ETS-Lindgren HI-4433-STE Electric Field Probe - Manual (Page 33)

Series H-491198-36 Battery Charger | 33
Appendix C: Series H-491198-36 Battery Charger
for NiCd Batteries
The HI-4422 Field Probe contains a Nickel Cadmium (NiCd) battery,
and uses the Series H-491198-36 Battery Charger.
S AFETY P RECAUTIONS
Before operating the Series H-491198-36 Battery
Charger, see General Safety Considerations on
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I NTRODUCTION
The H-491198-36 Nickel-Cadmium (NiCd)
Battery Charger is a dual power source
battery charger. It charges 3.6 volt 1400
mAH NiCd batteries and is powered by
120-240 VAC line power or 12.5 VDC. The
H-491198-36 Battery Charger uses a
-(dV)/(dT) negative delta V technique to
determine when the battery is fully charged,
which is typically one hour. With this
technique, the charge state of the battery
has no effect other than shortening the
charge time.
Housed in a rugged enclosure, power enters the battery charger through a power
entry module, which contains the fuses, or an optional cigarette lighter plug
adapter. The front face of the battery charger displays LEDs that provide the
operating status. The battery charger connects to the device being charged
through a short cord terminated with a power jack.
An integrated circuit within the battery charger monitors the battery voltage and
controls the charging functions according to the charge state of the battery.