Xi'an, Shaanxi, China · OEM / ODM Transformer & Power Supply Manufacturer [email protected]  |  ✔ Intertek-Verified Supplier
Home > Products > Low Frequency Transformer

Low Frequency Transformer

Custom 50/60Hz EI Laminated Transformers, PCB Encapsulated Power Converters & Isolation Magnetics Built by Shaanxi Zelqo Power Co., Ltd.

Total Displayed: 16 Popular Models
CE / LVD Certified FCC Compliant 100% Hi-Pot Tested
CE / LVDFCC
220V 50Hz Single Phase EI Transformer Power Transformer 110v 220v 380v

220V 50Hz Single Phase EI Transformer Power Transformer 110v 220v 380v

$1.50 - $5.00 Min. Order: 5 pcs
Contact Us
CE / LVDFCC
110V-240V AC 40VA EI Single Phase Low Voltage Power Transformer

110V-240V AC 40VA EI Single Phase Low Voltage Power Transformer

$3.00 - $10.00 Min. Order: 10 pcs
Contact Us
CE / LVDFCC
220V 50Hz Single Phase EI Transformer 12V 5W Output Vertical Mount

220V 50Hz Single Phase EI Transformer 12V 5W Output Vertical Mount

$1.50 - $5.00 Min. Order: 5 pcs
Contact Us
CE / LVDFCC
EI 35 Power Trafo Transformer 12V 24V 110V 220V

EI 35 Power Trafo Transformer 12V 24V 110V 220V

$3.00 - $10.00 Min. Order: 100 pcs
Contact Us
CE / LVDFCC
220V 50Hz 240v 9v 1.9v Ei28 Ei30 EI Transformer Power Transformer

220V 50Hz 240v 9v 1.9v Ei28 Ei30 EI Transformer Power Transformer

$0.75 - $4.85 Min. Order: 5 pcs
Contact Us
CE / LVDFCC
Ei57 Series 11.5V Electronic Transformer

Ei57 Series 11.5V Electronic Transformer

$3.00 - $10.00 Min. Order: 100 pcs
Contact Us
CE / LVDFCC
EI 10VA-50VA Voltage Transformer Pure Copper Core

EI 10VA-50VA Voltage Transformer 220V to 6V-24V Pure Copper Core

$3.00 - $10.00 Min. Order: 100 pcs
Contact Us
CE / LVDFCC
Step Down EI Power Transformer 230V AC to 11.5V 500ma 60W

Step Down EI Power Transformer 230V AC to 11.5V 500ma 60W

$1.50 - $5.00 Min. Order: 100 pcs
Contact Us
CE / LVDFCC
Ei86 Power Isolation Transformer 120va 220v 240v

Ei86 Power Isolation Transformer 120va 220v 240v 230v to 24v 12v

$3.00 - $10.00 Min. Order: 5 pcs
Contact Us
CE / LVDFCC
Customization Low Frequency Transformer 220v 12v for Audio

Customization Low Frequency Transformer 220v 12v for Audio

$3.00 - $10.00 Min. Order: 5 pcs
Contact Us
CE / LVDFCC
EI-35 12V 220V 15Va 20va Step Down Power Transformer

EI-35 12V 220V 15Va 20va Step Down Power Transformer

$1.50 - $5.00 Min. Order: 5 pcs
Contact Us
CE / LVDFCC
220v 12v 5v EE16 EE19 EE25 High Frequency Transformer 24v

220v 12v 5v EE16 EE19 EE25 High Frequency Transformer 24v

$1.50 - $5.00 Min. Order: 5 pcs
Contact Us
CE / LVDFCC
12V EI30 12.5 30VA PCB Mini Encapsulated EI Power Transformer

12V EI30 12.5 30VA PCB Mini Encapsulated EI Power Electronic Transformer

$0.20 - $1.30 Min. Order: 100 pcs
Contact Us
CE / LVDFCC
Low Frequency 50Hz 220V to 110V 1500W Electric Power Transformer

Low Frequency 50Hz 220V to 110V 1500W Electric Neon Sign Power Transformer

$3.00 - $10.00 Min. Order: 100 pcs
Contact Us
CE / LVDFCC
115V 230V Step Down AC Low Frequency Encapsulated PCB Audio Transformer

115V 230V EI Step Down AC Low Frequency Encapsulated PCB Audio Transformer

$0.20 - $1.30 Min. Order: 100 pcs
Contact Us
CE / LVDFCC
EI20 EI30 230V 50HZ 60HZ Low Frequency PCB Mounted Encapsulated EI Transformer

EI20 EI30 230V 50HZ 60HZ PCB Mounted Encapsulated EI Transformer

$0.20 - $1.30 Min. Order: 100 pcs
Contact Us
Production & Quality Control

Standardized Transformer Fabrication Line

Full process control from core winding and insulation to computerized testing and protective packing.

Precision coil winding process
Winding Process
Automated material cutting
Material Cutting
Core insulation assembly
Core Insulation
Primary coil winding line
Primary Winding
Lead wiring and soldering
Wiring Process
Inter-turn insulation testing
In-Process Testing
Semi-finished transformer testing
Semi-finished Test
Full-load aging chamber
Aging Test
Final goods quality inspection
Final Inspection
Export carton packaging
Shockproof Packing
Batch pallet packing
Export Palletizing
Production positioning fixture
Assembly Fixtures
High-speed cutting machine
Cutting Instruments
CNC transformer winding machine
CNC Winding Lines
Circular toroidal winding machine
Circular Winders
Automatic insulation wrapping machine
Wrapping Machines
Multi-axis bobbin winder
Bobbin Winders
Industrial pipe and sleeve cutter
Sleeve Cutter
Pneumatic terminal crimping machine
Terminal Crimping
High precision digital power meter
Digital Power Meter
Pure AC power source for testing
AC Power Source
Digital LCR bridge meter
LCR Bridge Tester
DC low resistance tester
DC Low Resistance
Impulse winding tester
Impulse Tester
Dielectric breakdown hi-pot tester
Hi-Pot Tester
Engineering Rigor

Custom Design & Verification Advantages

Why worldwide equipment manufacturers choose Shaanxi Zelqo Power Co., Ltd.

Tailored Core & Bobbin

Choose between grain-oriented silicon steel or standard laminations with vertical, horizontal, chassis-mount brackets or PCB pin bobbins precisely dimensioned to your housing.

Comprehensive Dielectric Testing

Every unit undergoes 100% dielectric withstand testing (Hi-pot up to 4000V AC) between primary and secondary, ensuring total galvanic isolation and operator safety.

Low Hum & High Efficiency

Optimized turns ratio and precision vacuum varnishing minimize magnetostriction hum, no-load losses, and temperature rise across 50Hz, 60Hz, or dual-frequency grids.

Need a Customized Low Frequency Transformer Quote?

Send your input/output voltages, power rating (VA), frequency, mounting dimensions, and quantity requirements to our senior engineering team.

Contact Us