7.5V 1A AC/DC Adaptor Power Supply

Specification	Details
Input Voltage	100V - 240V AC (50/60Hz)
Output Voltage	7.5V DC
Output Current	1A (1000mA) Max
Power Output	7.5 Watts
Connector Type	DC Barrel Jack (5.5mm x 2.1mm)
Polarity	Center Positive (+)

Price

₹ 105.93

(Tax included)

Barcode: 3279172

Product Description

The 7.5V 1A AC/DC Adaptor is a compact, high-efficiency switching power supply (SMPS) designed to provide a stable 7.5V DC output from standard AC wall outlets. While 5V and 12V adapters are common, 7.5V is the "sweet spot" for many electronic devices, offering enough overhead for internal voltage regulators without generating excessive heat. This adapter is a popular choice for powering weighing scales, cordless phone bases, specific networking equipment, and Arduino-based projects that require a steady power source via the DC barrel jack. Its lightweight design and regulated output ensure your sensitive electronics receive clean power with minimal ripple and noise.

Key Features

Regulated DC Output: Maintains a steady 7.5V even under varying load conditions, preventing resets or malfunctions in connected devices.
Universal AC Input: Compatible with global voltage standards (100V–240V), making it suitable for use with travel converters or different regional power grids.
Energy Efficient SMPS: Advanced switching technology ensures high power conversion efficiency and low standby power consumption.
Standard 5.5mm x 2.1mm Plug: The most common DC jack size, ensuring out-of-the-box compatibility with a vast range of consumer and hobbyist electronics.
Integrated Safety Protection: Features built-in over-voltage, over-current, and short-circuit protection to safeguard both the adapter and your expensive hardware.

Technical Details

Case Material: High-grade Flame Retardant ABS Plastic.
Cable Length: ~1 Meter.
Indicator: Power-on LED (Batch dependent).

Prototyping and Engineering Tips from Robogears

The Arduino Efficiency Secret: CRITICAL: While you can power an Arduino with 9V or 12V, using a 7.5V adapter is often the most efficient choice. The Arduino’s onboard 5V regulator has to "drop" less voltage (only 2.5V compared to 7V from a 12V source), which significantly reduces the heat generated by the regulator and extends the life of your board.
Understanding Amperage: This is a 1A (1000mA) adapter. It can safely power any 7.5V device that requires less than 1A (e.g., 200mA, 500mA, or 800mA). The device will only draw what it needs. However, do not use this for devices requiring more than 1A, as the adapter may overheat or shut down.
Polarity Verification: Before plugging in, always check the label on your device for the polarity symbol. If your device requires Center Negative, this adapter will not work without a polarity reverser cable. Using the wrong polarity can instantly destroy the internal circuitry of your project.
Voltage "Sag": If you are using a very long extension cable with this adapter, you may experience a slight voltage drop. For high-precision analog sensors, always measure the voltage at the end of the line to ensure you are still receiving the required 7.5V.
Maintenance: Avoid tightly coiling the DC cable when storing, as this can cause internal wire fatigue near the stress-relief points, leading to intermittent power issues over time.

Package Includes

1 x 7.5V 1A AC/DC Adaptor Power Supply

Disclaimer: Product images are shown for illustrative purposes only. The exact color of the knobs or the branding placement on the chassis may vary slightly between manufacturing batches, but all technical specifications and performance standards remain as described. This disclaimer also applies to any included accessories such as nozzles and stands.

Safety Warning: Indoor use only. Do not expose the power supply to moisture or high-humidity environments. Always disconnect the adapter from the AC mains when not in use for extended periods. Ensure the total load does not exceed the 1000mA rating to prevent thermal failure.