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19.09.2015
Above scheme diagram is the circuit diagram of low budget, easy built low power power inverter designed using IC 556 as multivibrator and transistor TIP120 to amplify the signal from multivibrator. Inverter, is an electronic device or circuitry that changes direct current (DC) to alternating current (AC). The input voltage, output voltage and frequency, and overall power handling depend on the design of the specific device or circuitry.
This low power inverter consist of only 9 components and transform input voltage of 10 to 16 VDC into 60-Hz, 115-V squarewave power to supply AC electronic appliance with maximum power 25 W. It’s an idea that has really turned heads and garnered attention.  The breakthrough was once thought impossible, but the new class of power inverter could put cheaper and more efficient renewable energy products on the market. Current power inverters with multiple switching transistors generate limited voltage levels. Izadian said in the University’s press release, “The thrilling moment of any research is when your thoughts, designs and implementations come out right and you reach the goal.
Not only did the bench test work, it led to the discovery of several other circuits and controllers for high-power inverters with lower switching loss, higher voltage performance and lighter reconfigured circuits. Should things work out, and they probably will, products could be ready for the marketplace in as little as three years.


The first section of the 556 timer chip is wired as an astable oscillator with R2 and C1 setting the frequency.
Lugar Center for Renewable Energy at Indiana University-Purdue University Indianapolis (IUPUI) has invented a power inverter that employs just a single switching transistor and generates infinite-level voltages. Solar power, battery storage, electric vehicles, motor drives and manufacturing robots all use inverters to generate to alternating current power efficiently. They are heavy, generate unwanted harmonics (voltage frequencies) and require filters to reduce the harmful effects to the electric grid.   They are complex and expensive electrical devices essential to get from direct current back to alternating current.
He began reconfiguring an inverter circuit and discovered a new property technique to create infinite voltage levels and invert the voltage polarity of power circuits. This means for example car manufacturers can reduce the size and insulation of traction motors so that electric vehicles can be made cheaper. Russomanno, dean of the School of Engineering and Technology adds, “We are delighted with Dr. They are interested in how Izadian’s breakthrough can result in simpler, cheaper and smaller systems with better performance than today’s technology. This discovery in turn leads to a corollary insight that the researcher employed to create the new class of inverters.


The size and weight of the power electronics can also be reduced, which can boost fuel economy in hybrid cars and buses. Izadian’s work and the possibility that his inverter can impact the renewable energy market. 25 Watt Power Inverter CircuitThis low-power 25 watt power inverter circuit which makes use of only 9 electronic parts. Such advantages translate into lower costs promoting wider adoption of green technologies and more affordable renewable energy for homes, vehicles and businesses.
His efforts are a quintessential example of the cutting-edge research that enhances the school’s image and reputation and allows us to compete in the renewable energy arena.
Oscillator circuit U1, R1, R2, and C1 works from about 4 to 16 V with a extremely stable output. This inverter circuit could be utilized to power electric razors, stroboscopes and flash tubes, and small fluorescent lamps from a 12V vehicle battery.



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