Transcript Document
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