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Std edition Thyristor dv/dt demo

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License: Public Domain

Published Time: 2021-04-11 20:19:13
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Description

Demonstrating the effect of dv/dt turn-on in a Thyristor.

For a Thyristor or SCR in the non-conducting state - even with the gate tied to the cathode - as the rate of change of voltage (dv/dt) across the anode and cathode terminals exceeds the datasheet specified maximum value (in this case 30V/us), the device will turn on.

A similar effect occurs in Diacs and Triacs.

This simulation uses the EasyEDA Thyristor model. For more on this model see:

https://easyeda.com/editor#id=57484b1c27dd43aaa8aada2cb5f5fc81

and:

https://easyeda.com/editor#id=63f9efaae37446178f7e1b00033dcb7b

in:

https://easyeda.com/example/project-BDxrlDVdv

To run the simulation:

CTRL+R

signality.co.uk

design drawing
schematic diagram
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PCB
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ID Name Designator Quantity
1 Pulse(1 2.1 2.5u) V2 1
2 V=LIMIT(0, 15, V(gen)) B1 1
3 100 R1 1
4 V=V(ramp)*V(slope) B2 1
5 2N5060EE T1 1
6 Pulse(0 15 0 1u 10n 1u 3u) V1 1

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