Orin, this is exactly what I was looking for. I think I'll pick up a voltage standard from voltagestandard.com and use this method to at the very least test some of my gear. Excellent info.
Thanks,
Jeff
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On 12/19/2012 10:35 AM, Orin Eman wrote:
On Tue, Dec 18, 2012 at 11:21 PM, johncharlesgord <johngord@... <mailto:johngord%40verizon.net>>wrote:
**
Jeff,
You can still make the idea work by using multiple resistors of the same
value. You can make a 10:1 divider by using, say, 10 each 10K resistors;
all can be checked on the same resistance scale. You need to correct for
any loading by the meter input, of course, but the input impedance
of the
3478A is very high on the 3V and lower DC ranges.
Another way of doing a 10:1 divider:
You need to match three equal value resistors and a trimpot is used for
fine tuning by measuring two equal voltages so you would always be on the
same range of the meter you are using for tuning.
Orin.
