12V 800mA AC-DC Linear Power Supply, Negative Center | PV-12800NL
The PV-12800NL is a linear AC-DC power supply delivering 12VDC at up to 800mA through a 2.1mm x 5.5mm barrel plug. Important: this model is wired CENTER NEGATIVE. It must not be substituted for a center-positive adapter.
Technical Specifications
- Model: PV-12800NL
- Input: 120VAC
- Output: 12VDC
- Maximum current: 800mA
- Connector: 2.1mm ID x 5.5mm OD barrel plug
- Polarity: Center negative
- Power-supply type: Linear AC-DC
Compatibility Requirements
Before ordering, confirm that the equipment requires 12VDC, draws 800mA or less, accepts a 2.1mm x 5.5mm barrel plug, and is wired center negative. All four specifications must match. Do not rely on voltage alone.
Do not use this adapter with center-positive equipment. Reversed polarity can prevent operation or damage connected equipment. Also do not use it with equipment requiring AC output, another voltage, a different connector size, or more than 800mA.
Frequently Asked Questions
Is the PV-12800NL center negative?
Yes. The center contact is negative and the outer barrel is positive. Confirm that the polarity symbol on your equipment shows the same arrangement.
Can this replace a center-positive 12V adapter?
No. This power supply is center negative and must not be used as a direct replacement for a center-positive adapter.
Can this replace any 12V adapter?
No. The device must require 12VDC, draw no more than 800mA, accept a 2.1mm x 5.5mm plug, and use center-negative polarity.
Can I use it with equipment rated below 800mA?
Yes, if the equipment requires 12VDC and draws 800mA or less, and its connector dimensions and center-negative polarity also match.
Can I use it with equipment requiring more than 800mA?
No. Choose a correctly matched 12VDC center-negative power supply rated for at least the current required by the equipment.
Is the output AC or DC?
The output is 12VDC. The input is 120VAC.
How do I verify compatibility?
Check the equipment label or manual for AC versus DC, voltage, required current, connector inside and outside diameters, and polarity. Every specification must match before connection.
