Upgrading a Hewlett Packard / Agilent 6632B System DC Power Supply with front panel binding posts and correcting an original design error.
Continue reading “Hewlett Packard / Agilent 6632B Upgrade”Hewlett Packard / Agilent 6632B Upgrade
New display boards for Power Designs D‑Series power supplies
Designing and building a replacement display for the Power Designs, Inc. 6010D power supply, and other Power Designs D‑series supplies.
Continue reading “New display boards for Power Designs D‑Series power supplies”Power Designs 6010D Universal DC Source Restoration
Restoring a Power Designs Inc. 6010D power supply
4–20mA Current Transmitter
Building a 4–20mA current transmitter and receiver for some upcoming automation projects.
Continue reading “4–20mA Current Transmitter”General Radio Co. 1531AB Strobotac Refurbishment
Refurbishing a General Radio Company 1531AB Strobotac unit built in 1975.
Continue reading “General Radio Co. 1531AB Strobotac Refurbishment”Hewlett Packard 3456A Digital Voltmeter
Cleanup, restoration, and calibration of a Hewlett Packard (HP) 6 1/2 digit 3456A Digital Voltmeter.
Continue reading “Hewlett Packard 3456A Digital Voltmeter”Hewlett Packard 3437A System Voltmeter
Trouble shooting and performing modifications on a HP 3437A System Voltmeter from 1984.
Continue reading “Hewlett Packard 3437A System Voltmeter”Milliohm Meter Version 1.5
Update to the Milliohm Meter Project
Updated V1.5 board assembly for the Milliohm Meter Project.
The Milliohm Meter board V1.41 is featured in Scullcom’s Milliohm Meter Udpdate YouTube video.
I had already started on the version 1.5 board update a week earlier and was about to send the prototype files out to OSH Park for manufacturing, when I noticed a new Scullcom video thru my YouTube subscription notice. I was pleasantly surprised to see that it was an update to the original Milliohm Meter and it was featuring the V1.41 board that I had designed. Louis had made some similar updates to components, so I quickly updated the V1.5 board file to match before sending it off.