Inverters are electronic devices that convert DC (Direct Current) to AC (Alternating Current), which are commonly used in solar power systems, backup power supplies, and other applications where AC is needed but only DC is available. In this blog post, we will discuss how to build a 555 IC inverter circuit diagram that allows you to convert 12V DC into 220V AC using a 555 timer IC. The circuit is simple to assemble, cost-effective, and is an excellent project for DIY electronics enthusiasts.
Components Needed for 555 Timer Inverter
Before diving into the circuit, let's first list the components required to build this inverter:
- 555 Timer IC
- IRFZ44N MOSFETs (2 pcs)
- BD139 Transistor
- Resistors (1kΩ, 10kΩ)
- POT (200kΩ)
- Capacitors (1uF, 4700µF)
- 12V Battery or Power Supply
- 3P2S Transformer
Circuit Diagram
The 555 Timer Inverter circuit diagram is shown below.
How Does the Inverter Circuit Work?
The 555 inverter circuit works by using the 555 Timer IC configured in astable multivibrator mode to generate a square wave signal. This signal is then used to drive two IRFZ44N MOSFETs, which switch on and off in response to the PWM (Pulse Width Modulation) signal generated by the 555 Timer. The MOSFETs drive the transformer to produce AC output.
Here is the step-by-step explanation of the circuit operation:
555 Timer IC: The 555 Timer is configured in astable multivibrator mode to generate a square wave signal. The frequency of this square wave is determined by the timing components (resistors and potentiometer) connected to the 555 Timer. The output at pin 3 of the 555 Timer drives the MOSFETs.
BD139 Transistor: The BD139 transistor is used to invert the PWM signal coming from the 555 Timer. It inverts the signal, making sure that one MOSFET is turned on when the other is off, allowing the MOSFETs to alternate and drive the transformer efficiently.
MOSFETs: The IRFZ44N MOSFETs are used to switch the current to the transformer. The drain terminals of the MOSFETs are connected to each end of the transformer, while the source terminals are connected to the ground. The gate terminals are driven by the PWM signal.
Transformer: The transformer is the critical component in stepping up the voltage from 12V DC to 220V AC. One side of the transformer is connected to the drain of each MOSFET, and the other side is connected to the 12V power source.
Power Supply: A 12V battery powers the circuit. A 4700µF capacitor is placed across the terminals of the 12V battery to stabilize the power supply and filter out any noise.
Voltage Divider and Potentiometer: A voltage divider circuit with a 10kΩ resistor and a 200kΩ potentiometer is used to adjust the timing of the 555 Timer. This helps control the frequency of the square wave signal generated by the timer.
The working of this Inverter circuit using 555 timer IC is simple yet effective, and the output is a 220V AC waveform that can be used to power AC appliances.
See the video demonstration of how the 555 timer inverter circuit works.
Conclusion
This simple and effective DIY inverter with 555 timer IC is a great project for those looking to learn about inverter circuits. By using a 555 timer IC, IRFZ44N MOSFETs, and basic components, you can easily build an inverter that converts 12V DC to 220V AC. It is cost-effective, reliable, and efficient for small-scale applications.
For more detailed guidance on building similar inverters and understanding the underlying principles, check out related resources such as Inverter Circuit Using 555 Timer and MOSFET, Inverter using 555 timer IC, and Arduino DC to AC Inverter.
Additional Reading
With this guide, you can now build your own Arduino DC to AC inverter or 555 inverter circuit, creating a reliable solution for your power needs.