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T ECHNICAL INFORMATION
Models No. DC1470
CONCEPTION AND MAIN APPLICATIONS
This charger can charge 1.3Ah Ni-Cd.batteries of 7.2V - 14.4V approx
in 60 minutes.
Its brief benefits and features are as follows. H
* The charging time is kept in the steady level by controlling the
out put current ( current for charging battery) in spite of the changeable
input voltage (power source voltage).
* The charger can switch into trickle charge (maintenance charge) mode
to keep the full charged condition for battery left in the charger.
The end of charging process is recognized by thermostat.
The Ni-Cd.batteries with high capacity (over 1.7Ah) and all of
Ni-MH. batteries can not be charged with this charger.
Dimensions : mm ( " )
Width ( W ) 80 (3-1/8)
Height ( H ) 63 (2-1/2)
Length ( L ) 145 (5-3/4)
Continuous Rating (W)
Voltage (V) Current (A) Cycle (Hz) Max. Output(W)
110 - 120 50 - 60 40
120 50 - 60 40
220 50 - 60 40
220 - 240 50 - 60 40
230 - 240 50 - 60 40
Output voltage (D/C) 7.2 V, 9.6 V, 12 V, 14.4 V The chargeable batteries
Output current (D/C) 1.5 A Voltage Type No.
Charging time Approx. 60 min. 7.2 V 7000
Net weight : Kg ( lbs ) 0.41 (0.9) 9000
9.6 V 9100
Cord length : m ( ft ) 2.0 (6.6)
12 V 1220
14.4 V 1420
<1> The circuit board can not be repaired, because the circuit itself are molded on the board
with the urethane resin.
It has to be replaced completely with new one.
<2> In case of damaged varistor or fuse, they can be repaired according to the following procedure without
replacing the circuit board.
(1) How to find broken varistor
a. In case that the surface of varistor (ref. to the following illustration) has broken or has become black, and
fuse has been cut, the varistor has been damaged.
b. Varistor can be damaged easily, if the charger is plugged in a double voltage of the rating one.
c. It is considered that the varistor has been broken for other reasons, if the fuse is broken while the surface
of varistor is not damaged. In this case circuit board has to be replaced.
Charger case set
(2) Replacing damaged varistor
a. Varistor is assembled on circuit board with solder. Remove it from circuit board
with soldering iron.
Varistor Circuit board
When removing varistor, melt this part with soldering iron
and remove varistor.
b. Assemble new varistor to the circuit board by soldering.
c. Cut the surplus of varistor's wire with nipper.
Circuit board Varistor
Less than 3mm
(3) Replacing damaged fuse
a. Fuse is assembled on circuit board with solder. Remove it from circuit board with soldering iron.
b. Assemble new fuse to the circuit board by soldering.
c. Cut the surplus of fuse's wire with nipper.
Less than 3mm
When removing fuse, melt this part with soldering iron
and remove fuse.
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