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Transcript
INDEPENDENT PROJECT
ID 1035
TEAM MEMBERS: Ravi Teja
Venkatesh
Indian Institute of Technology
Hyderabad
D.C TO A.C INVERTER
Components required:i.
ii.
iii.
iv.
v.
vi.
vii.
Two 68uf 25v tantalum capacitor.(C1,C2)
Two 10 ohm, 5 watt Resistor.(R1,R2)
Two 180 ohm, 1 watt Resistor.(R3,R4)
Two 1N4007 Silicon Diode.(D1,D2)
Two 2N3055 NPN Transistor.(Q1,Q2)
One 24v Centre tapped Transformer.(T1)
Other requirements like wire ,case etc.
Schematic Circuit Diagram:
Working of D.C to A.C Inverters:
Electromagnetic induction is the main underlying
principle in the working of the dc to ac inverters.
The Transistors Q1,Q2 and the Transformer T1
determine the power output of the inverter.
The bigger the Transformer and more powerful the
Transistors the more power output is obtained.
The inverter requires steady supply of current
which is provided by the Lead-Acid Batteries(as it
operates at high wattages).
The inverters use electro mechanical
switch , to immediately switch to the mode
of discharging circuit of the inverter as
soon as there is a power cut.
This technique uses electro magnetic force
to either make or break the circuit, i.e to
switch it on or off.
Within the Transformer, there are two coils
namely primary and secondary coils.
Number of turns in each of these coils is
significant .
let the number of turns in and e.m.f of the
primary and secondary coils be N1,E1 &
N2,E2;
Then they satisfy the relation :
E2= -(N2/N1)E1
On the basis of the above relation ,the
voltage output is determined.
NOTE: Tantalum capacitors are used instead
of other capacitors because they do
not have regular electrolytes which
possibly over heat and explode.
References:
http://www.aaroncake.net/circuits/inverter.asp
GOOGLE images.
THANK YOU