200VA 300VA 500VA High Power Toroidal Transformer For Audio Amplifier And UPS
The T110 Toroidal Transformer is a high-performance power solution engineered for precision electronics and high-fidelity audio systems. Built on a standardized T110 seamless ring core (typically 110mm outer diameter), this transformer is designed to handle power capacities ranging from 200VA to 500VA. Its continuous magnetic path and symmetrical winding make it a far more efficient and compact alternative to traditional EI-frame transformers, offering superior electrical performance in a fraction of the space.
| Parameter | Typical Value / Spec |
|---|---|
| Core Type | T110 Toroidal (Seamless Ring Core) |
| Mounting Type | Single Bolt Center Mounting |
| Mounting Kit | Rubber Pads / Steel Plate / Bolt & Nut |
| Dimensions | Approx. OD 110mm x Height 45-60mm (Customizable) |
| Power Rating | 200VA / 300VA / 400VA / 500VA (Typical) |
| Operating Frequency | 50Hz / 60Hz |
| Primary Voltage (Input) | 110V / 220V / 230V / 240V AC |
| Secondary Voltage (Output) | Customizable (e.g. 12V / 24V / 36V / 48V) |
| Hi-Pot (Isolation) | 3.0KV - 4.0KV AC / 1min |
| Efficiency | 96% - 98% (Typical) |
| Core Material | Cold-Rolled Grain Oriented (CRGO) Silicon Steel |
| Stray Magnetic Field | Ultra-low (Self-shielding) |
| Winding Material | 100% Pure Copper (Electrolytic) |
| Insulation Class | Class B (130°C) / Class F (155°C) |
| Thermal Protection | Optional Thermal Switch / Fuse |
| Operating Temp | -10°C to +40°C (Full Load) |
| Compliance | CE, RoHS, UL recognized, ISO9001 |
- Seamless CRGO Core: Utilizes high-permeability, cold-rolled grain-oriented (CRGO) silicon steel ribbons, wound into a continuous jointless ring to maximize magnetic flux efficiency.
- 100% Pure Copper Windings: Features high-grade electrolytic copper wire distributed uniformly over the entire core surface, ensuring low DC resistance and excellent thermal balance.
- Double Insulation System: Primary and secondary windings are separated by multiple layers of high-dielectric polyester film (Mylar), providing high isolation and long-term reliability.
- Low Profile & Space-Saving: The "donut" shape allows for a significantly lower vertical height compared to laminated transformers, ideal for 1U or 2U rack-mount equipment.
- Integrated Thermal Protection: Available with optional auto-reset thermal switches or one-shot thermal fuses to protect the unit against prolonged overloads.
Answer: In an EI transformer, the magnetic flux must jump across air gaps at the joints of the "E" and "I" laminations, causing flux to "leak" into the surrounding environment as an electromagnetic hum. The T110 toroidal core is seamless and jointless, meaning the magnetic path is entirely contained within the ring. Furthermore, since the copper windings cover the entire core, they act as a natural shield, effectively "trapping" the magnetic field. This results in an 8:1 to 10:1 reduction in stray magnetic fields, which is essential for preventing noise interference in sensitive audio pre-amps, medical sensors, and high-gain circuits.
- Hi-Fi & Professional Audio: Powers high-end stereo amplifiers, mixing consoles, and signal processors where a black background (zero hum) is mandatory.
- Medical Diagnostic Equipment: Used in devices requiring low leakage current and high safety isolation according to medical standards.
- Industrial Automation: Provides clean power for stepper motor drivers, PLCs, and precision robotic controllers.
- Lighting Systems: Ideal for powering low-voltage halogen lamps or constant-voltage LED arrays where compact size and silent operation are required.
Answer: Because toroidal cores like the T110 have exceptionally high permeability and low remanence, they can draw a massive instantaneous surge current (up to 10-20 times the rated current) if the power is applied at the zero-crossing point of the AC cycle. For T110 units at the upper end of the power scale (e.g., 500VA), we recommend using a NTC Thermistor or a dedicated Soft-Start Circuit in series with the primary winding. This limits the initial current spike, prevents the nuisance tripping of circuit breakers, and protects the bridge rectifiers in the secondary DC stage.
- Extreme Energy Efficiency: Achieving up to 98% efficiency, the T110 minimizes energy waste as heat, allowing for cooler operation and extended component lifespan.
- Silent Performance: The lack of loose laminations and the vacuum-impregnated structure eliminate mechanical humming and vibration, making it suitable for silent-operation environments.
- Significant Weight Savings: Toroidal transformers are typically 40% to 50% lighter than EI transformers of equivalent power rating, drastically reducing the shipping costs and the structural requirements of the enclosure.
- Simple Mounting System: Secured with a single center bolt and heavy-duty rubber pads, the T110 is quick to install and offers excellent resistance to minimize mechanical stress on the PCB assemblies a clean, professional, industrial aesthetic.
Chipsen Electronics Technology Co., Ltd., established in 2000, is a specialized manufacturer of high frequency transformer, low frequency transformer, toroidal inductor, SMD power inductor, super high current inductor, choke coil and switch. Chipsen has got a good reputation in domestic and oversea markets which include North & South America, Europe and Southeast Asia.
Chipsen possesses a professional management team, as an ISO9001, ISO14001 & IATF16949 audited company, which always commits to producing environmental protection and qualified products. Our products are certified by UL Class B/Class F/Class H, CQC and RoHS, and obtained 21 patents.
These achievements mainly come from our strong R&D team, providing various solutions for temperature decreasing, noise cancellation and coupled radiation conductivity. Our products widely used in various fields of new energy, PV, UPS, Robotics, smart home, security systems, health care and communication.
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