Luminous inverter charging problem

‪@crazyinfotechtamil‬
#stabilizer
#vgaued
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stabilizer service in tamil

stabilizer and inverter service
iii


A voltage stabilizer is a device which is used to sense inappropriate voltage levels and correct

them to produce a reasonably stable output where the load is connected. Here we will study

the design of a simple automatic AC voltage stabilizer which can be used for the above

purpose. In this circuit, active and passive devices, such as diodes, transformer, resistor,

capacitor, relay, IC etc. have been used. One step down transformer and one step up

transformer have also been used in this work. In case the line voltage crosses a predetermined

threshold, the comparator detects it and its output immediately goes high, switching ON the

transistor and the relay for the desired actions. The relay contacts are appropriately integrated

to the transformer taps for executing the above actions as per the commands given by the op

amp output. The designed circuit operates successfully and the results obtained are

satisfactory. When installed, the relay trips whenever the input voltage crosses 230 volts,

bringing the output to 218 volts and keeps it until the voltage reaches higher levels. When the

voltage drops back to 225, the relay gets de-energized pulling the voltage to 238 volts and

maintains the difference as the voltage further goes down. The above action keeps the output

to the appliance well between 200 to 250 volts with fluctuations ranging from 180 to 265

volts.

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