Brief sine wave inverter

Inverters have square wave inverter and sine wave inverter two categories, square wave inverter although single-cylinder structure, low cost, but due to harmonics too, is not suitable for inductive, capacitive circuit work, and sine wave inverter on the market price is relatively high, so some users difficult to accept, thus limiting its promotion and application. A brief introduction and practical 600w car inverter.
Sinusoidal pulse modulation Solar power inverters is the key, they all require a sine wave generator, use it to generate the sine wave and triangular wave (sawtooth) were compared realize sine wave modulation. Many ways and means to generate a sine wave. Methods commonly employed analog and digital two, through a variety of different ways to achieve. As with a filter circuit with a sine wave oscillator generator and the positive feedback amplifier circuit, which is the most common classic circuit, but the adjustment is more complex, frequency accuracy is not high. There are other methods used to generate a sine wave function generator circuit. With large-scale ASIC and MCU constituted sinusoidal pulse width modulation circuit. Using EPROM and D / A converter reference sinusoidal voltage generation is a common method. DSP processors with high-speed data is the latest of a pulse width modulation method, the introduction of computer technology, we need to increase the number of software development and design work, despite the complexity and cost of the circuit coefficient has increased, but it really is great A good design approach capacity 6000w power inverter.