Timeline for What happens for the SCR if I connect gate with ground when it is turned on?
Current License: CC BY-SA 4.0
11 events
| when toggle format | what | by | license | comment | |
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| Nov 20, 2018 at 14:57 | comment | added | Eslam HaSsan UWk | can you explain more about it | |
| Nov 20, 2018 at 14:52 | comment | added | Spehro 'speff' Pefhany | The gate-cathode connection shunts away some of the feedback current, and may reduce the positive feedback enough to make it turn off. | |
| Nov 20, 2018 at 14:40 | comment | added | Eslam HaSsan UWk | @Spehro Pefhany so we can say anything happens in the SCR to change it from turn on to turn off depend on current holding | |
| Nov 20, 2018 at 14:14 | history | edited | Spehro 'speff' Pefhany | CC BY-SA 4.0 |
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| Nov 20, 2018 at 14:11 | comment | added | Spehro 'speff' Pefhany | @EslamHaSsanUWk The SCR will stay on.. yes that sounds essentially correct. | |
| Nov 20, 2018 at 14:09 | comment | added | Eslam HaSsan UWk | But when the voltage between anode and cathode is smaller than VB , so the SCR need triggering voltage from gate to turn on and after that when i connect gate with ground , the current will pass through gate to ground make the current between anode and cathode decrease from current holding ,but if the current doesn't decrease from current holding the SCR will still turn on my description is correct or no , please answer . | |
| Nov 20, 2018 at 14:06 | comment | added | Spehro 'speff' Pefhany | @Janka No. Maybe you're thinking of gate-to-anode? | |
| Nov 20, 2018 at 14:04 | comment | added | Janka | If one connects gate and cathode directly when the SCR is on, most likely the gate current is too high and the gate is destroyed. | |
| Nov 20, 2018 at 13:58 | comment | added | Eslam HaSsan UWk | I think that i have answer , when I apply voltage between anode and cathode make (VAK ) >(VB) so the SCR will turn on without triggering voltage from gate to turn on,so when i connect gate with ground some current will pass through gate but the current between anode and cathode will not decrease about current holding | |
| Nov 20, 2018 at 13:56 | history | edited | Spehro 'speff' Pefhany | CC BY-SA 4.0 |
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| Nov 20, 2018 at 13:24 | history | answered | Spehro 'speff' Pefhany | CC BY-SA 4.0 |