1. Introduktion og produktoversigtview
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.
Nøglefunktioner omfatter:
- Electronically linear regulated output for ripple-free operation.
- Three independent outputs for versatile use.
- Justerbar voltage from 0 to 40V and current from 0.01 to 5A.
- Over Voltage Protection (OVP) for enhanced safety.
- Integrated USB test and development port for stressing and testing USB devices.

Figur 1: Front 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. Sikkerhedsinstruktioner
Læs og forstå alle sikkerhedsinstruktioner, før du bruger enheden. Manglende overholdelse af disse instruktioner kan resultere i elektrisk stød, brand eller alvorlig personskade.
- Sørg for, at strømforsyningen er tilsluttet en jordet stikkontakt.
- Brug ikke enheden i vådt eller damp forhold.
- Åbn ikke c'enasing; der er ingen dele indeni, som brugeren kan servicere. Overlad service til kvalificeret personale.
- Always disconnect the power cord before performing any maintenance or moving the unit.
- Sørg for korrekt ventilation omkring enheden for at forhindre overophedning.
- Overskrid ikke den maksimale volumentage and current ratings of the device or the connected load.
3. Opsætning
Follow these steps to set up your VOLTCRAFT VLP-1405 USB Laboratory Power Supply:
- Udpakning: 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.
- Placering: 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.
- Strømtilslutning: 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).
- Første gang tændt: Before connecting any load, switch on the power supply using the main power switch on the front panel. The digital displays should illuminate.

Figur 2: Bag view of the VOLTCRAFT VLP-1405 USB Laboratory Power Supply, showing the power input, fuse holder, and cooling fins.
4. Betjeningsvejledning
This section details the operation of the VOLTCRAFT VLP-1405 USB, including its various outputs and controls.
4.1. Betjeningselementer og indikatorer på frontpanelet
- Afbryderen: Main ON/OFF switch for the unit.
- Digitale displays: Two large LED displays show the current output voltage (V) og strøm (A).
- VOLT Knob: Justerer udgangsvolumentage 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 Beskyttelsestærskel.
- OVER BINDTAGE 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.

Figur 3: A hand adjusting the controls on the front panel, demonstrating the user interaction with the voltage and current knobs.
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.
- Tænd for strømforsyningen.
- Juster VOLT knob to set the desired output voltage. Voltage will be displayed on the left digital meter.
- Juster 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.
- De 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.

Figur 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).
- MODE-omskifter: 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: Viser den aktuelle voltage/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. Vedligeholdelse
Regular maintenance ensures the longevity and optimal performance of your power supply.
- Rensning: Disconnect the power supply from the mains before cleaning. Use a soft, dry cloth to wipe the exterior. Do not use abrasive cleaners or solvents.
- Ventilation: 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.
- Udskiftning af sikring: 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. Fejlfinding
| Problem | Mulig årsag | Løsning |
|---|---|---|
| Enheden tænder ikke. | No mains power; Blown fuse; Power switch off. | Check power outlet and cord; Replace fuse (see Maintenance); Ensure power switch is ON. |
| Ingen output voltage/strøm. | Output terminals not connected; 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. | Øge AMPERE setting or reduce load resistance. |
| OVER BINDTAGE indicator is on. | Udgang voltage exceeded OVP threshold. | Reduce output voltage or increase OVP ADJ setting. Cycle power to reset. |
7. Specifikationer
| Mærke | Voltcraft |
| Modelnummer | 1629370 (VC-8146850) |
| Produktmål (L x B x H) | 26 x 35 x 12.5 cm |
| Varens vægt | 9 kilo |
| Udgang Voltage (Output A) | 0 - 40 V (adjustable) |
| Output Current (Output A) | 0.01 - 5 A (adjustable) |
| Udgangseffekt | 233 W |
| Antal udgange | 3 (1 main, 2 USB) |
| Særlige funktioner | High-precision multi-turn potentiometer, USB development port, Overvoltage-beskyttelse (OVP) |
| Afkølingsmetode | Luft |
| Strømforsyningstype | Hand-operated (Mains powered) |
| Kompatible enheder | USB-enheder |
| Connector Type | USB |
| Inkluderede komponenter | 1 enhed |
| Først tilgængelig | 28. september 2018 |
| Oprindelsesland | Indien |
8. Garanti og support
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 webhjemmeside eller gennem din forhandler.





