Sunday, April 12, 2026

HP-403-B AC Transistorized AC Volt Meter

 

April 11, 2026 - Buttoned it up.






April 9, 2026 - Working!!!  The 1/16A fuse and spare was installed.  Just needs calibration.


April 6, 2026 - Batteries installed and working - meter pulsates on startup so not sure if that's normal as it does settle down - pegs when turned on, then goes to zero, then goes about half way up and then goes to zero and goes up slightly and settles to zero.  Next I need to test measuring some AC from my isolation transformer.  I have the correct 1/16A fuses on the way - using a 1/4A in the meantime.






April 3, 2026 - This arrived a few days ago and started working on it,  First task is to replace the batteries.









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