Small Steps

22 09 2009

Today I added a tap point for analog reading from the ion gauge. Pins 3 and 7 according to the manual.

IMG_4076

Assembled:

IMG_4080

Eventually I’d like to use the digital interface, but for now this gets the job done.

Next I added a proper connector to the bench-top power supply (pulled from an old PC):

IMG_4084

This works a lot better than the wire jumper which kept falling out.

We received and tested the 100A/100mV ammeter shunt resister:

IMG_4085We will use this shunt to take current reading going into the superconducting magnet.

Next up we tested out the IGBT:

IMG_4086

Using this schematic:

IMG_4089

It successfully switched 10 mA. Next to try it with more amps.








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