A point to keep in mind regarding the AC voltage measurements some of you have been making: Although a digital multimeter may provide 4 digits or more of resolution (i.e., to tenths of a volt when reading voltages in the vicinity of 120), its readings are by no means necessarily accurate to anything remotely close to tenths of a volt.
For example, the B&K 2703C, which lists for $46 and is produced by a very reputable company, provides 0.1 volt resolution on the scale which would be used to measure AC power, but its specified accuracy on that scale translates to +/- 2.9 volts when measuring 120VAC!
Which reminds me, I've got to order myself a good Fluke DMM. My old Triplett analog multimeter just won't cut it when it comes to accuracy :-)
Best regards,
-- Al
For example, the B&K 2703C, which lists for $46 and is produced by a very reputable company, provides 0.1 volt resolution on the scale which would be used to measure AC power, but its specified accuracy on that scale translates to +/- 2.9 volts when measuring 120VAC!
Which reminds me, I've got to order myself a good Fluke DMM. My old Triplett analog multimeter just won't cut it when it comes to accuracy :-)
Best regards,
-- Al