SCR Upgrade

28 10 2011

All photos.

I received the new SCR. It can handle 3000 amps peak current. It is much larger than the SCR I recently destroyed:

IRKT136-14 data sheet.

Here it is installed. Everything works:

I also added leads to the current sense resistor to avoid touching the back of the power supply:

The pressure necessary for plasma is still too high. I tried another tweak to the electron gun:

No joy. It requires about 24 millitorr for a stable plasma. UG.

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