Teardown Tuesday.
Inside the HP 3457A 6.5/7.5 digit bench multimeter.
Service Manual
HERE and HERE and HERE
LM339 Reference
User Manual HERE
Forum Topic HERE
Photos HERE
Podcast: Download
Walkthrough of the 2024 Electronex trade show in Sydney. Forum: https://www.eevblog.com/forum/blog/eevblog-1623-electronex-2024-walkthrough/ Podcast: Download