Gas Discharge Tube use

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lixnig

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What is the proper way to connect a GDT in a circuit to protect against large surges in a system? Is it simply from supply rail to ground so as to shunt the surge away from the equipment?

Secondly, hooking up a GDT across an AC source with a magnitude high enough to cause the GDT to conduct would cause the device to see a very shortened life. Is that correct?

Chris
 

A manufacturer specifies:
Surge arresters must not be operated directly in power supply networks.
Click to expand...

More generally, they must not be operated in situations, where the discharge isn't self-quenching.
 

If its a power supply you'd like to protect MOVs are typically the way to go. GDT's are typically used on communication lines due to their very low capacitance (or low insertion loss).

-Gavin
 

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