P2a 15W DC Linear Power Supply w/ 5V Output USB Ports (UMI Transformer & without Voltage Display)

P2a 15W DC Linear Power Supply w/ 5V Output USB Ports (UMI Transformer & without Voltage Display)

Reasons to Choose Our Product:
1. LBO silver contact panel switch is more user-friendly than rear panel switches.
2. The output ports are two USB sockets.
3. Onboard X and Y capacitors and flat copper wire inductors form a complete EMI filtering circuit.
4. Independently developed 1-inch voltage display screen (optional).
5. Ultra-low ripple circuit composed of precision reference, high-speed operational amplifiers, and MOSFET output transistors.
6. Thick-film resistors from JLCPCB, original capacitors for Samsung, and original diodes for SHIKUES.
7. Original audio-grade low-leakage current, low ESR through-hole filter capacitors for ELNA and Nichicon.
8. Multiple plug specifications available.

Architecture Overview:
* EPCOS film capacitors for Siemens
* Wafer resistors for BC Vishay
* TL431 reference voltage circuit
* MOSFET voltage regulation circuit
* Main filter capacitors for ELNA
* EMI filtering circuit
* Japanese output filter capacitors for Nichicon
* Schottky diodes
* Sealed transformer (for UMI or Talema)

Filter Capacitors:
* Uses Japanese gold FW audio series capacitors for Nichicon.
* The array of four secondary main filter capacitors ensures clean and transparent output current.
* Six BT series tertiary CLC type filter architecture capacitors (for Nichicon) provide a cleaner and purer background noise, enhancing the dynamic range and power of the music.

Audiophile Components:
* Features ultra-low internal resistance MOSFETs for Infineon, film non-polar capacitors for Vishay BC, German high-precision low-temperature drift military-grade wafer resistors for Vishay, and adjustable potentiometer for Bourns.
* Resistors for Vishay offer low noise coefficient, high thermal stability, and excellent inductive and capacitive characteristics, improving current quality and significantly enhancing sound quality.

EMI Filtering:
* Safety X capacitors are added between the live and neutral lines, and safety Y capacitors are added between the live and ground lines.
* These capacitors help suppress grid noise, higher-order harmonics, and noise and high-frequency harmonics generated by switch-mode power supplies, motors, and other sources. They improve the purity of the audio signal and reduce noise caused by AC power interference.
* The complete EMI filter capacitors include two X capacitors, two Y capacitors, and one flat copper inductor.

Audio Components:
* The output sockets use two Foxconn USB sockets; the input socket is manufactured in Taiwan.
* The high-end version uses an imported transformer for Talema.
* No vibration: The transformer is encapsulated with epoxy resin, which reduces electromagnetic interference and magnetic leakage, while also eliminating the transformer's buzzing noise.

Circuit Structure:
* The circuit uses the high-performance TL431 precision reference voltage, high-speed operational amplifiers, and MOSFET power transistors for ultra-low noise DC voltage regulation with a 3-stage filtering process.
* The Taiwan SHIKUES diodes ensure a cleaner image, richer audio detail, and a darker, purer background.

Rear Panel Description:
1. When the output voltage is 5V, there are two USB ports on the rear panel by default.
2. The input socket includes a fuse (1A/5x20mm). The fuse can be replaced by removing it from the bottom.
3. The Adj circular hole is the output voltage fine-tuning knob. Using a flathead screwdriver, turning the knob clockwise will increase the output voltage.

Specifications:
* Model: P2a
* Dimensions: 105mm x 150mm x 50mm (WxDxH)
* Weight: 1004g
* Input Power: 15W
* Input Voltage: 220V or 110V
* Output Voltage: 5V
* Output Interface: 5.5-2.1 + 2.5 (inner positive, outer negative)
* Fuse: 1A (5x20mm)
* Transformer: UMI
* Ripple Noise: < 1mV
* Adjustable Voltage: ≈ 0.5V
* Power-On Method: Panel button for power on/off

Package Included:
* 1 x Main unit
* 1 x AC power dable (US, UK or EU Standard)
* 1 x DC output cable (5.5-2.5 to 5.5-2.1)
* 1 x Product quality certificate
* 1 x Warranty card
    
Packaging Details:
* Weight: 1.52kg

Note:
* Electronic components may vary periodically, and we will replace them with components of equivalent quality. The images are for reference only, and changes will not be separately notified. Please refer to the actual product.
* Please contact customer service to obtain the electronic version of the manual after purchasing the product. Thank you!