HP/Agilent 6632B Repair

HP/Agilent 6632B Repair

This is the second 6632B, that I bought from eBay in condition "For parts or not working". I repaired it about 2 years ago, but after receiving some questions about the 6632B via email, I thought this article could be helpful to others.

The inside of the unit was very dusty, but after cleaning the...

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Keithley 236 Repair

Keithley 236 Repair

Recently, I acquired a broken Keithley 236 SMU, which is normally able to source voltages from -110V to +110V, and currents from -100 to +100 mA with ranges down to 1 nA.

The seller stated, that it is not possible to turn it on. He was right on this. The fuse carrier was missing, as well as the fa...

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HP/Agilent 6632B to 66332A Conversion

HP/Agilent 6632B to 66332A Conversion

It is possible to "upgrade" a 6632B System DC Power Supply to a 66332A Dynamic Measurement DC Source.

WARNING: By following this process, the unit will lose its calibration and has to be recalibrated!

Their hardware is identical, but the 66332A has an enhanced feature set for measuring transient...

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