9V 1A Power Supply SMPS Adaptor

Specifications

• Input Voltage: 100-240V AC, 50/60Hz (Universal compatibility)
• Output Voltage: 9V DC
• Max Output Current: 1A (1000mA)
• Connector Type: Male DC Barrel Jack
• Connector Size: 5.5mm (Outer Diameter) x 2.1mm (Inner Diameter)
• Technology: SMPS (Switch Mode Power Supply) - High Efficiency
• Cable Length: Approx. 1 Meter
• Working Temperature: -10°C to +50°C

Applications

• Arduino Development: The perfect companion for Arduino Uno, Mega, and Leonardo boards (via the onboard barrel jack).
• Consumer Electronics: Powers modems, routers, and set-top boxes requiring 9V 1A.
• Robotics: Ideal for driving motor shields (L293D, L298N) that require separate logic and motor power.
• CCTV & Security: Reliable power for standard analog and IP cameras.
• DIY Audio: Low-noise power for small guitar pedals or pre-amps.

Virtual Technician & Wiring Guide ⚠️

• Polarity Warning: This adapter is Center Positive. The inner pin is +9V, and the outer shell is Ground (GND). This is the standard for Arduino. Always check your device's polarity symbol before plugging in to avoid permanent damage.
• Voltage Check: This delivers a constant 9V. Do NOT use this on 3.3V or 5V devices (like raw ESP32 chips or Raspberry Pi GPIO) without a voltage regulator (like an LM7805 or Buck Converter), or you will fry them.
• Probots™ Logic-Safe advice: Always verify your board's input voltage range (usually 7V-12V for regulators).

Package Includes:

• 1 x 9V 1A Power Supply SMPS Adaptor

Note: This adapter model varies with stock and may not be same as the photo displayed. If you are looking for a specific model, please contact us and we will help you with it. We also sell a compatible female connector to plug into this adapter.

Frequently Asked Questions (FAQ)

• Will this work with my Arduino Uno R3?
  Yes, absolutely. The Arduino Uno R3 has a dedicated barrel jack input that accepts 7-12V. This 9V adapter is the ideal power source for it.
• Is the connector Center Positive or Center Negative?
  This adapter is Center Positive (+), which is the industry standard for most consumer electronics and development boards.
• Can I use this if my device needs only 500mA?
  Yes. The adapter can supply up to 1A. If your device draws only 500mA, the adapter will run cooler and work perfectly. Current is "pulled," not "pushed."
• Can I use this to power a Raspberry Pi?
  No directly. Raspberry Pi boards require 5V. Plugging 9V directly into a Pi will destroy it. You would need a Step-Down (Buck) Converter to lower the voltage to 5V.
• Does this adapter have short-circuit protection?
  Most modern SMPS adapters have basic built-in protection, but we recommend avoiding shorting the output wires to ensure longevity.
• What happens if I plug this into a 5V device?
  It will likely damage or destroy the 5V device immediately due to over-voltage. Always check the input voltage rating of your appliance.
• Is this a regulated power supply?
  Yes, being an SMPS, it provides a regulated DC output, meaning the voltage stays close to 9V even as the load changes (within the 1A limit).
• Can I use this for my guitar pedal?
  Most guitar pedals use 9V Center Negative. This adapter is Center Positive. You would need a polarity converter cable to use it with most pedals.
• What is the outer and inner diameter of the pin?
  The outer diameter is 5.5mm and the inner diameter is 2.1mm.
• Will this work with a 110V outlet (US standard)?
  Yes, the input range is 100-240V AC, so it works globally with the appropriate travel plug adapter for the physical pins.
• Can I power a DC motor directly?
  Yes, as long as the motor is rated for 9V and draws less than 1A continuous current.
• Does it come with a warranty?
  Please refer to the specific warranty policy on our website footer, but generally, manufacturing defects are covered.