Battery Charger PP-7286 ( )/U.
Abstract
The Battery Charger PP-7286 ( )/U was developed to support the Laser Rangefinder MX-9838 ( )/GVS-5 which is powered by a rechargeable nickel cadmium battery, type BB-516 ( )/U and other Army equipment using generically similar batteries. The technical characteristics are described in ECOM Development Specification Number EL-CP2128-0001A. The hardware developed consisted of the Battery Charger PP-7286 ( )/U and its Transit Case CY-7670 ( )/U. The Battery Charger operates from prime power of 115 or 230 V (plus or minus 10%) 47 to 63 Hz ac. It provides five independently adjustable charging circuits, each capable of being set to charge at constant current rates from 15 through 700 milliamperes inclusive. A multiple scale meter can be switched to measure current in each of the five channels. The circuits provide constant current into any load from zero volts (short circuit) to 36 volts. A digital timer common to all circuits can be set in tenths of an hour increments from 0.1 to 19.1 hours. Time remaining in the charging cycle is displayed by an incandescent, seven segment, 3 digit display. An internal primary battery provides nonvolatile memory for the charger in the event of power interruption. A Sixth position on the meter switch allows the voltage of this battery to be measured.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1977
- Accession Number
- ADA047881
Entities
People
- J. Woodward
- S. Waldstein