Coils for Lighting
High-Efficiency Ballast & Choke Coils for Domestic, Industrial & Specialist Lighting
Anstee Coil Technology designs and manufactures custom electromagnetic ballast coils, choke coils, and inductors for domestic, industrial, and specialist lighting applications worldwide.
We specialise exclusively in bespoke electromagnetic coil components, bobbin-wound inductors, and self-supporting air coils for OEMs—we do not manufacture complete lighting luminaires or commercial light bulbs.
From high-intensity discharge (HID) and ultraviolet (UV) curing ballast assemblies to noise-suppression chokes for advanced LED driver power supplies, our coils deliver exceptional electrical efficiency, precise inductance tolerances, and long service life.
Lighting Coil Manufacturing Expertise
Lighting applications place stringent demands on coil symmetry, magnetic saturation thresholds, thermal dissipation, and acoustic noise control. Continuous operation under high current loads can lead to thermal degradation, insulation breakdown, and power loss if coils are improperly engineered.
We design and manufacture fine-gauge bobbin-wound coils, laminated core chokes, and freestanding air-core coils tailored to precise operational parameters. Utilising 3D-printed bobbin prototyping, custom potting compounds, and precision winding techniques, we provide rapid 2-day prototype dispatch for lighting OEMs in fast-moving global markets.
OEM Lighting Coil Capabilities
Vacuum Pressure Impregnation (VPI) & Epoxy Encapsulation: Applied to lock magnet wire turns permanently in place, eliminating micro-vibrations, thermal degradation, and operational acoustic hum across millions of duty hours.
Bespoke ballast coils, choke coils, and harmonic filtering inductors
Freestanding air coils (self-supporting) to eliminate core loss and current-induced saturation
Precision bobbin-mounted and laminated core coil configurations
ATEX and IECEx compliant options for hazardous atmosphere or explosive industrial lighting
High-grade enamelled magnet wire and self-bonding wire technology
Rapid prototyping via 3D printing (working prototype dispatch in as little as 2 working days)
DN standard dimensional coil options available for global equipment integration
Class H (180°C) and Class C (200°C+) insulation systems for severe thermal environments
Vacuum Pressure Impregnation (VPI) and encapsulation to eliminate hum and acoustic vibration
Integrated cabling, overmoulded terminations, and loom harnesses for direct assembly
100% quality testing, including inductance, DC resistance, surge, and Hi-Pot verification
Tailored protective packaging ensuring zero deformation or lead damage during global transit
Governing Physics: Inductive Reactance, Current Limiting & Saturation Control
The primary function of a ballast or choke coil in a lighting circuit is to regulate electrical current and suppress transient voltage spikes. The current-limiting capability of a lighting inductor is defined by its inductive reactance:
X_L = 2 · π · f · L
Where X_L is the inductive reactance (Ohms), f is the supply frequency (Hz), and L is the coil inductance (Henries). The total current (I) drawn by the circuit is regulated according to Ohm's law for AC impedance (Z):
I = V / Z = V / √(R² + X_L²)
Because gas-discharge, fluorescent, and arc-lamp circuits exhibit negative dynamic resistance, an unrestrained current would instantly destroy the lamp. Anstee Coil designs precision ballast coils with exact inductance values (L) to stabilise arc current safely. Furthermore, by utilizing freestanding air-core geometries or gapped magnetic cores, we prevent magnetic flux density (B) from reaching saturation (B_sat), ensuring stable inductance even under intense starting surge currents.
High-Performance Wiring Insulation Comparison
| Insulation Material | Thermal Rating | Key Industrial Application |
|---|---|---|
| PTFE / FEP Fluoropolymers | –65°C to +200°C | Chemical resistance, low dielectric loss, fluid immersion |
| Glass Braid / Polyimide | Up to +350°C | Extreme thermal protection, high-temperature sensor looms |
| Silicone Elastomer | –50°C to +180°C | High-flexibility routing, moisture sealing, dynamic assemblies |
Technical Specifications
| Specification Parameter | Standard Capability & Range |
|---|---|
| Coil Types | Ballast Coils, Choke Coils, Self-Supporting Air Coils, Filter Inductors, Ignition Coils |
| Winding Configurations | Precision Bobbin-Wound, Laminated Core, Freestanding Air-Core, Self-Bonding Layered Winding |
| Core Materials | Silicon Steel Laminations, Ferrite Cores, Air-Core (Zero Magnetic Core Loss), Iron Powder |
| Insulation Classes | Class B (130°C), Class F (155°C), Class H (180°C), High-Temp Class C (200°C+) |
| Acoustic & Environmental Sealing | Vacuum Pressure Impregnation (VPI), Varnish Dip, Epoxy Potting, Overmoulded Strain Relief |
| Compliance & Certifications | ATEX & IECEx (Hazardous Area Lighting), ISO 9001:2015, ISO 14001, RoHS, REACH |
| Quality Testing | 100% Inductance Tolerance, DC Resistance, Inter-Turn Surge, Hi-Pot Isolation (up to 5kV) |
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Designed for Noise-Free Efficiency & High Thermal Stability
Acoustic hum and thermal breakdown are critical challenges in industrial and commercial lighting.
By applying automated CNC layer winding, high-temperature varnish dipping, Vacuum Pressure Impregnation (VPI), and rigid epoxy encapsulation, our lighting coils eliminate micro-vibrations, maintain low Total Harmonic Distortion (THD), and operate quietly across millions of operational hours.
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Global Manufacturing & Tri-Region Supply
Anstee Coil Technology delivers custom lighting coils globally, supporting OEM clients across Europe, Asia, North America, and Latin America. We maintain uniform engineering standards, ISO 9001 quality controls, and fast delivery timelines from our manufacturing facilities located in the UK, China, and Mexico.
Frequently Asked Questions
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Freestanding air coils (self-supporting coils without a central magnetic core) eliminate magnetic core saturation and hysteresis loss entirely. This ensures linear inductance performance and high efficiency under high-current or high-frequency lighting conditions.
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We utilise automated layer winding to maintain wire tension and perform Vacuum Pressure Impregnation (VPI) or full epoxy encapsulation. This locks the magnet wire in place, suppressing the micro-vibrations caused by alternating magnetic fields.
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Yes. We design and supply encapsulated, intrinsically safe ballast and choke coils according to ATEX and IECEx standards for use in explosive atmospheres, such as offshore rigs, chemical plants, and mining operations.
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Our lighting coils are routinely manufactured with Class H (180°C) insulation, and up to Class C (200°C+) for high-wattage industrial arc lamps, UV curing units, and thermal enclosure applications.
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Yes. We manufacture fully integrated sub-assemblies, providing pre-attached high-temperature lead wires, overmoulded connectors, and custom loom harnesses ready for direct plug-and-play installation into luminaire housings.
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By combining extensive in-house stocks of magnet wire with 3D-printed bobbin prototyping, we typically produce and dispatch custom prototype lighting coils within 2 working days.
Request a Quote for Lighting Coils
If you require electromagnetic coils, ballast coils, or choke coils for lighting applications, whether for prototype development or ongoing production supply, our engineering team is ready to support your project.
Contact us to discuss your requirements or request a quote.
Contact Us
UK
E sales@ansteecoil.co.uk
T +44 (0) 1453 708900
CHINA
E sales@ansteecoil.cn
T 0519-89886850
Mexico
E sales@ansteecoil.mx
T +52 81 87480766
Did you know...
It takes more than 200 tonnes of ore to make just 72 Kg of copper wire. At least 80% of the copper ever mined has been recycled and remains available for use; naturally, our environmental policy dictates that we recycle scrap.
As well as doing this and having ISO14001 accreditation[, our products help protect environments around the world. From detecting a leaking water main to measuring the flow of life-giving water between oceans and deserts, we’re here for you…
