Simple inverter built by SG3524

Testing probes with a diameter of 5.0mm capable of handling currents and voltages up to 420*4450, ideal for precision measurements.
High-quality photocouplers that ensure electrical isolation between circuits, enhancing safety and performance.

The inverter circuit we're discussing is both straightforward and efficient, eliminating the need for a specialized transformer while producing a square wave output. At its core lies the SG3524 switching regulator power supply control chip, which functions as a square wave generator in this design. This generator drives the power transistor to convert direct current (DC) into alternating current (AC). As a dual-ended output pulse-width modulation chip housed in a dual-row 16-pin in-line plastic package (DIP-16), the SG3524 operates within a power supply voltage range of 8V to 35V.

Below is an illustration of the inverter circuit built using the SG3524 chip:

Inverter Circuit Using SG3524 Chip

Key components in this circuit include field-effect transistors (FETs) and transformers. The choice of two FETs depends on the desired output power; they must be identical in model. Should the output power of the individual transistors fall short of requirements, multiple units can be connected in parallel. Transformers can be sourced from standard 220V/2×12V power frequency transformers, with their power capacity adjusted to meet specific needs. The square wave oscillation frequency generated by the SG3524 is determined by the external resistors and capacitors connected to pins 6 and 7. If the frequency doesn't align with expectations, these resistor-capacitor values can be fine-tuned accordingly.

Overall, this inverter circuit is a practical and cost-effective solution for various applications requiring DC-to-AC conversion. Its simplicity and flexibility make it a popular choice among engineers and hobbyists alike. Additionally, the use of high-quality testing probes and photocouplers ensures reliable performance and safety in critical applications.

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