250W PWM inverter circuit diagram based on SG3524

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A 250W surrounds the IC SG3524 PWM inverter circuit shown here. The SG3524 is an integrated switching regulator circuit with all the necessary circuitry and requires a switching regulator, single-ended or push-pull mode. SG3524's internal design circuit built-in pulse width modulator, oscillator, reference voltage source, error amplifier, overload protection circuit, output driver, etc. SG3524 form the heart of this PWM inverter circuit, it can correct its output voltage to the output load Variety. The variation in the output load of the non-PWM inverter directly affects the output voltage (the output voltage decreases when the output load increases, and vice versa), but the output voltage of the PWM inverter maintains a constant output load over a range.