1. Pengenalan dan Selesai Produkview
The VOLTCRAFT VLP-1405 USB is a high-precision, electronically linear regulated laboratory power supply designed for various applications requiring stable and adjustable DC voltage and current. It features three independent outputs, including a dedicated USB test and development port, making it ideal for testing and developing USB-powered devices.
Ciri-ciri utama termasuk:
- Electronically linear regulated output for ripple-free operation.
- Three independent outputs for versatile use.
- vol. boleh larastage from 0 to 40V and current from 0.01 to 5A.
- Lebih Voltage Protection (OVP) for enhanced safety.
- Integrated USB test and development port for stressing and testing USB devices.

Rajah 1: Depan view of the VOLTCRAFT VLP-1405 USB Laboratory Power Supply, showing the digital displays for voltage and current, control knobs, output terminals, and USB ports.
2. Arahan Keselamatan
Sila baca dan fahami semua arahan keselamatan sebelum mengendalikan peranti. Kegagalan mematuhi arahan ini boleh mengakibatkan renjatan elektrik, kebakaran atau kecederaan serius.
- Pastikan bekalan kuasa disambungkan ke soket yang dibumikan.
- Jangan kendalikan peranti dalam keadaan basah atau damp syarat.
- Jangan buka casing; tiada bahagian yang boleh diservis oleh pengguna di dalamnya. Rujuk servis kepada kakitangan yang berkelayakan.
- Always disconnect the power cord before performing any maintenance or moving the unit.
- Pastikan pengudaraan yang betul di sekeliling unit untuk mengelakkan terlalu panas.
- Jangan melebihi vol maksimumtage dan penarafan arus peranti atau beban yang disambungkan.
3. Persediaan
Follow these steps to set up your VOLTCRAFT VLP-1405 USB Laboratory Power Supply:
- Membongkar: Carefully remove the power supply from its packaging. Inspect the unit for any signs of damage during transit. Retain the packaging for future transport or storage.
- penempatan: Place the unit on a stable, level surface with adequate ventilation. Ensure there is sufficient space around the unit for air circulation, especially at the rear where the cooling fins are located.
- Sambungan Kuasa: Connect the supplied power cord to the AC inlet on the rear panel of the power supply and then to a suitable grounded mains outlet (230V AC, 50Hz).
- Kuasa Awal Hidup: Before connecting any load, switch on the power supply using the main power switch on the front panel. The digital displays should illuminate.

Rajah 2: belakang view of the VOLTCRAFT VLP-1405 USB Laboratory Power Supply, showing the power input, fuse holder, and cooling fins.
4. Arahan Operasi
This section details the operation of the VOLTCRAFT VLP-1405 USB, including its various outputs and controls.
4.1. Kawalan dan Penunjuk Panel Hadapan
- Suis kuasa: Main ON/OFF switch for the unit.
- Paparan Digital: Two large LED displays show the current output voltage (V) dan arus (A).
- VOLT Knob: Melaraskan voltage for Output A.
- AMPERE Knob: Adjusts the output current limit for Output A.
- C-LIMIT Indicator: Illuminates when the current limit is reached.
- OVP ADJ Knob: Adjusts the Over Voltage Ambang perlindungan.
- LEBIH VOLTAGE Indicator: Illuminates when OVP is active.
- Output A Terminals: Red (positive), Black (negative), Yellow (ground) terminals for the main adjustable output.
- Output B-USB Section: Dedicated section for USB outputs with mode selection and adjustment.

Rajah 3: A hand adjusting the controls on the front panel, demonstrating the user interaction with the voltagtombol e dan arus.
4.2. Using Output A (0-40V, 0.01-5A)
- Ensure the power supply is turned off before connecting any load.
- Connect your load to the Output A terminals: positive to red, negative to black. The yellow terminal is for ground connection if required.
- Hidupkan bekalan kuasa.
- Laraskan VOLT knob to set the desired output voltage. Jilidtage will be displayed on the left digital meter.
- Laraskan AMPERE knob to set the desired current limit. The current will be displayed on the right digital meter. It is recommended to set the current limit slightly above the expected operating current of your load to prevent accidental overcurrent.
- The OVP ADJ knob allows you to set an overvoltage protection threshold. If the output voltage exceeds this threshold, the power supply will shut down to protect the connected device.

Rajah 4: The power supply with red and blue test leads connected to the main output terminals, demonstrating a typical setup for powering a device.
4.3. Using Output B-USB
The Output B-USB section provides two USB ports (USB-B1 and USB-B2) for testing and powering USB devices. It also includes a special function for stressing USB devices.
- USB-B1: Standard USB output (e.g., 5V, 1A).
- USB-B2: Higher current USB output (e.g., 5V, 2.4A).
- Suis MOD: Selects between different operating modes for the USB outputs, including normal operation and stress test modes. Refer to the markings on the panel for specific voltage/current ranges for each mode (e.g., 4.0-4.7V, 4.0-5.1V).
- V ADJ Knob: Allows fine adjustment of the voltage for the selected USB output mode.
- SHOW VALUE Button: Memaparkan vol semasatage/current of the USB output on the main digital meters.
To perform a USB stress test, connect the USB device to the appropriate USB port (USB-B1 or USB-B2), select the desired stress mode using the MODE switch, and observe the device's behavior under varying voltage conditions using the V ADJ knob.
5. Penyelenggaraan
Penyelenggaraan berkala memastikan ketahanan dan prestasi optimum bekalan kuasa anda.
- Pembersihan: Putuskan sambungan bekalan kuasa daripada sesalur kuasa sebelum membersihkan. Gunakan kain lembut dan kering untuk mengelap bahagian luar. Jangan gunakan pembersih atau pelarut yang kasar.
- Pengudaraan: Periodically check that the ventilation slots on the top, sides, and rear of the unit are free from dust and obstructions. Use compressed air to clear any dust buildup.
- Penggantian fius: If the unit does not power on, check the fuse located on the rear panel next to the AC inlet. Disconnect the power cord, unscrew the fuse holder, and replace the fuse with one of the same type and rating (T 3.15A / 250V).
6. Penyelesaian masalah
| Masalah | Kemungkinan Punca | Penyelesaian |
|---|---|---|
| Unit tidak dihidupkan. | No mains power; Blown fuse; Power switch off. | Check power outlet and cord; Replace fuse (see Maintenance); Ensure power switch is ON. |
| Tiada keluaran voltage / semasa. | Terminal output tidak disambungkan; Voltage/current knobs set to zero; OVP triggered. | Connect load correctly; Adjust VOLT/AMPERE knobs; Check OVP setting and reset if necessary. |
| C-LIMIT indicator is on. | Output current has reached the set limit. | Bertambah AMPERE setting or reduce load resistance. |
| LEBIH VOLTAGE indicator is on. | Keluaran voltage exceeded OVP threshold. | Reduce output voltage or increase OVP ADJ setting. Cycle power to reset. |
7. Spesifikasi
| Jenama | Voltcraft |
| Nombor Model | 1629370 (VC-8146850) |
| Dimensi Produk (L x W x H) | 26 x 35 x 12.5 cm |
| Berat Barang | 9 Kilogram |
| Keluaran Voltage (Output A) | 0 - 40 V (adjustable) |
| Output Current (Output A) | 0.01 - 5 A (adjustable) |
| Kuasa Keluaran | 233 W |
| Bilangan Keluaran | 3 (1 main, 2 USB) |
| Ciri Khas | High-precision multi-turn potentiometer, USB development port, Overvoltage Perlindungan (OVP) |
| Kaedah Penyejukan | Udara |
| Jenis Bekalan Kuasa | Hand-operated (Mains powered) |
| Peranti Serasi | Peranti USB |
| Jenis Penyambung | USB |
| Komponen yang Disertakan | 1 unit |
| Pertama Tersedia | 28 September 2018 |
| Negara Asal | India |
8. Waranti dan Sokongan
For warranty information and technical support, please refer to the documentation provided with your purchase or contact VOLTCRAFT customer service. Keep your proof of purchase for warranty claims.
You can find more information and support resources on the official Voltcraft webtapak atau melalui peruncit anda.





