In theory, isolation transformers (IST) sound like “the” essential safety device for an ECE workbench. The question is, are you trying to protect your equipment, yourself or both? The two other essential safety devices for your ECE workbench are a decent variac and Differential Probes. A Note from HL: I wanted to go ahead and […]
EDS 88A-II DC-Resistance and ESR (w/ Smart Freq Sel.) – Build Video
Video #2 in the HL Complete Build Series, found on YouTube. This time I am showing my EDS 88A Capacitor Tester build. This one runs a bit under an hour in length. Soldering well over a hundred pad locations in this one!
Update: Adding THD Measurements to my Capacitors | S. Groner Linear Audio XII
A look at the design process for the upcoming HL THD Tester for capacitors. I will be using SPDT or SPST switches to allow a variety of capacitances. Resolution depends on quality of reference arm, but measuring down -160dB, is easily achieved.
Announcing the 2nd Round of HL Vintage Capacitors!
I am pleased to announce that some of my picks for the 2nd round of capacitors, have been posted on Ebay and can be found right here. This includes more MiniWatt capacitors, including a glorious looking 0.47uF 400V plus a really nice 0.15uF 160V model. I have more MiniWatts to post, so just keep an […]
New Hardware Day: “AF5FV Octopus” I/V Curve Tracer
A preview into the new Hallman Labs curve tracer. A review will be done at some point.
HL Vintage & Modern Catalogs Section Live!
HL Component Catalogs Catalogs and Data books Added: 200+Number of Brands: 45 I finally found the time and had all the pieces together again, to be able to share a lot of my vintage catalogs, handbooks and more! I hope that this helps some people find what they are looking for. A couple of years […]
BYOC E.S.V. 2 Knob Bender Mod (Modular Capacitors)
An overview of how I changed my BYOC ESV 2 Knob Bender into a modular design with regard to capacitor swapping.