Transformer 9V(500mA)

Original price was: ₹70.00.Current price is: ₹66.50.

The 9V (500mA) Transformer converts high-voltage AC to a stable 9V AC output, suitable for low-power applications. It handles up to 500mA of current, making it ideal for small electronic devices and circuits. Its reliable construction ensures consistent performance and safe operation in various low-power setups.

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Sold By : Computronics Lab - Electronic and Robotic Components SKU: transformer-9v500ma Category:


Transformer 9V(500mA)


The Transformer 9V(500mA) is a vital component in electronic circuits, designed to step down high-voltage AC power to a stable 9V AC output. With a current rating of 500mA, this transformer is suitable for powering various low-power electronic devices and circuits.


  1. Voltage Rating
    • Primary Voltage: Transformer 9V(500mA) is built to handle standard high-voltage AC inputs, which typically range from 120V or 240V AC, depending on the regional electrical standards.
    • Secondary Voltage: It provides a regulated 9V AC output, essential for circuits and devices that require this specific voltage level.
  2. Current Rating
    • Current Capacity: Capable of supplying up to 500mA (0.5A) of current. This rating is ideal for low-power applications, ensuring efficient operation without overloading.
    • Power Rating: The transformer can handle up to 4.5 watts of power (9V x 0.5A), making it suitable for small electronic devices and circuits.
  3. Frequency
    • Operating Frequency: Designed for standard mains frequencies, which are generally 50Hz or 60Hz, based on the geographical location.

Construction and Design

  1. Core Material
    • Type: Uses a high-quality laminated silicon steel or ferrite core to enhance efficiency and minimize energy losses.
    • Design: The core is engineered to provide effective magnetic flux transfer between the primary and secondary windings.
  2. Windings
    • Primary Winding: Constructed with durable wire to handle high-voltage input and ensure long-term reliability.
    • Secondary Winding: Wound with precision to deliver a consistent 9V AC output, ensuring accurate voltage conversion.
  3. Insulation
    • Material: Features high-quality insulation materials to prevent electrical shorts and enhance safety.
    • Protection: Built to manage voltage stress and prevent overheating, ensuring reliable operation.


  1. Electronic Devices
    • Low-Power Applications: Powers small electronic devices, including sensors, LED lights, and low-power circuits that require 9V AC.
  2. Charging Circuits
    • Small Chargers: Used in circuits that convert 9V AC to DC for charging batteries or powering components.
  3. Industrial Use
    • Signal Isolation: Employed where electrical isolation is needed to reduce noise and ensure stable performance.
  4. Consumer Electronics
    • Device Powering: Ideal for powering various consumer electronics operating on 9V AC.


  1. Efficiency
    • Stable Output: Delivers a consistent 9V AC output, crucial for reliable operation of connected devices.
    • Low Power Loss: Designed to minimize energy losses, improving overall efficiency.
  2. Safety
    • Built-in Protection: Includes features to protect against overvoltage and overheating.
    • Insulation: Ensures safe operation by preventing electrical shorts and enhancing durability.
  3. Compact Design
    • Space-Efficient: Typically compact and easy to integrate into various applications and setups.


The 9V (500mA) Transformer provides a reliable solution for converting high-voltage AC to a stable 9V AC output. Its low power rating makes it ideal for small electronic devices, charging circuits, and other low-power applications. With its efficient design and robust construction, it ensures consistent performance and safety.

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