Cleaning up and photographing a Hewlett Packard 5301A 10 MHz counter plug-on module for the 5300 series modular measuring system.
Hewlett Packard 5301A Counter Plug-on Module
HP 5300B Counter Plug-On modules
Cleaning up and looking at a bunch of plug-on modules for my Hewlett Packard 5300B mainframe modules, after purchasing a new unit. It seems that I am starting to collect quite the range of modules for my HP 5300 systems since my original 5300B Measuring System back in 2017.
Updating the Programmable Voltage Reference Project
After five years and a few prototype revisions of the Version 2.12 Programmable Voltage reference, I decided it was time to update the project based on many requests and lessons learned from prototypes over the years.
Remake of the Hewlett Packard 11456A Read Out Test Card
The HP 11456A Read Out Test Card is a nifty little test board that plugs into the HP 3470 series display modules. I really wish that I had had one of these, before I started working on my faulty HP 34740A display module.
HP 34740A display and 34702A Multimeter Modules
As mentioned in a previous post on the Hewlett Packard 34702A Multimeter module, I have been looking for a 34740A display module to pair with it. I was lucky to find a module that was in a good cosmetic condition and untested for a reasonable price.
Hewlett Packard 34702A Multimeter Module
When I purchased my HP 34750A Display module, it came with a somewhat beat-up 34702A Multimeter module. I was mainly interested in the display module to pair up with my existing HP 34703A module, but this is also an interesting module worthy of further exploration.
Continue reading “Hewlett Packard 34702A Multimeter Module”Hewlett Packard 34750A Display Module Repair
Getting a HP 34750A display module for the HP 34703A DCV/DCA/Ohm Meter.
Continue reading “Hewlett Packard 34750A Display Module Repair”Hewlett Packard 34703A DCV/DCA/Ohm Meter
Cleaning up and photographing a Hewlett Packard 34703A DCV/DCA/Ω Meter plugin section of a 3470 measurement system.
Continue reading “Hewlett Packard 34703A DCV/DCA/Ohm Meter”Building the Tauntek Logic IC Tester
I just finished a popular kit project used for testing 7400 series, and some 4000 series logic IC’s. It was recently featured in CuriousMarc’s YouTube channel titled “Viewer-designed, Tauntek TTL IC tester!”.
Continue reading “Building the Tauntek Logic IC Tester”Heathkit IT-11 Capacitor Checker Refurbishment
Restoring a Heathkit IT-11 Capacitor Checker for use at my local Makerspace.
Continue reading “Heathkit IT-11 Capacitor Checker Refurbishment”Tektronix TDS 340A Oscilloscope Repair
Repairing a dead Tektronix TDS 340A Oscilloscope and making some modifications.
Continue reading “Tektronix TDS 340A Oscilloscope Repair”Hewlett Packard / Agilent 6632B Upgrade
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”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”