Better precision than a battery can be found by using a precision
voltage regulator. Take a look at the Precision Voltage Source on my
website www.w3fpr.com.
73,
Don W3FPR
On 12/27/2019 5:53 PM, Bill Frantz wrote:
A simple reality test for a volt meter is to measure a fresh battery.
Zinc/carbon or Alkaline should show about 1.56 volts. (I learned this
test from the bias setting instructions for a Dynakit Stereo 70
amplifier. They built the amp so the test point read 1.56 volts when the
bias is correctly set and suggested calibrating your meter with a
battery. In that era, the zinc/carbon battery was what ran almost all of
the flashlights (torches for for English speakers) in the world.
73 Bill AE6JV
On 12/23/19 at 11:30 PM, rmcg...@blomand.net (Bob McGraw K4TAX) wrote:
A good, known accurate DVM is an asset to any station. Use it to
determine if the others are accurate. There are several good brands
available. A DVM that is not accurate is worse than no DVM at all.
My choice of many years ago is my Fluke 77. After I tapped it with
too much voltage, I sent it to Fluke for repair and calibration. I am
confident when I make a measurement it is accurate without question.
-------------------------------------------------------------------------
Bill Frantz | The first thing you need when | Periwinkle
(408)356-8506 | using a perimeter defense is a | 16345 Englewood Ave
www.pwpconsult.com | perimeter. | Los Gatos, CA 95032
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