Service Manual Part 5

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  
.!$&&#((/
The power supply has a limited capability to float charge a lead acid battery under con-
stant voltage conditions. The performance is limited by the way the power supply’s
continuous output current rating is limited (typically 4.5A at 20°C).
The following diagram shows an external protection circuit, consisting of two diodes
with the appropriate ratings (i.e. 10A/50V), to be used when float charging a lead acid
battery. This circuit prevents damage to the power supply due to reverse current, or the
battery being connected with reverse polarity.
The current limit prevents charging from being excessive, should a discharged battery
be connected. The output voltage of the power supply does not compensate for the tem-
perature dependence of lead acid batteries.
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   
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