Introduction
In the modern world, the usage of electrical and electronic gadgets is increasing day by day. This is because of necessity and the result of novel inventions. The gadgets make life easier and pleasurable. But at the same time, these gadgets consume a lot of electrical energy for their operation and running. In order to give prolonged and continuous usage, more and more electricity is demanded.
AS the usage has multiplied, demanding more power at the same time, scarcity and shortage of electrical power have been increasing day by day. As such, to run these gadgets during those times of power shortage and power failure, an inverter comes in handy to put the gadgets on service for continued uninterrupted operation.
As such, the inverters are also called an uninterrupted power supply source, besides being called inverters. We can easily build an inverter for our personal domestic use, making use of some discrete and crucial components. The self-assembling inverters work efficiently besides cost effective with a good quality approach.
Inverter
An inverter is nothing but converting low-voltage DC voltage, especially from batteries, into high-voltage AC. That is converting 12 V DC into 230 V AC. This is for home applications, which are normally used for lights and fans. There are two types of inverters. One is a square-wave, and another is a sine-wave.
Sine-wave inverter
A sine-wave inverter waveform almost resembles our normal electrical power. Hence, it is preferable for domestic purposes.
Advantages of a sine-wave inverter
Safer for electrical and electronics gadgets
Smooth operation
Reduced noise and heating
Efficient performance
Know your circuit
In this post we are discussing a sine-wave inverter circuit for assembling. The circuit is simple and straightforward. Please go through the circuit schematic and ascertain the various components joined.
Know your design
IC 555 works as a producer of a sine wave nearly equal to our electric supply system. The sine wave output can be set using the variable resistor VR. The sine wave output is fed to the power amplifier stage of push-pull MOSFETs, which drives the Step-up 1 inverter transformer to give 220 V AC. The inverter circuit works on the 12V battery BT.
Parts list
MOSFETs =2 nos. of IRF540N
IC 555 = 1 no.
BC 549 NPN Transistor
VR variable control of 20K ohms.
BT 12V DC Heavy duty Battery - for 500W load use 12V , 120Ah battery
Inverter transformer type 12-0-12V primary and secondary delivers
230V AC up to 500W power.
Know your Assembling
The circuit can be assembled on a general-purpose printed board. Battery, Inverter, transformer, etc., can be placed outside the PCB. Use proper heavy-duty heatsinks for MOSFETs.
Conclusion
A reliable power backup system using very few components and a step-up transformer is discussed here for your assembly and use.
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