Hi I am triggering an coil-gun with an SCR, The circuit is below:
SCR rated for:
800 V, 16A, Peak I =167 A
dV/dt = 500 V/us, dI/dt = 100 A/us
Gate voltage Max = 12V
Gate Current = 100mA
The trigger works fine when the caps are charged to about 30V.
Every time I trigger it when the caps are charged to more than 100V though the SCR becomes locked open - conducting between all pins, I have destroyed about 10 of them trying to solve this problem and I am getting desperate.
Basically I want to know what I am doing wrong and how I can fix it.
- Thanks
SCR rated for:
800 V, 16A, Peak I =167 A
dV/dt = 500 V/us, dI/dt = 100 A/us
Gate voltage Max = 12V
Gate Current = 100mA
The trigger works fine when the caps are charged to about 30V.
Every time I trigger it when the caps are charged to more than 100V though the SCR becomes locked open - conducting between all pins, I have destroyed about 10 of them trying to solve this problem and I am getting desperate.
Basically I want to know what I am doing wrong and how I can fix it.
- Thanks