Toroidal Inductors: High-Performance Solutions for Power Applications
Toroidal inductors are essential components in modern power supply and conversion systems. Gowanda Electronics specializes in designing and manufacturing custom toroidal inductors that offer superior performance, compact size, and reduced electromagnetic interference (EMI).
What Are Toroidal Inductors?
Toroidal inductors are electromagnetic components built on a doughnut-shaped core. Their unique design provides several advantages over traditional inductor types:
- Compact size
- Reduced leakage inductance
- Lower electromagnetic interference (EMI)
- Improved cooling due to larger surface area
Applications for Toroidal Inductors
Toroidal inductors are widely used in various industries and applications:
- Power supplies
- DC-DC converters
- EMI filtering
- Telecommunications equipment
- Medical devices
- Aerospace and defense systems
Toroidal Inductor Design Considerations
When designing a custom toroidal inductor, several key factors must be considered:
- No-load and full-load inductance (µH)
- DC and AC current ratings (Amps)
- Operating frequency
- Core material selection
- Space limitations and mounting requirements
- Lead terminations
Our engineering team works closely with clients to optimize these parameters for each specific application.
Advantages of Toroidal Inductors
- High performance and efficiency
- Near-complete magnetic field cancellation outside the coil
- Excellent turn-to-turn coupling
- Versatility in core materials (silicon steel, nickel iron, ferrites, etc.)
- Suitable for high-power applications (up to 2 kilowatts)
Gowanda's Toroidal Inductor Capabilities
Our extensive manufacturing capabilities include:
- Foil windings
- Litz wire windings
- Perfect layering
- Sector winding
- Progressive winding
- Bank winding
- Progressive bank winding
We utilize state-of-the-art winding machines, vacuum impregnation chambers, and automated testing equipment to ensure the highest quality products.
Photo Gallery
This image is of a toroidal inductor with 2 leads showing. The tape secures the leads to the coil so that the leads do not move. The 3 toroidal cores have been secured together and have been wound with magnet wire. The completed assembly is dipped in air dry varnish and then used in a medical application.
Here we see a bin of toroidal inductors that have been wound and have leads attached to the winding. These leads will make the electrical circuit connection.
The same inductors as in the previous image are now placed in a potting cup and are ready for encapsulation, when the cup is filled with epoxy.
Conclusion
Toroidal inductors offer superior performance and efficiency for various power applications. Whether you need standard toroidal inductors or custom solutions, Gowanda Electronics has the expertise to meet your requirements. Contact our team today to discuss your toroidal inductor needs and experience the Gowanda difference in quality and innovation.
Types of Toroidal Inductors
Gowanda offers a variety of toroidal inductor configurations:
| Series | L µH | DCR Ohms | Current Rating mA DC |
|---|---|---|---|
| LCSM | 1.1 – 1950 | 0.011 – 1.70 | 0.60 – 5.40 |
SMT Toroidal Inductor
| Series | L µH | DCR Ohms | Current Rating mA DC |
|---|---|---|---|
| AT | 10 – 1000 | 0.010 – 0.240 | 1.69 – 30 |
| ATHC | 10 – 1000 | 0.008 – 0.240 | 1.69 – 14.50 |
| ATHM | 3.9 – 330 | 0.006 – 0.190 | 1.69 – 9.50 |
| ATRM | 25 – 1000 | 0.012 – 0.235 | 2.4 – 12.8 |
| ATVC | 10 – 1000 | 0.008 – 0.240 | 1.69 – 14.5 |
| GT10 | 5 – 450 | 0.030 – 0.200 | – |
| GT20 | 10 – 500 | 0.012 – 0.147 | – |
| HF | 10 – 500 | 0.050 – 1.00 | 0.503 – 2.25 |
| HT | |||
| KM | 10 – 1000 | 0.008 – 0.240 | 1.69 – 14.50 |
| KMHC | 10 – 1000 | 0.008 – 0.240 | |
| KMHM | 10 – 330 | 0.010 – 0.190 | 1.69 – 8.72 |
| KMRM | 25 – 1000 | 0.012 – 0.235 | 2.4 – 12.8 |
| KMVC | 10 – 1000 | 0.008 – 0.240 | 1.69 – 14.5 |
| PX | 75 – 470 | 0.060 – 0.400 | 1.10 – 2.83 |
Shielded Toroidal Inductor
Vertical Toroidal Inductor
| Series | L µH | DCR Ohms | Current Rating mA DC |
|---|---|---|---|
| SMP2007 | 0.15 – 15 | 0.006 – 0.060 | 1.9 – 5.9 |
Custom Toroidal Inductor Solutions
At Gowanda Electronics, we specialize in creating application-specific designs for unique requirements. Our team of experts can develop custom toroidal inductors tailored to your specific needs, ensuring optimal performance in your power supply and conversion systems.