1. Introduktion
The OWON SPE3103 is a single-channel programmable DC power supply designed for laboratory and industrial applications. It features a compact design, high resolution (10mV / 1mA), and a 2.8-inch TFT LCD display for clear readings. This power supply offers a list waveform editing output function, allowing for up to 10 groups of timing outputs. It incorporates low ripple/noise characteristics, along with essential protection features such as over voltage protection (OVP) and over current protection (OCP). The unit also includes output voltage and current curve monitoring, intelligent temperature-controlled fan cooling, and a USB communication interface supporting SCPI commands.
2. Sikkerhedsinstruktioner
Please read and understand these safety instructions before operating the OWON SPE3103 power supply. Failure to comply may result in injury or damage to the instrument.
- Jording: Always connect the power supply to a properly grounded AC power outlet to prevent electric shock.
- Strømkilde: Sørg for, at input voltage matches the rating specified on the rear panel of the instrument.
- Ventilation: Bloker ikke ventilationsåbningerne. Sørg for tilstrækkelig luftgennemstrømning omkring enheden for at forhindre overophedning.
- Miljø: Operate the instrument in a dry, well-ventilated area, away from direct sunlight, high temperatures, humidity, and corrosive gases.
- Væskekontakt: Avoid exposing the instrument to liquids. Do not operate with wet hands.
- Service: Do not attempt to open or service the instrument yourself. Refer all servicing to qualified personnel.
- Sikring: Replace fuses only with the specified type and rating.
3. Pakkens indhold
Bekræft, at alle nedenstående varer er til stede i pakken:
- 1 x OWON SPE3103 Power Supply Main Device
- 1 x strømkabel
- 1 x Brugermanual (dette dokument)
- 1 x sikring
- 1 x testledninger
4. Produktet er slutview
4.1 Frontpanel
The front panel features the 2.8-inch TFT LCD display, control buttons, a rotary encoder, and output terminals.

Billedbeskrivelse: This image displays the front panel of the OWON SPE3103 power supply. It shows the main display screen indicating voltage and current readings, control buttons for voltage (V), current (I), OVP, OCP, Display, Memory, and On/Off. A rotary encoder is visible on the right side. Below the display are the 5V 1A USB charging port and the red (positive), green (ground), and black (negative) output terminals.
4.2 Bagpanel
The rear panel includes the AC power input, fuse holder, power switch, and cooling fan.

Billedbeskrivelse: This image shows the rear panel of the OWON SPE3103 power supply. It features a prominent cooling fan grille, an AC power input socket, a fuse holder, and a main power switch. A warning label regarding electrical shock and grounding is also visible.
4.3 Dimensioner
The unit has a compact form factor, with approximate dimensions of 82mm (Width) x 142mm (Height) x 226mm (Length).

Billedbeskrivelse: This image illustrates the dimensions of the OWON SPE3103 power supply, showing its width (82mm), height (142mm), and length (226mm). An internal view of the power supply's circuit board is also depicted, highlighting its internal components.
5. Opsætning
5.1 Strømtilslutning
- Ensure the main power switch on the rear panel is in the OFF position.
- Connect the provided power cord to the AC power input socket on the rear panel of the instrument.
- Plug the other end of the power cord into a properly grounded AC power outlet. Verify that the outlet voltage matches the instrument's rating (110Vac or 220Vac, as marked on the rear panel).
5.2 Tilslutning af testledninger
- Connect the red test lead to the red (positive) output terminal.
- Connect the black test lead to the black (negative) output terminal.
- If grounding is required for the connected load, use the green terminal.
- Connect the other ends of the test leads to your load or circuit, observing correct polarity.
6. Betjeningsvejledning
6.1 Tænd/sluk
- To power on, flip the main power switch on the rear panel to the ON position. The display will illuminate.
- To power off, flip the main power switch on the rear panel to the OFF position.
6.2 Indstilling Voltage og Nuværende
- Tryk på V knap for at vælge voltage adjustment mode. The voltage setting on the display will become active.
- Rotate the rotary encoder to adjust the desired voltage value. Press the encoder to move between digits for fine adjustment.
- Tryk på I button to select current adjustment mode. The current setting on the display will become active.
- Rotate the rotary encoder to adjust the desired current limit. Press the encoder to move between digits.
- Efter indstilling skal du trykke på Til/Fra button (output control) to enable or disable the output. The display will show the actual output voltage and current when enabled.
6.3 Over Voltage-beskyttelse (OVP) og overstrømsbeskyttelse (OCP)
The SPE3103 includes OVP and OCP functions to protect the connected load and the power supply itself.
- Tryk på OVP button to set the over voltage protection threshold. Use the rotary encoder to adjust the value.
- Tryk på OCP button to set the over current protection threshold. Use the rotary encoder to adjust the value.
- When an OVP or OCP event occurs, the output will be disabled, and an indicator will typically appear on the display.
6.4 Hukommelsesfunktioner
The power supply allows saving and recalling frequently used voltage og aktuelle indstillinger.
- Tryk på Hukommelse button to access memory functions.
- Follow the on-screen prompts to save current settings to a memory location or recall settings from a saved location.
6.5 List Waveform Editing Output
The SPE3103 supports editing and outputting up to 10 groups of timing sequences for voltage and current. Refer to the detailed programming guide (if available separately) for advanced configuration of list waveform outputs.
6.6 USB-kommunikation
The unit features a USB communication interface for remote control and data logging, supporting the SCPI (Standard Commands for Programmable Instruments) protocol. Connect the power supply to a computer using a USB cable. Install the necessary drivers and software (available from the manufacturer's website) to utilize this feature.
7. Vedligeholdelse
7.1 Rengøring
To clean the instrument, disconnect it from the power source. Use a soft, damp cloth with a mild detergent. Do not use abrasive cleaners or solvents. Ensure no liquid enters the instrument.
7.2 Udskiftning af sikringer
If the power supply does not turn on, the fuse may need replacement. Disconnect the power cord from the AC outlet. Locate the fuse holder on the rear panel. Use a suitable tool to open the fuse holder, remove the old fuse, and replace it with a new fuse of the identical type and rating (e.g., 250V, F5A for 220Vac input or 250V, F10A for 110Vac input, as specified on the unit). Close the fuse holder securely.
8. Fejlfinding
This section addresses common issues you might encounter with the SPE3103 power supply.
- Ingen strøm:
- Check if the power cord is securely connected to both the instrument and the AC outlet.
- Ensure the main power switch on the rear panel is in the ON position.
- Verify the AC outlet is functional.
- Check and replace the fuse if necessary (refer to Section 7.2).
- No Output Voltage/aktuel:
- Ensure the output is enabled by pressing the Til/Fra på frontpanelet.
- Check if OVP or OCP has been triggered. Reset if necessary.
- Verify that the test leads are correctly connected to the output terminals and the load.
- Sørg for, at sættet voltage and current limits are appropriate for the connected load.
- Ustabilt output:
- Check for loose connections in the test leads or load.
- Ensure the load is within the power supply's operating range.
- Verify proper ventilation to prevent overheating.
9. Specifikationer
The following table details the technical specifications for the OWON SPE3103 Programmable DC Power Supply. The instrument must be operated continuously for more than 30 minutes at the specified operating temperature to achieve these specifications.
| Kategori | Parameter | SPE3103 |
|---|---|---|
| Input egenskaber | Forsyning Voltage | 110Vac±15% or 220Vac±15% |
| Indgangsfrekvens | 45-65Hz | |
| Input Parameter 1 (110Vac±15%) | ||
| Input bindtagRækkevidde | 93-127Vac | |
| Fuld belastning indgangsstrøm | ≤5.6A | |
| Indgangsstrøm uden belastning | ≤300mA | |
| Indgangssikring | 250V,F10A | |
| Input Parameter 2 (220Vac±15%) | Input bindtagRækkevidde | 187-253Vac |
| Fuld belastning indgangsstrøm | ≤2.8A | |
| Indgangsstrøm uden belastning | ≤150mA | |
| Indgangssikring | 250V,F5A | |
| Nominel output | Voltage | 0-30V |
| Strøm | 0-10A | |
| Magt | 300W | |
| Effektivitet (110Vac, nominel belastning) | 80 % | |
| Regulation (CV) | Indlæs | ≤30 mV |
| Linje | ≤20 mV | |
| Effektivitet (220Vac, nominel belastning) | 85 % | |
| Regulation (CC) | Indlæs | ≤30mA |
| Linje | ≤20mA | |
| Ripple & Noise (Støjbåndbredde 20MHz, ripplebåndbredde 1MHz, tilslut 10uF elektrolytisk kondensator parallelt med 0.1uF keramisk kondensator til udgangsterminalen til test) | Voltage (Vp-p) | ≤30 mV |
| Voltage (rms) | ≤3 mV | |
| Nuværende (Ap-p) | ≤30mA | |
| Indstilling af opløsning | Voltage | 10mV |
| Strøm | 1mA | |
| Tilbagelæsningsopløsning | Voltage | 1mV |
| Strøm | 1mA | |
| Indstilling af nøjagtighed | Voltage | ≤0.1%±20mV |
| Strøm | ≤0.1 %±10mA | |
| Tilbagelæsningsnøjagtighed | Voltage | ≤0.1%±20mV |
| Strøm | ≤0.1 %±10mA | |
| Responstid | Transient recovery time (50%-100% rated load) | ≤1ms |
| Beskyttende funktion | OVP | 0-31V |
| OCP | 0-10.1A | |
| OTP | 85°C | |
| Temperaturkoefficient for output | Voltage | 100 ppm/°C |
| Strøm | 200 ppm/°C | |
| Temperaturkoefficient for tilbagelæsningsværdi | Voltage | 100 ppm/°C |
| Strøm | 200 ppm/°C | |
| Vise | Opløsning | 240 × 320 pixels |
| Farve | 65536 farve, TFT | |
| Miljø | Arbejdstemperatur | 0°C ~ 40°C |
| Opbevaringstemperatur | -20°C ~ 60°C | |
| Relativ luftfugtighed | ≤90%RH; ingen kondens | |
| Højde | 2,000 meter | |
| Køling | Ventilatorkøling, temperatur intelligent hastighedskontrol | |
| Andre | Kommunikationsport | USB communication, compatible with SCPI communication protocol |
| USB-opladningsport | 5V/1A USB opladning | |
| Dimension | 82mm (Width) × 142mm (Height) × 226mm (Length) | |
| Vægt | Ca. 1.5 kg |
Billedbeskrivelse: This section combines information from three images (512iIAsAuML.jpg, 51j+PwnHStL.jpg, 41MdcFYV4eL.jpg) to present a comprehensive technical specification table for the SPE3103 power supply. It details input characteristics, rated output, regulation, ripple & noise, resolution, accuracy, response time, protective functions (OVP, OCP, OTP), temperature coefficients, display features, environmental conditions, and other specifications like communication ports, USB charging, dimensions, and weight.
10. Garanti og support
The OWON SPE3103 Programmable DC Power Supply is manufactured by LILLIPUT. For warranty information, technical support, or service inquiries, please contact the manufacturer or your authorized distributor. Retain your purchase receipt as proof of purchase for warranty claims.





