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Author Topic: Schematic for Keithley 238  (Read 444 times)

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Online derZockerMPTopic starter

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Schematic for Keithley 238
« on: May 29, 2024, 03:04:55 pm »
Hallo, does anyone have the schematics of the Keithley 238?
Or is it still unavaiable?
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Offline coromonadalix

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Re: Schematic for Keithley 238
« Reply #1 on: May 29, 2024, 04:59:18 pm »
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 
« Last Edit: May 31, 2024, 07:04:05 am by coromonadalix »
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Offline coromonadalix

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Re: Schematic for Keithley 238
« Reply #2 on: May 29, 2024, 05:04:16 pm »
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/
« Last Edit: May 31, 2024, 07:02:58 am by coromonadalix »
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Online derZockerMPTopic starter

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Re: Schematic for Keithley 238
« Reply #3 on: May 29, 2024, 05:58:37 pm »
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
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Offline coromonadalix

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Re: Schematic for Keithley 238
« Reply #4 on: May 30, 2024, 02:05:30 am »
but you have smu projects here ??
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