Showing you some analog multimeters and voltmeters from my collection. An occassional tech tip here and there too.
The usual greeting got cut off at the recording phase (I probably started talking while still on the shutter release timer). Don't worry though - I got down to editing those intros, and this video is the first one to feature it.
0:00 Intro 0:38 Meter #1: ERA UM-3a multimeter 1:50 UM-3a disassembly 4:05 Panel uncovering 4:35 Taking it apart further 5:41 The culprit (and story time) 6:30 Electrical vs electronic 8:00 Mechanical fixes and touchups 8:15 Reassembly 9:15 AC wattmeters digression 10:45 Hex? Allen? Imbus? 12:06 Meter #2: German antique 15/30VDC voltmeter 12:48 The problem 13:03 Serial resistor shenanigans 15:22 Schematic 16:10 Restoration 17:28 Remember about your fume extractor! 18:51 Reassembly 19:40 Mr Rattmann 20:17 Testing 23:05 Back to UM-3a: Ohmmeter 26:09 Analog ohmmeter limitations 26:28 Wheatstone bridge 27:58 Positive and negative 28:10 Meter #3 cameo appearance: Meratronik V640 29:10 Antique 6F22 battery! 30:36 Meter ranges and value calculation
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