General Description

Model CTR-1020 TX/RX Dual NiCd Charger is designed for rapid simultaneous charging of 4.8V receiver and 9.6V transmitter battery packs on the field from a standard 12V automotive battery. It is capable of charging 500mAh packs at a 1½C rate giving full charge in approximately 50 minutes. In normal use charge times as short as 15 minutes may be achieved. The fast charging of the 9.6V pack is achieved through the use of switch-mode voltage boost technology.   The unit differs from conventional chargers in that it employs a novel “burp” charge technique designed to eliminate memory effects associated with NiCd cells, help restore the condition and charge capacity of old batteries, maximise capacity in everyday use and to extend batteries’ operational lifetime. The technique utilises a strategic series of alternate charge and discharge pulses which carefully control both the internal bulk and localised cell chemistry around the electrodes during charging.   The CTR-1020 employs a multi-stage pulsed current charging regime which includes “polling” (automatic detection of battery connection and removal and charge initiation), soft start (to ease degraded or cold cells into a state suitable to accept fast charging), fast charge, topping charge and maintenance (trickle) charge. Premature charge termination is eliminated through the use of a negative delta peak algorithm to determine the optimum termination point. It also incorporates detection of damaged cells which are unable to accept fast charging, and two safety timers. A fully automatic deep discharge-to-charge mode can be initiated for cycling of old battery packs which have lost their charge capacity due to extended use with conventional chargers, or new batteries to bring them into their full service capacity. Coloured LEDs clearly indicate the various charge stages throughout the process..   The unit comes mounted in a compact rugged aluminium case with a hard oven-baked powder paint finish. The 2m input lead is terminated with either a cigar lighter plug which will connect to standard in-car socket, or crocodile clips, while the output leads are terminated with a Futaba style connector for receiver and coaxial jack for transmitter packs.

 

Part Number Allocation

CTR-1020   CTR : Product ID (Charger for Transmitter/Receiver) 1020 : Product number.   Fixed Part Number : ‘CTR-1020’   The CTR-1020 product number describes a fixed configuration item which has no options.

 

Outline Specifications

Please refer to the full Data Sheet No.1020 for outline specification.