Barbouri's Electronics Projects
Restoring vintage electronics along with designing and building new circuits. One eye looking into the past, the other looking into the future.
Posts related to the shop area and non-electronics things.
I finally came across a hard to find HP 5306A Multimeter/Counter paired with the HP 5300B Display module. It is an interesting module as it converts resistance and DC/AC voltage to a frequency that it then displays on the 5300B display, along with a frequency capability of 40 Hz to 10 MHz.
I have been looking for a Hewlett Packard signature analyzer for many years, but until I found this one they have either been in good shape and really expensive or in poor shape and really expensive.
I finally decide that I had pushed my luck far enough with my battery backed NVRAM in my Tektronix TDS 380 oscilloscope. The specifications for the Dallas Semiconductor DS1644-120 Timekeeping RAM state that it is good for at least 10 years at 25°C, and mine had just turned 28 years old.
I found a great deal on a Hewlett Packard 3314A 20 MHz function generator that was non-functional, but overall looked to be in good shape. It arrived in great condition and was well packed for a nice change. The seller clearly stated the issues with this unit such as errors when started up cold, which worsened over time until it finally lost the display and LED’s.
Repair and cleanup of a Power Designs Inc. 5015D power supply that I purchased on Ebay.
This was one of the better looking 5015D power supplies that I have seen on Ebay, that was not overpriced or included an overpriced shipping charge. The listings condition description said ” fully operational and functions as intended”.
Getting my Prusa Mini 3D printer IKEA Lack enclosure setup, and making some minor modifications to the printer.
Continue reading “Prusa Mini 3D printer and enclosure Project”
Another local Ebay find was this Hewlett Packard HP 403B AC Voltmeter in a protective HP vertical case. The case did an excellent job of protecting the meter over it’s now 48 year life.
Continue reading “Hewlett Packard HP 403B AC Voltmeter Restoration”