Review and teardown of a Keithley Instruments model 225 Current Source which dates back to 1976. These units are still very accurate today, with an accuracy of ±0.5%. A range switch and 3 decade switches can provide a current output from 0.1 nanoamps to 100 milliamps.
We are dealing with Semiconductor Fabs in Japan and one of our customer asks if this model of
Keithley 225 is repairable and visited your web site to get to know you may repair Keithley 225 .
Will you repair this unit? If you do, would you let us know standard repair cost with
turn-around time?
Looking forward to hearing from you by return.
Thanks and regards,
Akimi Ono, Possible, Inc. Japan