samuelr
Member level 4
![Member level 4](/styles/images/ranks/dlevel4.gif)
Hi
I have a simple circuit where I just need to give a 7kV to a surge protector to see if it works.
However I dont seem to be able to ignite it. The transformer is 380VAC on the pri and 10kV on the secondary I am triggering the SCR at 30 deg. The trigger on scope it perfectly at 30 deg. but 0.38kVA transformer is not going more than 5kV and the surge protector is just 7kV.![SCR_TX.png SCR_TX.png](https://www.edaboard.com/data/attachments/54/54113-7e669edf9f032f46330406e4e002a2a7.jpg)
Not sure if the 1kohm might be too much so I tried a 2k instead but that didnt help much.
I have a simple circuit where I just need to give a 7kV to a surge protector to see if it works.
However I dont seem to be able to ignite it. The transformer is 380VAC on the pri and 10kV on the secondary I am triggering the SCR at 30 deg. The trigger on scope it perfectly at 30 deg. but 0.38kVA transformer is not going more than 5kV and the surge protector is just 7kV.
![SCR_TX.png SCR_TX.png](https://www.edaboard.com/data/attachments/54/54113-7e669edf9f032f46330406e4e002a2a7.jpg)
Not sure if the 1kohm might be too much so I tried a 2k instead but that didnt help much.