, overtemperature
interrupters or whatever is necessary to protect the
end user and property if a shorted or partially shorted thyristor
offers a safety hazard.

**broken link removed**
 

When a thyristor is electrically or physically abused and fails either
by degradation means, it will short as its normal failure mode. Rarely does it fail open
circuit. The circuit designer should add line breaks, fuses, overtemperature
interrupters or whatever is necessary to protect the
end user and property if a shorted.
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top