ແນະນຳ
This manual provides essential information for the safe and effective use of the Velleman WMPC124 1A Power Supply Module. This module is designed to convert an AC or DC input voltage into a stable, adjustable DC output voltage, suitable for various electronic projects and experiments. Please read these instructions carefully before installation and operation.
ຄໍາແນະນໍາຄວາມປອດໄພ
- Always disconnect power before making any connections or adjustments to the module.
- ໃຫ້ແນ່ໃຈວ່າ input voltage and current ratings do not exceed the module's specifications.
- Observe correct polarity for DC input and output connections.
- ຫຼີກລ່ຽງວົງຈອນສັ້ນຢູ່ຂົ້ວຕໍ່ອອກ.
- This module is intended for use by individuals with basic knowledge of electronics. If unsure, seek professional assistance.
- ຢ່າໃຫ້ໂມດູນຖືກຄວາມຊຸ່ມຊື່ນ, ອຸນຫະພູມທີ່ຮຸນແຮງ ຫຼື ສະພາບແວດລ້ອມທີ່ກັດກ່ອນ.
ສິນຄ້າເກີນview
The Velleman WMPC124 is a compact, assembled, and tested power supply module. It features input and output screw terminals for secure wiring and a potentiometer for adjusting the output voltage.

ຮູບທີ 1: ທາງເທິງ view of the WMPC124 module. Note the input terminals on the right, output terminals on the left, and the voltage adjustment potentiometer at the bottom-left.

ຮູບທີ 2: ມຸມ view of the WMPC124 module, showing component layout.
ຂໍ້ມູນຈໍາເພາະ
| ຄຸນສົມບັດ | ມູນຄ່າ |
|---|---|
| ຜົນຜະລິດຂັ້ນຕ່ໍາ Voltage | 1.2 ວ |
| ປະຈຸບັນຜົນຜະລິດສູງສຸດ | 1 ກ |
| ຜົນໄດ້ຮັບສູງສຸດ Voltage | 30 VDC |
| ປະລິມານການປ້ອນຂໍ້ມູນສູງສຸດtage | 24 VAC ຫຼື 35 VDC |
| ລະດັບທັກສະ | Assembled and Tested |
| ວັດtage | 15 ວັດ |
| ການປ້ອນຂໍ້ມູນ Voltage (AC) | Up to 24 Volts (AC) |
| Ampອາຍຸ | 1 Amps (ຜົນຜະລິດ) |
| ຜົນໄດ້ຮັບ Voltage (DC) | ສາມາດປັບໄດ້ຈາກ 1.2V ຫາ 30V |
| ຂະໜາດ | 3.5 x 7.5 x 15.5 cm |
| ນ້ຳໜັກ | 60 g |
ຕັ້ງຄ່າ
1. Transformer Selection
The WMPC124 module requires an external AC transformer or a DC power source. The choice of transformer depends on the desired DC output voltage. Refer to the table below for guidance:

Figure 3: Transformer rating guide.
Recommended Transformers:
- For 3-6VDC output: 9Vac transformer (e.g., 109010C: OPEN-FRAME TRANSFORMER 10.8 VA 1 x 9 V~ 1200 mA max.)
- For 6-9VDC output: 12Vac transformer (e.g., 112012C: OPEN-FRAME TRANSFORMER 12 VA 1 x 12 V~ 1000 mA max.)
- For 9-12VDC output: 15Vac transformer
- For 12-15VDC output: 18Vac transformer
- For 15-21VDC output: 24Vac transformer (e.g., 212024C: OPEN-FRAME TRANSFORMER 24 VA 2 x 12 V~ 1000 mA max.)
2. ການເຊື່ອມຕໍ່ສາຍໄຟ
- ການເຊື່ອມຕໍ່ຂາເຂົ້າ: Connect your chosen AC transformer (or DC power source) to the ປ້ອນຂໍ້ມູນ screw terminals on the right side of the module. Ensure the input voltage does not exceed 24 VAC or 35 VDC. For AC input, polarity is not critical. For DC input, observe the '+' and '-' markings if present, though the module's rectifier bridge allows for some tolerance.
- ການເຊື່ອມຕໍ່ຂາອອກ: Connect your load (e.g., DC motor, low-voltage light bulb, project circuit) to the ອອກ screw terminals on the left side of the module. Observe the '+' and '-' polarity markings carefully.
3. Initial Adjustment
Before applying power to your load, it is recommended to set the output voltage to its minimum. Use a small screwdriver to turn the potentiometer (labeled 'Vout Adj.') fully counter-clockwise. This will set the output to approximately 1.2V.
Operating the Module
- ເປີດ: Once all connections are secure and verified, apply power to the input terminals.
- ປັບຜົນຜະລິດ Voltage: Connect a multimeter to the output terminals to monitor the voltage. Slowly turn the potentiometer clockwise to increase the output voltage to your desired level (between 1.2V and 30V).
- ຂໍ້ຈໍາກັດໃນປະຈຸບັນ: The module is rated for a maximum output current of 1A. Do not exceed this limit to prevent damage to the module or connected devices.
- ປິດພະລັງງານ: Disconnect the input power when the module is no longer needed.
ບໍາລຸງຮັກສາ
- ຮັກສາໂມດູນໃຫ້ສະອາດ ແລະ ບໍ່ມີຝຸ່ນ ແລະ ສິ່ງເສດເຫຼືອ. ໃຊ້ຜ້າອ່ອນ ແລະ ແຫ້ງເພື່ອທຳຄວາມສະອາດ.
- Regularly inspect all wiring connections to ensure they are tight and secure.
- ເກັບຮັກສາໂມດູນໄວ້ໃນສະພາບແວດລ້ອມແຫ້ງ ແລະ ເຢັນເມື່ອບໍ່ໄດ້ໃຊ້ງານ.
- Avoid physical shock or excessive vibration.
ການແກ້ໄຂບັນຫາ
- ບໍ່ມີ Output Voltage:
- Check if input power is correctly applied and within specifications.
- Verify input and output wiring for correct connections and polarity.
- Ensure the potentiometer is not set to its absolute minimum (though it should still provide ~1.2V).
- Inspect for any visible damage to components (e.g., burnt resistors, bulging capacitors).
- ລະດັບສຽງອອກບໍ່ຖືກຕ້ອງtage:
- Recalibrate the output voltage using a multimeter and the potentiometer.
- ຮັບປະກັນການປ້ອນຂໍ້ມູນ voltage is stable and sufficient for the desired output.
- ການໃຫ້ຄວາມຮ້ອນເກີນໂມດູນ:
- Reduce the load current to stay within the 1A maximum.
- ຮັບປະກັນການລະບາຍອາກາດຢ່າງພຽງພໍອ້ອມຮອບໂມດູນ.
- ກວດສອບການປ້ອນຂໍ້ມູນ voltage is not excessively high for the desired output, leading to higher power dissipation.
ການຮັບປະກັນແລະການສະຫນັບສະຫນູນ
For warranty information or technical support, please refer to the documentation provided with your purchase or contact your retailer or the manufacturer, Velleman, directly. Keep your proof of purchase for any warranty claims.
Velleman Contact Information: Please visit the official Velleman website for the most up-to-date support and contact details.





