Page 105 - CITS - Electronic Mechanic - TT - 2024

ELECTRONICS MECHANIC - CITS

• Also due to the action of RL₂, the MOSFETs get disconnected from the transformer, while the lower tap
connects with D.. Since, the center is already connected to battery positive, the inclusion of D provides a half
wave rectified voltage to the battery, which is effectively filtered by C, so that the battery is able to get the
required sufficient charging voltage.
• The above charging process continues until mains is present, so it should be monitored manually. When mains
fails, the action reverts into inverting mode without interrupting the appliance operations and by using a single
transformer for both the operations.

• C, makes sure that RL, always activates a shade later then RL, for safety reasons.
Battery Level:
Battery level means the quantity of charge present
in a battery. Normally in mobile phones, the battery
level is shown in dot or bar form. This enables you
to easily recognise the battery level. By knowing the
charge level, an equipment’s user can decide that
he/she should put his/her device on charging or not.
Here we present a circuit that enables you to know
the battery level of a device from the number of LEDs
that are glowing.
Installation of Inverter
Installing of an inverter in a residential or an official
building is not a tough job, but following points should
be kept in mind during installation.
• The inverter and battery should be installed in
airspace (but not in open space) and the exposure
to sunlight should be avoided.
• The place of the installation should be well ventilated and easily accessible for servicing.
• Foreign objects and water must not enter the inverter. Always ensure that no objects containing a liquid are
ever kept near the unit.
• Identify the points, which are to be connected to the inverter.
• Ensure the appliances, which are to be provided with backup do not exceed the capacity of the inverter.

• Consider the best suited position for the inverter installation as per the necessary precautions.
Distributed Board Connection:
The battery bank must be connected to the inverter and the input terminal is connected to main power in your
distribution board. The output terminal is connected to the relevant miniature circuit breakers, within your DB
(Distributed Board) which you would like your inverter to run.

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CITS : E & H - Electronics Mechanic - Lesson 48 - 55