Electronics > Repair

Schematic for Keithley 238

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derZockerMP:
Hallo, does anyone have the schematics of the Keithley 238?
Or is it still unavaiable?

coromonadalix:
problems with it ?  calibration ?


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sorry   no schematics ,  you may have already find out this one,  but you have  theory of operations and part numbers 

coromonadalix:
the 2 ive found so far   and 88 pages   earlier post and this  104 pages

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and the 236 237 and 238  share some basics

314 pages operator manual

https://elektrotanya.com/keithley_236_237_238_source_measure_units_usr._1989-2000_sm.pdf/download.html#dl

and some threads here

https://www.eevblog.com/forum/metrology/calibrating-keithley-237-(236238)/
https://www.eevblog.com/forum/testgear/keitley-238-restoration/

derZockerMP:
Ok thanks. On xdevs Im already registert. I would like to build my own SMU with an 1A version so the output stage would be intresting

coromonadalix:
but you have smu projects here ??

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