Ferroresonant Transformers
Ferroresonant Transformers
Using a magnetic structure and a capacitor, ferroresonant transformers provide regulated output voltage, current limiting, and other benefits. They are designed with a core, a primary winding, two secondary windings, and a magnetic shunt, making conventional ferroresonant transformers independent of electronic control circuits.
General Transformer manufactures ferroresonant transformers designed to meet your specific application needs. Whether you need a quasi-square wave output or a low distortion sine wave, we offer full custom designs.
Industrial Application Advantages of Ferroresonant Transformers
Ferroresonant transformers, also known as constant voltage transformers (CVTs), provide a range of benefits, including—but not limited to—regulation. Ferros offer current limiting, meaning if an extreme overload or even a short circuit is applied, the secondary current is limited to a safe level, and the primary current is lower than at normal full load.
Ferros protect sensitive loads from disturbances like noise, transients, and surges. Because they are designed with a low-pass filter, ferroresonant transformers can suppress transient and surge voltages. They can also “ride through” brief power outages of one-half cycle without losing output voltage.
Other benefits of ferroresonant transformers include:
- Fixed output voltage
- Rugged and reliable
- Adjustable output voltage (controlled ferros only)
- High levels of isolation
- Quasi-square wave output waveform reduces filtering requirement for d-c applications
- Low distortion sine wave output available for a-c load applications
Ferroresonant Transformer Custom Design Applications
Ferroresonant transformers are found in a wide variety of industries, helping to control voltage sags and power surges. For applications ranging from telecommunications to scientific equipment, ferroresonant transformers offer reliable regulation even under extreme operating conditions.
Applications of ferroresonant transformers include:
- Line conditioners to protect computers and other sensitive electronic devices from transients, noise, and surges on the power line
- Power supplies
- Battery chargers
- Inverters
- Lighting
