Leading-Edge Materials and Engineering Know-How...                   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.

Transformers That Perform

State-of-the-art materials, expert design capability and world-class manufacturing

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Product Categories

Current Sense TransformerManufactured by E Craftsmen
Current Sense Transformer

Unique current transformer designs for applications including instrument control & monitoring, switch mode power supply control and feedback for equipment protection.

Power Transformers Manufactured by E Craftsmen
Power Transformers

In production runs from five pieces to 100,000 pieces we design and manufacture power transformers for virtually any application.

Pulse Transformers manufactured by E Craftsmen
Pulse Transformers

Our Pulse Transformers are used in numerous applications including triac triggering and high voltage pulse applications up to 15 kV output.

347V & 480V Transformers manufactured by E Craftsmen
347V, 480V & 600V Step-Down Transformers

Popular "Slim Line" family of stock parts for LED lighting with their unique low profile height and width or custom-designed models developed to meet your unique power requirements.

Specialty Transformers manufactured by E Craftsmen
Specialty Transformers

Highly engineered products that meet complex customer specifications. Materials and methods are uniquely selected to maximize performance and reduce costs.

3 Phase Transformers manufactured by E Craftsmen
3 Phase Transformers

Our three-phase custom transformer designs are used in a multitude of applications and include unique stacking configurations, custom mounting, brackets & terminals and integral lifting hardware.

Switch-Mode Transformers Manufactured by E Craftsmen
Switch-Mode Transformers

E Craftsmen has been designing and building Switch Mode Power Supplies for over 20 years.

Aviation and 400Hz Transformers Manufactured by E Craftsmen
Aviation and 400Hz Transformers

We design transformers for a huge variety of highly specialized conditions.

Transformer Capabilities at Electronic Craftsmen

  • Power: From mW to 50kVA @ 60Hz or up to 200kVA @ 20kHz (typical)
  • Working Voltage up to 15kV (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 coatings available
  • Corrosion resistant coatings & platings 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 (safety) or MIL PRF 27 (aerospace / military) requirements upon request
  • MIL PRF 27 Grade 5 & 6 encapsulation available