PARTH 05 PPT.pptx...,...................

Low power inverter

1. Introducing
Simple low power Inverter
Submitted By:
Parth Sanjay Patil

2. Content
Introduction
Component Used
Circuit Diagram
Circuit Description
Block Diagram
Advantages
Disadantages
Application

3. Introduction
The word 'inverter' in the context of power- electronics denotes a class of
power conversion (or power conditioning) circuits that operates from a dc
voltage source or a de current source and converts it into ac voltage or current.
The 'inverter' does reverse of what ac-to-dc 'converter' does (refer to ac to dc
converters). Even though input to an inverter circuit is a dc source, it is not
uncommon to have this dc derived from an ac source such as utility ac supply.
Thus, for example, the primary source of input power may be utility ac voltage
supply that is 'converted' to dc by an ac to dc converter and then 'inverted' back
to ac using an inverter. Here, the final ac output may be of a different
frequency and magnitude than the input ac of theutilitysupply.

4. Component used
IC HCF4047
IC ULN2004
Capacitor & Resistor
Relay & Voltage Regulator
Transformer

5. 1) IC HCF4047

6. 2) IC ULN2004

7. 3) Capacitor and Resistor
➢RESISTORS
1) 470Ω R1 and R2
2) 33Ω R3 and R4
3) 200k VR1
➢CAPACITOR
1) 0.1 μ farad
➢VOLTAGE REGULATOR➢RELAY
1) 12 volt 1) 12 volt

8. Transformer
1 Transformer X1 (9V-0-9V, 500mA secondary)

9. Circuit Diagram

10. Circuit Description
Here is a simple low-power inverter that converts 12V DC into 230-250V
AC. It can be used to power very light loads like window chargers and night
lamps, or simply give shock to keep the intruders away. The circuit is built
around just two ICs, namely, IC CD4047 and IC ULN2004.
IC CD4047 (IC1) is a monostable/astable multivibrator. It is wired in astable
mode and produces symmetrical pulses of 50 to 400 Hz, which are given to IC2
via resistorsR1andR2.

11. Circuit Description
IC ULN2004 (IC2) is a popular 7-channel Darlington array IC. Here, the
three Darlington stages are paralleled to amplify the frequencies received from
IC1. The output of IC2 is fed to transformer X1 via resistors R3 and R4.
Transformer X1 (9V-0-9V, 500mA secondary) is an ordinary step-down
transformer that is used here for the reverse function, i.e., step up. That means it
produces a high voltage. Resistors R3 and R4 are used to limit the output
current from the ULN to safe values. The 230-250V AC output is available
across the high-impedance winding of the transformer's primarywindings.

12. Block Diagram

13. Advantages
•It provides quality power output.
•It is lighter and smaller in size, and hence can be easily transported.
•It's noise-free in functioning when compared to traditional generators.
•Requires less maintenance.
•Higher efficiencies as each panel/pair of panels is managedindividually.

14. Disadvantages
•There are no large capacity generators in the markets.
•The Inverter can power a few appliances for a short period.
•More individual hardware piecesthatcanfail

15. Application
•DC power source utilization.
•Uninterruptible power supplies.
•Electroshock weapons.HVDC power transmission.
•Inverters can be very helpful duringpowercuts.