Talgil DREAM 2 - The Power Supply board

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1.1.1 The Power Supply board
The drawing above shows the two options of power supply boards. The one on the left is the
DC type, it is used for powering from solar energy and the one on the right is the AC type to be
used for powering from the mains.
From the moment of connection to the energy source, the yellow LED  which indicates the
existence of the charging voltage (13.9v DC) for the backup battery should be lighting
constantly, even before the Power Switch is turned on. If it does not light, check the charging
source and check the Charging Fuse.
The red LED  of 24v AC (in AC models) will start lighting when the Power Switch is turned
on. If this does not happen, the Main Power Fuse has to be checked.
The green LED  of 12v DC will start lighting when the Power Switch is turned on. The 12v
DC is used for feeding all the electronic boards of the system; it may be generated either from
the charging source or from the backup battery, when the charging source is off. The system is
protected from excess current consumption by the 12v DC Fuse.
Main power fuse
Charging fuse
12v DC fuse
Power switch
Start button
24 v AC
Charging
12 v DC
USB
Charge voltage
adjust
Charge limit
resistor
Outputs current
sampling resistor
DC
AC
USB
12 v DC
Charging