|
|
The Hearing Aid Museum |
Hearing Aids of all types—Ear
Trumpets, Carbon Hearing Aids, Vacuum Tube Hearing Aids,
Transistor Hearing Aids, Body Hearing Aids, Eyeglass Hearing
Aids and much more! |
|
|
|
|
|
Click on the "General
Information" button (top button above) for an overview and general
information on this category of hearing aid. |
|
Hearing Aid Battery Testers |
Aurex Dual-Range Battery Tester
This dual-scale Aurex battery tester was designed to test both the A
and B batteries in vacuum tube (2-piece) hearing aids made somewhere
around
1942.
|
 |
Click picture for larger view |
| |
 
|
| |
|
|
The 3-pin plug (left) fitted "B" batteries such as the
Zenith Z-30 45
volt "B" battery for example, while the 2-pin plug (right) fitted "A"
batteries such as the
Sonotone X800
1˝ volt "A" battery. Thus the correct scale was automatically selected.
|
 |
Click picture for larger view |
| |
|
|
Close up of the Aurex battery tester meter showing the markings for
the A battery (black), range 0 - 2˝ volts) and the B battery (red),
range 0 - 50 volts.
|
 |
Click picture for larger view |
| |
|
(If a larger picture doesn't appear, you may have to
turn your pop-up blocker off)
|
|
|
|
|
 |
|
|
|
|
 |
|
|
