Description

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Precision AC Voltage Control: Variable Transformer (Variac)

Unleash unparalleled control over your AC power with our premium Variable Transformer. Engineered for precision, reliability, and safety, this indispensable device allows you to smoothly and continuously adjust AC voltage from 0V up to 130V (or 250V depending on model), making it a cornerstone for laboratories, workshops, industrial applications, and advanced hobbyists.

Based on the highly efficient autotransformer principle, our Variable Transformer delivers a clean, low-distortion output waveform, ensuring your sensitive equipment operates without compromise.

Key Features:

• Stepless Voltage Adjustment: Achieve ultra-fine control with a smooth rotating knob, providing continuous voltage output from 0V to the maximum rated voltage (e.g., 0-130V AC or 0-250V AC).
• High Efficiency & Low Distortion: Operates with minimal power loss (>98%) and introduces virtually no waveform distortion, preserving the integrity of your AC signal.
• Robust & Durable Construction: Built with a high-quality toroidal copper winding, durable metal casing, and a robust carbon brush for long-lasting performance in demanding environments.
• Integrated Digital Metering (Select Models): Real-time monitoring of output voltage (Voltmeter) and current (Ammeter) via clear, bright LED/LCD displays for accurate readings.
• Overload Protection: Equipped with an integrated circuit breaker or fuse to protect the unit and connected devices from overcurrent conditions.
• Versatile Connectivity: Features standard AC outlets (NEMA 5-15R for 120V models, or universal/binding posts for higher current/voltage models) and a dedicated ground terminal for enhanced safety.
• Compact & Portable Design: Designed for convenient benchtop use, with a stable base and ergonomic carry handle (on larger models).
• Excellent Line Regulation: Maintains stable output voltage even with fluctuations in input voltage within its operational range.

Technical Specifications:

Typical Applications:

• Laboratory Power Supply: Ideal for testing circuits, components, and power supplies.
• Motor Speed Control: Precisely adjust the speed of AC motors in industrial and hobby settings.
• Lighting Dimming: Smoothly dim incandescent and halogen lighting systems.
• Heater Control: Regulate the power delivered to resistive heating elements.
• Audio Equipment Testing: Safely test amplifiers and other audio gear with controlled voltage.
• Power Tool Speed Regulation: Manage the speed of AC-powered drills, saws, and grinders.
• Transformer Testing: Evaluate the performance of transformers under varying input conditions.
• Educational & Research: Perfect for academic institutions and R&D facilities requiring adjustable AC sources.

Safety & Construction:

Our Variable Transformer is built to meet rigorous safety standards. It features a robust metal chassis with non-slip feet for stability, and a dedicated ground terminal for secure operation. The high-quality copper windings and carbon brush ensure reliable, long-term performance.

IMPORTANT SAFETY NOTE: Variable Transformers (Variacs) operate as autotransformers and do not provide isolation from the AC mains. The output neutral is typically connected to the input neutral. Always exercise caution and follow proper electrical safety procedures when working with variable AC voltage.

What's Included:

• 1x Variable Transformer Unit
• 1x Detachable AC Input Power Cord
• 1x User Manual

Invest in precision, reliability, and control. Elevate your electrical testing and power regulation capabilities with our Variable Transformer.