12V AC-DC Linear Power Supply, 500mA (0.5A), Negative Center | PV-1250N
The PV-1250N is a heavy-duty, traditional AC-DC linear power supply providing a stable 12VDC output at a maximum current of 500mA (0.5A). Built as a robust, non-regulated transformer block, it delivers exceptional reliability and low-noise electrical performance for compatible electronic devices, guitar effects, and OEM legacy gear.
Key Features & Specifications:
- Model: PV-1250N
- Input Voltage: Standard 120VAC, 60Hz domestic input configuration
- Output Performance: 12VDC @ 500mA (0.5 Amp max continuous output)
- DC Plug & Polarity: 2.1mm (ID) x 5.5mm (OD) Straight Barrel Plug, Center-Negative ( - )
- Type: Linear & Non-Regulated Power Supply
Typical Technical Applications:
A 12VDC center-negative rating with a 2.1mm plug is highly specific and critical for specialized equipment, including:
- Guitar Effects Pedals & Audio Gear: Perfect replacement transformer for larger vintage guitar effects units, multi-effects processors, and legacy analog audio gear that require a clean 12V negative-center source without high-frequency switching noise.
- Vintage & Retro Electronics: Commonly found on older consumer electronics, legacy networking routers, and 1980s/1990s desktop peripherals that utilize a traditional unregulated linear power curve.
- Laboratory & DIY Testing: An ideal low-noise component for electrical engineering benches and hobbyist prototyping where switching power supplies introduce unwanted harmonic frequencies.
Important Compatibility Notes:
- Polarity Warning: This adapter is strictly Center-Negative ( - ). Double-check your device's power port requirements before purchasing, as connecting this to a standard center-positive device can cause permanent electrical damage.
- Non-Regulated Design: Utilizing a classic copper-wound transformer design, this unit provides raw, durable linear power. Because it is a non-regulated supply, the output voltage will naturally measure higher than 12V under "no-load" (unplugged) conditions. The voltage will accurately stabilize at 12VDC once it reaches its nominal load.