1. Киришүү
The YIHUA 3005D-III is a high-precision DC power supply designed for laboratory and workbench applications. It offers adjustable output voltage from 0 to 30.0 V and current from 0 to 5.00 A, with fine resolutions for precise control. This manual provides essential information for the safe and effective operation of your device.
2. Коопсуздук маалыматы
Жаракат алуунун же бузулуунун алдын алуу үчүн, түзмөктү колдонуудан мурун бардык коопсуздук көрсөтмөлөрүн окуп чыгып, түшүнүңүз.
- Электр коопсуздугу: Always connect the power supply to a grounded outlet. Do not operate in wet conditions. Ensure the power cord is undamaged.
- Вентиляция: Ensure adequate ventilation around the unit. Do not block the cooling fan or vents.
- Ашыкча жүктөн коргоо: The unit features short-circuit protection and overload protection (Constant Current/Constant Voltage mode) to safeguard the device and connected circuits. A buzzer provides audible feedback during protection events.
- Температураны башкаруу: Active temperature management helps maintain optimal operating conditions.
- Ички компоненттери: Do not attempt to open or service the unit. Refer all servicing to qualified personnel.
Figure 2.1: Rear panel illustrating the automatic cooling fan, ground wire connection, and fuse.
3. Продукт бүтүп калдыview
3.1. Алдыңкы панель
The front panel features a digital display for voltage, current, and power readings, along with digital encoder knobs for precise adjustments and output terminals.
Figure 3.1: Front panel with precision digital readings. The display shows voltage resolution of 0.01V (10mV), current resolution of 0.0001A (0.1mA), and power resolution of 0.1W.
3.2. Кутуда эмне бар
- YIHUA 3005D-III DC Power Supply Unit
- Power Cord (230V UK plug)
- Test Leads (U-shape to alligator clips)
Figure 3.2: Included U-shape to alligator clip test leads for easy connection.
4. Орнотуу
- Пакеттен чыгаруу: Кубат булагын жана бардык аксессуарларды таңгактан этияттык менен алып салыңыз. Бузулган жерлерин текшериңиз.
- Жайгашкан жери: Place the unit on a stable, level surface, ensuring sufficient space for ventilation, especially around the rear cooling fan.
- Кубат туташуу: Connect the provided power cord to the power input on the rear of the unit, then plug it into a grounded 230V AC outlet.
- Сыноочу туташуусу: Connect the test leads to the output terminals on the front panel. The red lead connects to the positive (+) terminal, and the black lead connects to the negative (-) terminal.
5. Иштөө нускамалары
5.1. Күйгүзүү / Өчүрүү
To power on the unit, flip the power switch located on the rear panel to the 'ON' position. The digital display will illuminate. To power off, flip the switch to the 'OFF' position.
5.2. Аппаратты тууралооtage жана Current
The YIHUA 3005D-III uses digital encoder knobs for precise adjustment of voltage and current. These eliminate the need for separate coarse and fine adjustment dials.
- Тtage Тууралоо: Use the 'VOLTAGE' knob to set the desired output voltage. Turning the knob slowly adjusts in small increments (1 unit per click), while turning it quickly allows for larger increments.
- Учурдагы тууралоо: Use the 'CURRENT' knob to set the desired output current limit. Similar to voltage, slow turns provide fine adjustment, and quick turns provide coarse adjustment.
Figure 5.1: Digital encoder knob operation for precise voltage жана учурдагы орнотуулар.
5.3. Constant Voltage (CV) жана туруктуу ток (CC) режимдери
Кубат булагы автоматтык түрдө туруктуу volt ортосунда которулатtage (CV) and Constant Current (CC) modes based on the load characteristics.
- Constant Voltage (CV) режими: Indicated by a green LED. In this mode, the output voltage remains constant at the set value, and the current varies according to the load.
- Туруктуу ток (ТК) режими: Indicated by a red LED. In this mode, the output current remains constant at the set limit, and the voltage varies according to the load. This mode activates when the load resistance is too low for the set voltage, causing the current to reach its preset limit.
Figure 5.2: Illustration of automatic C.C. and C.V. mode switching based on load properties.
6. Техникалык тейлөө
- Тазалоо: Тазалоодон мурун электр кубатын электр тармагынан ажыратыңыз. Сыртын сүртүү үчүн жумшак, кургак чүпүрөктү колдонуңуз. Абразивдүү тазалоочу каражаттарды же эриткичтерди колдонбоңуз.
- Вентиляция: Periodically check that the cooling fan and vents are free from dust and obstructions.
- Сактагыч: Эгерде аппаратты көпкө чейин колдонбосоңуз, аны кургак, чаңсыз чөйрөдө сактаңыз.
7. Кыйынчылыктарды
| Көйгөй | Мүмкүн себеп | Чечим |
|---|---|---|
| Күйгүзүлгөндө кубат жок | Power cord not connected; outlet faulty; internal fuse blown. | Check power cord connection; test outlet; contact support for fuse replacement. |
| Чыгуу томtage/current is zero or incorrect | Settings are too low; unit in protection mode; faulty connection. | Көлөмдү тууралооtage/current settings; check for short circuits in the load; verify test lead connections. |
| Үзгүлтүксүз үн угулат | Unit is in protection mode (e.g., short-circuit, overload). | Identify and resolve the fault in the connected circuit. The buzzer provides feedback when adjustments are made or when in protection mode. |
| Бирдик ашыкча ысып жатат | Бөгөттөлгөн желдетүү; ашыкча жүк. | Ensure clear airflow around the unit; reduce load if operating at maximum capacity for extended periods. |
8. Техникалык шарттар
| Өзгөчөлүк | Нарк |
|---|---|
| Модель аты | 3005D-III |
| Бренд | YIHUA |
| Output Voltage | 0-30.0 В |
| Output Current | 0-5.00 А. |
| Чыгуу Wattage | 150 W (at 30V 5A) |
| Тtage Resolution | 0.01 V (10mV) |
| Учурдагы токтом | 0.0001 А (0.1мА) |
| Power Resolution | 0.1 Вт |
| Өлчөмдөрү (L x W x Y) | 19.5 x 7 x 15.7 см |
| Салмагы | 1.67 кг |
| Киргизүү көлөмүtage | 230 V (UK plug) |
| Өндүрүүчү | Guangzhou Yihua Electronic Equipment Co., Ltd. |
Figure 8.1: Physical dimensions of the YIHUA 3005D-III power supply.
9. Кепилдик жана колдоо
The YIHUA 3005D-III DC Power Supply comes with a 12-month UK manufacturer warranty. For any technical assistance, questions, or suggestions, please contact our professional technical support team available 24/7 via Amazon. Spare parts and accessories are also available.