Accession Number:

AD0805146

Title:

DIODE CONTROL RESEARCH.

Descriptive Note:

Quarterly technical progress rept. no. 2, 1 Sep-1 Dec 66,

Corporate Author:

MALLORY (P R) AND CO INC BURLINGTON MA LAB FOR PHYSICAL SCIENCE

Personal Author(s):

• Amsterdam, Richard E.
• Ball, James V.

Report Date:

1966-12-01

Pagination or Media Count:

57.0

Abstract:

During this portion of the program work was continued in the field of developing a solid-state charge control system for protection of nickel-cadmium cells using the stabistor diode as the primary control. A circuit was designed and breadboarded that operated at 25 C and at a charging current of 18 amperes. By the use of a thermistor bridge network, the circuit was able to control the charging current to a load and reduce the charging current to a trickle charge upon the appropriate electrical signal. Work began on the fabrication of stabistor diodes that can be used in the protection of silver-cadmium and silver-zinc cells at high charge rates. Units were produced with voltage characteristics approaching those required for silver-zinc cells. However, additional work is required before the design can be fixed.

Descriptors:

• (*SEMICONDUCTOR DIODES
• CURRENT LIMITERS)
• BATTERY CHARGERS
• BATTERY COMPONENTS
• ELECTRIC BATTERIES
• SOLID STATE PHYSICS
• THERMISTORS
• MANUFACTURING
• CIRCUITS

Subject Categories:

• Electrical and Electronic Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE