Analogues of miniature galvanic elements (nomograms). Reference data
Encyclopedia of radio electronics and electrical engineering / Reference materials
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One of the labor-intensive tasks is the search for analogues of galvanic cells produced by different companies in different regions of the world. Difficulties are exacerbated if the designation of the element is outdated or only the brand name is indicated.
The nomogram shown in fig. 1, establishes a clear mutual correspondence of all disk miniature silver-zinc electroplating cells for a wide range of applications. It consists of six columns. The first (far left) shows the old Japanese designations, which are still used by a number of firms in Southeast Asia. If the designation has an additional letter A on the right, this means that this element is manganese-zinc alkaline (with alkaline electrolyte), its capacity is two to three times less.
(click to enlarge)
The second column gives the modern designations of the elements of this region. The third column is the rounded dimensions (diameter x axial height). The fourth column summarizes the designations recommended by the International Electrotechnical Congress (IEC).
The fifth column contains the numerical designations of elements produced in the USA and Europe for watches without backlight and alarms. In the sixth - for clocks with backlight and an alarm clock, they differ from the elements of the fifth column by a significantly lower internal resistance. Their counterparts are in the second column - the designation ends with an additional letter W after the slash.
The nomogram shows that the range of elements produced in both the Asian and European-American regions is wider than recommended by IEC.
The same nomogram, but compiled for widely used mercury-zinc elements, is shown in fig. 2.
Author: R. Varlamov, Mytishchi, Moscow region
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