Description
Get festive discounts on PCBWays many services https://pcbway.com/g/Tj5om7
Find Multimeters and more at https://www.welectron.com/Tischmultimeter
More from me https://www.patreon.com/marcoreps
34420A data https://github.com/marcoreps/34420a
2182A data https://github.com/marcoreps/keithley-2182a
EM Preamp patent https://patents.google.com/patent/GB2118391A/en
Simplified EM Preamp sim https://tinyurl.com/22tqqeha
Tetrajunction discussion https://www.eevblog.com/forum/metrology/teardown-standard-resistors/msg909985/#msg909985
00:00 Intro
02:53 Keysight 34420A
03:26 34420A Calibration
05:24 Resolution?
07:44 Shorting plug
09:24 34420A Noise
12:03 34420A overview
13:47 34420A teardown
14:41 JFET preamp
17:05 Connector Thermal EMF
19:40 Resistance bridge
21:23 Keithley 2182A
22:04 2182A Calibration
22:30 2182A Noise
23:05 Noise comparison
24:57 2182A overview
26:48 Input bias current
27:47 2182A teardown
29:18 Keithley 260 nV Source
33:04 Rotary multiplexer update
36:38 Beyond JFET preamps
#metrology #electronics #pcbway