LCR Electronics

Triac and Phase Cut Motor Controls

Triac controls are used in a wide variety of applications such as pumps, vacuum cleaners, blenders, mixers, fans, lamp dimmers, and other small tools and appliances where variable uni-directional speed control is desired.

They are ideal for universal motors, DC brush motors, AC induction (PSC) motors, shaded pole motors and resistive loads. LCR has developed easily-customized demonstration boards to reduce OEM project start-up time. Contact an LCR representative for information on how to obtain a sample.

All of our triac controls feature:

  • Single, multiple or ranged voltage (85 to 265 VAC)
  • Variable motor speed
  • Operating temperature range of -40 to 85 ºC and beyond
  • RoHS compliance
  • Broad range of load current options
  • Feedback control options
  • Custom user interfaces
  • Current monitor options
  • CE compliant including EMI
  • Customized designs
  • Quick time to market


LCR offers the following three standard boards that provide various features depending on your design needs. These products are available off the shelf, or are customizable -- consult for details on how we can help meet your specialized needs with these products or custom design filters.


EC101 General Purpose

EC101 General Purpose Triac Control Board

Our lowest cost basic option, the EC101 is available in various configurations, includes a potentiometer driven or fixed (factory set) adjustment and is available as sealed potted modules.

Data Sheet (PDF)
EC102 Smart

EC102 Smart Digital Triac Control Board

The EC102 is an extremely versatile, digitally-controlled board used in projects where speed regulation and user interfaces with soft keys and LED indicators are important, and interface to other equipment is not required. Over-current protection may be added as an option.

Data Sheet (PDF)

EC103 Isolated Smart Digital Triac Control Board

The EC103 addresses the interfacing equipment limitation of the EC102 with an isolation voltage. The board is suitable for use with 0-5V, 0-10V, and 0-20mA command systems.

Data Sheet (PDF)

EC1032 Low Cost Multi-Function Control

EC1032 is a simple and flexible way to incorporate a new
feature into your product. Using the well-known and
time-proven phase cut technique, the EC1032 can be
used on any single phase power input up to and including
240VAC at 12A.

Data Sheet (PDF)
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