Simple Low Power Inverter using IC CD4047

1. INTRODUCING
SIMPLE LOW POWER INVERTER
Guided by: Submitted by:
Sanghamitra Manna Ma’am Abhinav Anand
Abhishek Kumar
Manish Kumar
Ritesh Raj
Joybrata Kapat

2. CONTENTS:
CONTENTS :
Introduction
Components Used
Circuit Diagram
Circuit Description
Advantages and Disadvantages
Applications

3. Simple Power Inverter : An Introduction
 Word inverter denotes the class of power conversion circuits
 Operates from a dc voltage source or dc current source
 Converts it into ac voltage or current source
 Reverse function of ac to dc converter
 Input of inverter circuit is a dc source but it can be derived from a ac source such as utility ac
supply into its charging unit
 The final ac output may be of different nature in frequency and amplitude
 Low Power Square Wave Inverters using IC CD4047

4. Components Used :
IC CD4047
Capacitor &
Resistors
Transistors ,Diodes
& Voltage
Regulator
Transformer

6. CAPACITORS AND RESISTORS:
capacitors
• C1 0.022 μ Farad
• C2 220 μ Fara
• d
Resistors
• 1 resistor of 100 ohm
• Two resistors of 4.7K each
• Four resistors of 0.1 ohm each
• 1 variable resistor of 250 k

7. TRANSISTORS
• Darlington Medium-power NPN
Transistor
• High DC Current Gain (hFE),
typically 1000
• Continuous Collector current (IC)
is 5A
• Collector-Emitter voltage (VCE) is
100 V
• Collector-Base voltage (VCB) is
100V
• Emitter Base Voltage (VBE) is 5V
• Base Current(IB) is 120mA
TIP122
Transistor
• Collector-Emitter Volt (Vceo):
60V
• Collector-Base Volt (Vcbo):
100V
• Collector Current (Ic): 15.0A
• hfe: 25-70 @ 4000mA
• Power Dissipation (Ptot): 115W
• Current-Gain-Bandwidth
(ftotal): 2.5MHz
• Type: NPN
2N3055 NPN
Power Transistor

8. DIODES
BY127 Diode
Specification:
Maximum repetitive
peak reverse voltage
VRRM: 1250V
Maximum RMS
voltage VRMS: 875V
Maximum DC
blocking voltage
VDC: 1250V
1N4739A Zener Diode
Specifications
Zener Voltage Vz Typ9.1V
Power Dissipation Pd1W
Diode Case Style
DO-41
No. of Pins 2

9.  TRANSFORMER
 1 Transformer X1 (12V-0-12V, 10A
Secondary)
 Step Down Transformer in Reverse action

10. Circuit Diagram

11. Implemented Circuit Diagram Using Proteus

12. CIRCUIT DESCRIPTION
• Monostable/astable
multivibrator
• Wired in astable mode
• Works by charging the
capacitor C1 through R1
• Two output pins
compementary to each
other
IC CD 4047(IC1)

13. CIRCUIT DESCRIPTION CONTD..
 square wave pulses are pre amplified by TIP122 transistors.
 amplified current is used to switch 2N3055 transistors to drive the inverter
transformer.
 Zener Diode and capacitor C1 provides a constant 9V for IC
 When the output at pin 10 is low Q1 Q3 and Q4 turns up
current flows through upper winding of transformer .
When output at pin 10 is high Q2,Q5&Q6 turns up
current flows through Lower winding of transformer.
 The 229-231V AC output
is available across the high-impedance winding
of the transformer’s primary windings.

14. Advantages
Provides quality output
Noise free in functioning
Requires less maintenance
Disadvantages
Unavailability of large capacity
generators
It can work only for short period
Cannot be used for inductive loads

15.  APPLICATIONS
 DC power source utilization
 Uninterruptible power supplies
 Electroshock weapons.
 Portable AC Source