common battery


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common battery

[¦käm·ən ¦bäd·ə·rē]
(communications)
System of current supply where all direct current energy for a unit of a telephone system is supplied by one source in a central office or exchange.
References in classic literature ?
Instead of individual batteries, one at each telephone, a large common battery was installed in the exchange itself.
In this period came the multiple switchboard, copper wire, girl operators, underground cables, metallic circuit, common battery, and the long-distance lines.
Given that geophysical survey techniques are now such a common battery of survey techniques perhaps this section is a little thin (one and a half lines on ground-penetrating radar) particularly as the selection of appropriate techniques is a major factor affecting archaeological detection.
When a salt solution is absorbed by the tissue, the aluminum foil becomes an anode and the charcoal becomes a cathode, as in a common battery.
Its design includes two inverters connected to a common battery.
The study includes Attribute Maps for the most common battery chemistries operating in the portable power segment.
By offering add-on battery power for your iPhone 4 when you need it and doubling as an external battery solution for other mobile devices, this innovative response to common battery life problems replaces existing charging accessories.