1. Introduction
This manual provides essential information for the safe and efficient operation of your VOLTCRAFT SNG-1000-OC-N Adjustable Power Supply. Please read these instructions carefully before using the device and keep them for future reference. This power supply is designed to provide stable DC output voltages for various electronic devices.
2. Safety Instructions
- Ensure the power supply is connected to a mains outlet with the correct voltage as specified on the device.
- Do not expose the device to moisture, rain, or extreme temperatures.
- Avoid using the power supply in dusty or dirty environments.
- Do not open the casing of the power supply. Servicing should only be performed by qualified personnel.
- Before connecting any device, always verify that the selected output voltage and current match the requirements of your device. Incorrect voltage can damage your equipment.
- Disconnect the power supply from the mains outlet when not in use or before cleaning.
- Keep out of reach of children.
3. Product Overview
The VOLTCRAFT SNG-1000-OC-N is a compact, adjustable plug-in power supply designed for versatility. It features a voltage selector switch and a standard output cable with a screw terminal connector for easy integration with various devices.

Figure 3.1: VOLTCRAFT SNG-1000-OC-N Adjustable Power Supply showing the voltage selector and output cable.

Figure 3.2: Close-up view of the adjustable voltage selector switch (3V, 4.5V, 5V, 6V, 9V, 12V).

Figure 3.3: The power supply unit with its output cable terminating in a green screw terminal connector.
4. Setup
- Unpack: Carefully remove the power supply from its packaging.
- Inspect: Check the device for any signs of damage. Do not use if damaged.
- Select Voltage: Before connecting to any device, use the voltage selector switch on the side of the power supply to choose the required output voltage (3V, 4.5V, 5V, 6V, 9V, or 12V DC). Ensure this matches the input voltage requirement of your target device.
- Connect Device: Connect the output cable's screw terminal to your electronic device. Pay close attention to polarity (+/-) to avoid damage. If your device requires a specific connector, you may need an adapter (not included).
- Plug In: Once the voltage is selected and your device is connected, plug the power supply into a suitable mains outlet. The green LED indicator on the power supply will illuminate, indicating it is powered on.
5. Operating Instructions
The VOLTCRAFT SNG-1000-OC-N is designed for straightforward operation:
- Voltage Selection: The power supply offers multiple fixed DC output voltages: 3V, 4.5V, 5V, 6V, 9V, and 12V. Use the slider switch on the unit to select the desired voltage. Always set the voltage before connecting to your device.
- Power On/Off: The unit powers on automatically when plugged into a mains socket and the green LED lights up. To turn off, simply unplug it from the mains.
- Current Limit: This power supply can deliver a maximum current of 1 Ampere (1A) and a maximum power of 12 Watts (12W). Ensure your connected device does not exceed these limits.
- Stabilized Output: The power supply provides a stabilized output voltage, ensuring consistent power delivery to your connected devices.
6. Maintenance
- Cleaning: Disconnect the power supply from the mains before cleaning. Use a dry, soft cloth to wipe the exterior. Do not use liquid cleaners or solvents.
- Storage: Store the power supply in a cool, dry place, away from direct sunlight and extreme temperatures.
- Inspection: Periodically check the power cord and casing for any signs of damage. If damage is found, discontinue use and contact customer support.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power output / Green LED off |
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| Device not working despite power |
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8. Specifications
| Feature | Specification |
|---|---|
| Model Number | SNG-1000-OC-N |
| Brand | VOLTCRAFT |
| Input Voltage | 230V AC (Standard European plug) |
| Output Voltage (DC) | 3V, 4.5V, 5V, 6V, 9V, 12V (Adjustable) |
| Output Current (Max) | 1 A |
| Output Power (Max) | 12 W |
| Special Features | Stabilized output, Adjustable voltage |
| Dimensions (L x W x H) | 8.1 x 3.1 x 6.5 cm |
| Weight | 122 Grams |
| Power Source Type | Electric Cable |
9. Warranty and Support
For warranty information and technical support, please refer to the documentation provided with your purchase or visit the official VOLTCRAFT website. Keep your proof of purchase for any warranty claims.
For further assistance, you may contact VOLTCRAFT customer service directly. Contact details are typically available on the manufacturer's website or in the product packaging.





