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A Battery: Eveready 742: 1.5 V: Metal tabs H: 101.6 L: 63.5 W: 63.5 Used to provide power to the filament of a vacuum tube. B Battery: Eveready 762-S: 45 V: Threaded posts H: 146 L: 104.8 W: 63.5 Used to supply plate voltage in vintage vacuum tube equipment. Origin of the term B+ for plate voltage power supplies.
Button, coin, or watch cells. A button cell, watch battery, or coin battery is a small battery made of a single electrochemical cell and shaped as a squat cylinder typically 5 to 25 mm (0.197 to 0.984 in) in diameter and 1 to 6 mm (0.039 to 0.236 in) high – resembling a button.
A zinc-carbon lantern battery, consisting of 4 round "size 25" cells in series. Terminated with spring terminals. 4LR25-2: 4: L: R: 25: 2: An alkaline lantern battery, consisting of 2 parallel strings of 4 round "size 25" cells in series 6F22: 6: F: 22: A zinc-carbon rectangular battery, consisting of 6 flat "size 22" cells. Equivalent to a PP3 ...
This page was last edited on 5 April 2017, at 01:42 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may ...
A rare form of "C" battery is the bias cell, a button-size miniature battery designed to deliver a constant voltage with no current drain. These were briefly popular between 1936 and 1945 as the bias cell was less costly than a resistor/capacitor bias network. [ 2 ]
4 AAA batteries, 1 CR1616 or CR1620 for RAM backup: TI-89 shows table of y1 = ln(x) ... 4 AAA batteries, 1 SR44: The TI-89 Titanium was released in the June 1st, 2004 ...
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