Our Website is AODA Accessible. Learn More About Compliance Efforts

man working on machine


Leading-Edge Materials and Engineering

Transformers that Perform


We provide efficient transformers for a wide range of industries, from high tech to industrial. From concept through delivery, we collaborate with our customers to minimize risk and provide carefully constructed transformers with fine attention to specification. Our reliable, innovative designs are all backed with a 5-year warranty.


Need a bit more info before sending us your specs? Learn more about our Capabilities.


Transformer Capabilities at Electronic Craftsmen


  • Power: From mW to 50kVA @ 60Hz or up to 200kVA @ 20kHz (typical)

  • Working Voltage up to 12kV (depending on frequency); multiple stages possible for higher outputs

  • Frequency: 25Hz to 500kHz (typical)

  • Temperature Class to 220C (155C / Class F typical)

  • Weight: 0.06 oz / 1g to 550 lbs / 250kg

  • Multiple taps as required

  • Dielectric Strength (hipot) to 30kVac or 20kVdc

  • Parts can be vacuum varnished or molded with a variety of hard or soft encapsulant materials with thermal conductivity.

  • Wire sizes from 1-45 AWG or Copper Foil to 0.050in thick (in multiple layers for higher current); Litz wire for higher frequency

  • Regulation to specification

  • Manufactured using all known state-of-the-art magnetic core materials, including but not limited to electrical grade steel laminations, ferrites & powdered iron, nickel-iron alloy, iron amorphous metal strip-wound cores, nanocrystalline cores and small toroids.

  • Antifungal and non-nutrient coating available

  • Corrosion resistant coating & plating available

  • Standard or custom terminations & leads

  • Mounting Configurations: pcb-mount (horizontal or vertical), custom or standard brackets or stacked configurations

  • Designed to meet CSA & UL, IEC Standards for safety or MIL PRF 27 (aerospace / military) requirements upon request

  • MIL PRF 27 Grade 5 & 6 encapsulation available


Click on the Product Categories to request a Quote


Current Sense Transformer


Current Sense Transformer

Unique current transformer designs for applications including instrument control & monitoring, switch mode power supply control and feedback for equipment protection. Materials are chosen to optimize performance and reduce cost.



Power Transformers


Power Transformers

A superior quality assurance program and an express delivery produces top-rated power transformer products with exceptional PPM (parts per million) performance. We work with you to build a component that perfectly fits your need. We assemble each unit in house with care and precision, that's why we confidently back all of our units with a 5 year warranty.


Pulse Transformers


Pulse Transformers

Our Pulse Transformers are used in numerous applications including triac triggering and  high voltage pulse applications up to 15 kV output. Specify your rise time, overshoot, droop, pulse width, repetition rate, and Electronic Craftsmen will design the optimal Pulse Transformer to meet your needs.




Specialty Transformers


Specialty Transformers

Highly engineered products developed to meet complex customer specifications. Materials and methods are uniquely selected to maximize performance and reduce costs. We work collaboratively with you to create optimal solutions to demanding requirements.



Switch-Mode Transformers


Switch-Mode Transformers

Electronic Craftsmen has been designing and building Switch Mode Power Supplies for over 20 years. Understanding SMPS fundamentals is critical in optimizing transformer design to achieve:


  • Smaller Size - Cooler Operation - Lower Losses
  • Appropriate topology
  • Optimal materials – frequency dependent