Questions tagged [gdt]
The gdt tag has no usage guidance.
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3 pin Gas Discharge Tube (GDT) - pinout order
I would like to know the reason behind the pinout order of a 3 pin GDT.
GDTs are designed to prevent damage from transient disturbances by acting as a “crowbar” in creating a short-to-ground circuit ...
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Right wiring for 3 phase 4 wire surge protection devices
I am looking for commercially available SPDs and came across two different options:
Option - 1: Return path is earth and there is an MOV on all the lines. Schematic would look like this:
Option - 2: ...
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How does this surge protection circuit work? [duplicate]
I was searching for a simple surge protection circuit and came upon this schematic (image below) at rs-online blog. It seems there is no description for that specific circuit and it's rather a general ...
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How to "drive" a gate drive transformer from complementary PWM outputs of a microcontroller?
I am currently using PWM and MOSFET driving like this. T1 is a gate driver transformer (GDT.) T2 generates high voltage.
Now I am planning to replace the SG3525 with a microcontroller which works on ...
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gdt and mov surge protection
greetings fellow engineers, i came by to ask you for help, i'm building a circuit that needs to be as resistant to surges as possible. I did my research, and make to this circuit: as it is supply by ...
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Gas discharge tube and IEC class II device
I'm looking at a design for a IEC class II device, and can see that there is a Gas Discharge Tube being used for suppressing high voltage transients/surges. Since the device doesn't have an earth ...
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Protecting circuit input against lightning - how to put all the pieces together?
I am designing a single wire (ground return) telephone for use in our hobby caving expeditions, starting out from a well known and successful design called Michiephone (http://speleonics.com.au/...
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I am failing to understand the difference in Impulse Sparkover voltage vs DC Sparkover voltage of GDT
Lets say I want to use a Gas Discharge tube for indirect lightning protection, and I have a tvs diode in parallel with GDT. Since this is indirect lightning and has a fast waveform, should the tvs ...
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Two Gas Discharge Tube in parallel; a fast acting gas acting tube and a gas discharge tube
I want to know what happens if we put two gas discharge tube (fast acting GDT and a GDT in parallel), and a tvs diode in parallel. Would there be an issue in putting GDT in parallel?
Datasheet of ...
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GDT in parallel with TVS diode. Should the clamping voltage of the TVS diode be equal to the DC breakover of GDT?
I am putting a GDT in parallel with TVS diode, and I want to know if I need to have clamping voltage of TVS diode slightly higher than DC breakover voltage of the gas discharge tube OR have clamping ...
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Gas discharge tube datasheet impulse sparkover specification
What does the Impulse Sparkover at 100 V/us and 1000 V/us mean?
Does it have anything to do with arcing?
How does the impulse help us decide with which GDT to choose?
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Polarity of gas discharge tubes
Do gas discharge tubes used e.g. for surge protection have a polarity, i.e., do they protect in both directions (i.e., depending which wire is hit, or if it is a positive/negative lightnings?
The ...
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AC line surge protection with GDT in series with MOV
We often use GDT in series with MOV to protect AC lines as below.
But i have Question as for 230V AC line and 275V Rated MOV - What Should be the Breakdown voltage of GDT ?
Three options available :...
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Use GDTs or MOVs under low frequency over voltage protection
For power current transformer, the secondary is not allowed to open when the primary is conducting current of several KAs. So I want to design a over voltage protection circuit for this situation, ...
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MOV failures in DC
We are facing an issue in our protection circuitry. For the below DC design MOV between Earth is getting damaged in the site.
MOV 2 & MOV 3 in the circuit is failing in the site.
System is ...
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