Royer Oscillator Pure Sine Wave Inverter 12v to 220v DC to AC CCFL Circuit
Royer Oscillator Pure Sine Wave Inverter 12v to 220v DC to AC CCFL Circuit
Royer Oscillator Pure Sine Wave Inverter Circuit
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| Royer Oscillator Pure Sine Wave Inverter Circuit electrobuff.blogspot.com |
Hi, today I'll show you how to make a Pure Sine Wave Inverter based on the CCFL (COLD CATHODE FLUORESCENT LAMP) inverter Circuit, which is basically a simple high frequency Royer Oscillator.
OverviewA Royer oscillator, also known as a resonant gate drive or flip-flop oscillator, is a type of electronic oscillator commonly used for generating high-frequency alternating current (AC) waveforms. It is often employed in applications such as power inverters and fluorescent lamp ballasts. The Royer oscillator is a type of relaxation oscillator, and its key feature is the use of a transformer for energy transfer.
Here's a brief explanation of how a Royer oscillator works:
Transformer Configuration:
The Royer oscillator typically employs a center-tapped transformer. This transformer has a primary winding and a center-tapped secondary winding. The center tap is connected to the power supply, while the ends of the secondary winding are connected to the transistors in the circuit.
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| ferrite transformer for high frequency inverter smps applications electrobuff.blogspot.com |
Transistor Switching:
The Royer oscillator uses two transistors (usually bipolar junction transistors or MOSFETs) connected in a flip-flop configuration. These transistors alternate their states, switching on and off in response to the changing magnetic field in the transformer.
Operation Phases:
The operation of the Royer oscillator can be divided into two main phases: the charging phase and the discharging phase.
Charging Phase: One transistor is turned on, allowing current to flow through one half of the primary winding, storing energy in the transformer's magnetic field.
Discharging Phase: The other transistor is then turned on, allowing the stored energy to be released back into the circuit. This causes a rapid change in the magnetic field, inducing a voltage in the secondary winding.
Positive Feedback:
The transformer provides positive feedback to the circuit. When one transistor turns on, it induces a voltage in the transformer, turning on the other transistor. This positive feedback loop sustains the oscillation.
Frequency Determination:
The frequency of the oscillation is determined by the characteristics of the transformer, such as its inductance and the capacitance in the circuit. By adjusting these parameters, the frequency of the output waveform can be controlled.
Energy Transfer:
The Royer oscillator excels in efficient energy transfer due to the transformer. The energy stored during the charging phase is efficiently transferred to the load during the discharging phase.
Watch my YouTube Video Tutorial
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| Royer Oscillator Pure Sine Wave Inverter Circuit electrobuff.blogspot.com |
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| Royer Oscillator Pure Sine Wave Inverter Circuit electrobuff.blogspot.com |
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| Royer Oscillator Pure Sine Wave Inverter Circuit electrobuff.blogspot.com |
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