Variable Transformer and Voltage Regulators
Bronson Variable Transformers: Precision Voltage Control with Variac Technology

Bronson Variable Transformers, also known as Variac Transformers, are engineered to deliver precise voltage control within the range of 0-300V. These high-quality transformers allow for fine-tuning of the output voltage through a manual dial, ensuring accurate voltage adjustment for a variety of applications.
Key Features and Benefits:
Adjustable Output Voltage: Using a manual dial, the output voltage can be finely tuned to any value within the specified range, allowing for precise voltage regulation for various electrical devices and systems.
Versatile Applications: Variac transformers are essential in laboratories, testing facilities, and industrial applications where variable voltage is required. They are also crucial for audio equipment testing, motor speed control, and powering up devices needing gradual voltage increase.
Enhanced Control: The manual dial enables smooth and continuous voltage adjustment, providing users with the ability to set the desired voltage with high accuracy and precision.
Stable Output: Bronson Variac transformers are engineered to ensure a stable and consistent output voltage, even when the input voltage fluctuates. This stability protects sensitive equipment from potential damage due to voltage variations.
Robustly Built: These transformers are built to be durable and reliable. They feature robust enclosures and high-quality components to withstand rigorous use.
Safety Features: Many models come with built-in safety features such as overcurrent protection, thermal cutoffs, and grounded power cords to ensure safe operation.
By providing a reliable means to adjust and control AC voltage, Bronson variable transformers are essential tools for tasks that require precise voltage regulation and stability. Whether you need accurate voltage control for testing, calibration, or industrial processes, Bronson Variac transformers deliver the performance and reliability you need.
VC Series
Adjustable Transformers for Your Workbench
The VC Series provides a continuously adjustable output voltage ranging from 0 to 300V, allowing you to fine-tune power levels to match your specific requirements. A digital voltage display ensures accurate monitoring of the current output, while both terminal connections and a built-in socket offer flexibility for various applications. Whether in labs, workshops, or hobby environments, these rugged variable transformers are designed for continuous operation and user-friendly handling.
Key Features
Continuously Adjustable Voltage (0–300V)
Digital Voltage Display for precise monitoring
Terminal Connections & Socket for versatile usage
Sturdy Construction for long-lasting performance
Easy Operation with clear scale and intuitive controls

Use Cases
The VC Series is particularly valuable in laboratory settings, where precise voltage control is essential for testing and experimentation. In workshops, electricians and technicians can simulate different voltage levels to troubleshoot or assess equipment under real-world conditions. DIY enthusiasts and hobbyists also benefit from the adjustable output, whether carefully powering up vintage tube gear or running sensitive electronics. Throughout each task, the digital readout offers peace of mind by displaying the exact voltage at a glance.
Why Choose the VC Series?
- Accurate Voltage Regulation: The broad adjustment range lets you match output precisely to your needs.
- High Reliability: A robust design ensures stable performance over extended periods.
- Universal Connectivity: Terminal posts and a built-in socket made for quick, convenient device hookups.
- User-Friendly: The digital display and smooth adjustment mechanism simplify everyday use.
Elevate your power setup with the VC Series—the ideal variable transformer for precise voltage control across a wide range of applications.
VRG Series
Automatic Voltage Stabilizers for Stable Power Supply

The VRG Series maintains a steady 230V output even when the input voltage fluctuates between 140V and 250V. With an accuracy of ±8%, it effectively compensates for voltage variations. A digital display shows both the input and output voltage in real time, while two Schuko outlets make it easy to connect your devices without additional adapters.
Key Features
Wide Input Range (140–250V) with a regulated 230V output
±8% Accuracy for a constant, reliable power supply
Digital Readout for real-time input and output voltage monitoring
Two Schuko Outlets for direct device connection
Automatic Voltage Regulation for optimal equipment performance
Use Cases
The VRG Series is ideal for homes and offices, where sensitive electronics may be affected by power fluctuations. In workshops or studios, it helps maintain a stable supply critical for precise or delicate operations. Even in areas with inconsistent or weak grids—such as rural locations or older buildings—the VRG stabilizer ensures a dependable 230V output. With both input and output voltages displayed, users enjoy clear oversight of their power levels.
Why Choose the VRG Series?
- Reliable Voltage Stabilization: Protects your equipment from under- and overvoltage conditions.
- Easy Monitoring: Digital displays provide immediate insight into voltage levels.
- User-Friendly Setup: Two integrated Schuko outlets streamline device connection.
- Broad Input Range: Excellent solution for regions with significant voltage fluctuations.
Safeguard your electronics with the VRG Series—the automatic voltage regulator that keeps your supply at 230V and compensates for unstable inputs. perfectly suitable as Brown-Out Protection.