DC to AC Converter
However, in terms of electrical engineering and education, a simple circuit to convert DC to AC with a pure sinusoidal output signal is often needed.
In electronic circuit engineering, there are many methods of creating AC signals (not necessarily sinusoidal) or pure sinusoidal wave signals. Finding a method to convert DC to AC using electronic circuit technology is essential for the development and practical application of electronic circuit theory.
Although the methods of converting DC to AC are diverse, I will introduce some classic methods often applied in this field.
1. Method to Convert Square Voltage Wave to Sine Wave
A well-known method of generating square pulses since the advent of transistors is the square pulse multivibrator circuit.
With this method, just apply voltage from the DC source as shown in the circuit, and there will be two outputs which are voltage square pulse signals. This square pulse signal will be converted into a sine signal based on the coil and capacitor receiving power, meaning they are charged and discharged into the coil and capacitor alternately, creating a pure sine wave, with the input source being a constant voltage (DC current).
Advantages of this method:
It’s simple to convert a DC signal to AC with a pure sine wave using inexpensive electronic components.
Easily obtain AC power from DC in a laboratory setting, serving electrical research.
Drawbacks:
The output capacity of the power source is low, making it unsuitable as a power source for home use or industrial production. Therefore, high-capacity inverters on the market still have an advantage in practical applications.
2. Other Unique Methods Using Electronic Components
These methods are similar in nature to the first method, but they use newer electronic components invented at the end of the 20th century.
Using Insulated Gate Bipolar Transistor (IGBT)
This circuit will generate sine wave AC power with a frequency higher than the usual 50-60Hz. The Insulated Gate Bipolar Transistor, a three-terminal power semiconductor device invented by Hans W. Beck and Carl F. Wheatley in 1982, combines the fast switching ability of a MOSFET with the ability to withstand large loads like normal transistors.
Note: this circuit is practically applicable for power consumption with small capacity converted from 12V battery bank, or solar power, or from battery earth source (electricity from earth ground).
Using a 555 Timer IC
The 555 timer IC generates a square pulse voltage, which will be converted into AC with a sinusoidal signal through the coil and capacitor. Adjustments can be made when using the 555 timer IC, and the AC sinusoidal signal at the output depends on the parameters of the capacitor and resistor. This circuit is quite good for education and experiments and has high practical applications.
Note: Let's change the indices of L and C to get the custom frequency.
3. Inverter: A Simple Way for Practical Conversion Purposes
If you don't need cheap, quick AC power for building, experiments, or education, then an inverter is the fastest way to effectively convert DC to AC. You can find inverters on e-commerce markets such as Amazon and Aliexpress.
View and refer to e-commerce markets:
The inverter in the image above is for illustration only. In fact, there are many similar inverters, and there are many integrated functions, features that go along with adjusting other parameters on the inverter. That is the advantage of Inverters in the market, they have their own way to create a brand. However, many features are not necessary if only a pure AC output signal is needed (for experiments).
4. Comments and Conclusions
In today's era, electronic circuits that convert DC to AC with pure sine waves do not have many practical applications but are of interest to many people, as evidenced by their presence on video social networks. This interest may stem from students' studies and research needs.
However, when considering the input power for overunity electronic circuits (where the output power is greater than the input power), a sinusoidal signal is necessary. It is very possible that those looking for a way to convert DC to AC are actually creating an input power supply for a free energy device.
A complete set of plans, including a method of converting electricity through the overunity electronic circuit, creates an output power greater than the input power:
🔹 Version from Nikola Tesla's Magnifying Transmitter
🔹 The "tension" for "electricity fractionation" to occur is the Earth's Potential Potential. To be precise, it is the tension of the Ether, and the electricity is the dynamic polarization of the Ether.
🔹 During "Electricity segment", the magnetic field collapses several times in short periods of time. That leads the voltage V = Φ/t to reach infinity (V → ∞) when t → 0
- V - The electromotive force which results from the production or consumption of the total magnetic induction Φ (Phi). The unit is the “Volt”. Where t is the time of magnetic field collapse from maximum to complete collapse.
- Research scholars also call it Tesla's technology called Radiant Energy from Electronic Circuits, Impulse Technology.
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