1. Киришүү
This manual provides essential information for the safe and effective use of the Generic AC-DC Isolated Switching Power Supply Board. This compact module is designed to convert a wide range of AC or DC input voltages into a stable 12V DC output, suitable for various electronic applications. Please read this manual thoroughly before installation and operation.

Сүрөт 1.1: Жогорку view of the AC-DC Isolated Switching Power Supply Board, showing the main components including capacitors and transformer.
2. Техникалык шарттар
The following table details the technical specifications of the AC-DC Isolated Switching Power Supply Board:
| Параметр | Нарк |
|---|---|
| Модул өлчөмү | 23.5 мм x 16 мм x 13.5 мм (болжол менен) |
| Киргизүү көлөмүtage | AC 55V-277V / DC 70V-390V |
| Output Voltage | DC 12V |
| Максималдуу чыгаруу ток | 300мА |
| Минималдуу чыгаруу ток | 0мА |
| Output Indicator | 1mA / Red light |
| Чыгуу Ripple | 60мВ |
| Чыгуу күчү | 3.6 Вт |
| Натыйжалуулук | Болжол менен 80% |
| Иштөө температурасы | -20°Cден +70°Cге чейин |
3. Өзгөчөлүктөрү
This power supply board incorporates several features for reliable operation:
- Комплекстүү коргоо: Ашыкча томду камтыйтtage protection, over-current protection, over-temperature protection, over-power protection, and short circuit protection.
- Компакт дизайн: Small in size, allowing for integration into various projects with limited space.
- Сапаттуу курулуш: Fine workmanship ensures good performance and durability.
- Узартылган кызмат мөөнөтү: Designed for long-term reliability.
4. Орнотуу жана орнотуу
Proper installation is crucial for the safe and correct operation of the power supply board. Always ensure power is disconnected before making any connections.
4.1 Коопсуздук чаралары
- Ensure all power sources are disconnected before handling the board.
- Avoid touching components while the board is powered, as high voltages болушу мүмкүн.
- Install the board in an enclosure that provides adequate ventilation and protection from environmental factors.
- Observe correct polarity for input and output connections.
4.2 Байланыш көрсөтмөлөрү
Refer to the image below for input and output terminal identification.

Image 4.1: Close-up of the power supply board showing clearly labeled 'IN' for input and 'OUT' for output terminals. The input accepts AC 55V-277V or DC 70V-390V, and the output provides DC 12V.
- Киргизүү байланышы: Connect your AC (55V-277V) or DC (70V-390V) power source to the terminals labeled 'IN'. Ensure correct polarity if using a DC input (L for positive, N for negative, though for AC it's line and neutral).
- Чыгуу туташуу: Connect your 12V DC load to the terminals labeled 'OUT'. Observe the '+' and '-' markings for correct polarity.
- Текшерүү: Кубатты колдонуудан мурун бардык байланыштарды эки жолу текшериңиз.
5. Иштөө нускамалары
Once properly installed and connected, the power supply board operates automatically.
- Apply the specified input voltage (AC 55V-277V or DC 70V-390V) to the 'IN' terminals.
- The board will convert the input to a stable 12V DC output.
- An output indicator (red light) will illuminate when the output is active, indicating the presence of 12V DC.
- Ensure the total current drawn by your load does not exceed the maximum output current of 300mA to prevent damage to the board or connected devices.
6. Техникалык тейлөө
The AC-DC Isolated Switching Power Supply Board is designed for minimal maintenance. However, observing the following guidelines can help ensure its longevity:
- Экологиялык шарттар: Operate the board within its specified working temperature range (-20°C to +70°C). Avoid exposure to excessive moisture, dust, or corrosive environments.
- Тазалоо: If necessary, gently clean the board with a soft, dry brush or compressed air to remove dust. Ensure the board is powered off and disconnected from all sources before cleaning. Do not use liquids.
- Текшерүү: Periodically inspect connections for tightness and signs of wear or corrosion.
7. Кыйынчылыктарды
If you encounter issues with the power supply board, consider the following troubleshooting steps:
- No Output Voltage / Output Indicator Off:
- Check if the input power source is correctly connected and supplying the specified voltage диапазону.
- Verify that the input terminals are correctly wired (L and N for AC, + and - for DC).
- Ensure there are no short circuits on the output terminals.
- Туура эмес чыгаруу томtage:
- Confirm that the load connected is within the 12V DC specification and does not exceed the 300mA maximum current.
- Ар кандай бош байланыштарды же бузулган зымдарды текшериңиз.
- Ашыкча ысып кетүү:
- Тактанын айланасында жетиштүү желдетүүнү камсыз кылыңыз.
- Verify that the output current does not exceed 300mA.
- Reduce the ambient temperature if it exceeds the maximum operating temperature.
- Үзгүлтүксүз иштөө:
- Inspect for loose connections or intermittent shorts.
- Check for unstable input voltage.
If problems persist after following these steps, discontinue use and consult a qualified electronics technician.





