In various switching power supplies, fast charging, and adapter power circuits, optocouplers achieve electrical isolation between the primary and secondary sides and voltage feedback stabilization, blocking high-voltage side surge interference and ensuring circuit safety. AT817 is mainly used for ordinary adapters and home appliance power supplies to complete basic isolation and voltage stabilization feedback. AT1018 and AT1019 have higher current transmission ratios, are compatible with PD fast charging and industrial power supplies, stably transmit output error signals, assist PWM chips in adjusting duty cycles, ensure stable output voltage, meet safety isolation requirements, and improve the anti-interference and reliability of the whole machine.
Consumer power supply:
Small switch mode power supplies such as fast charging/laptop adapter power supplies require the conversion of high voltage AC to low voltage DC, with optocouplers serving as the core for primary and secondary electrical isolation and voltage feedback. The device load changes in real-time, and the optocoupler can collect output voltage fluctuations in real time and feedback them to the high-voltage side control circuit, automatically adjusting the output power to ensure stable charging voltage; Simultaneously isolate high and low voltage circuits, block power grid surges, meet insulation safety standards for household products, and avoid leakage and high voltage breakdown of equipment control.
Industrial power supply:
As the power supply core of the automation control cabinet, it works in a multi electromagnetic interference and wide temperature environment for a long time. Optocouplers are used to build a closed-loop voltage stabilization circuit to cope with voltage fluctuations in the workshop power grid and load changes caused by multiple devices starting and stopping simultaneously, continuously and stably outputting 24V industrial standard voltage; Relying on its own insulation and isolation capabilities to isolate strong and weak electrical ground loop interference, avoid high voltage impact caused by external short circuits, and protect precision industrial control devices such as PLCs and sensors.
New energy power supply:
Charging pile energy storage power supply belongs to high-voltage and high-power power equipment, with strict safety regulations and anti-interference requirements. On the one hand, optocouplers isolate and drive power switching devices to achieve high-power electrical energy conversion; On the other hand, isolate and collect battery voltage, overcurrent and overheating fault signals, completely separate the high-voltage power circuit from the low-voltage control board, resist voltage surges and electromagnetic noise during charging and discharging processes, ensure safe high-voltage operation of equipment, and accurately complete voltage stabilization and fault warning functions.
