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MFA 919D2 Series PWM Voltage / Speed Regulator Modules

MFA Brand: MFA
<P>These regulators from the MFA 919D2 range, have variable outputs providing smooth, progressive speed control from min to max, ideal for use in controlling motors and geared motors. They can also provide a dimmer facility for low voltage lighting circuits (6 to 15V only).</P><P>They employ Pulse-Width Modulation (PWM) circuitry, giving a constant voltage output. Speed control is achieved by varying the width of the output pulse. Maximum rated output is 3A constant, (5A peak). The modules operate from an input voltage of 6 to 15V DC from a non-digital power supply, i.e., a battery or a linear power supply.</P>
  • Allows infinitely variable RPM to be set on MFA drills, gearboxes and motors
  • Pulse width modulated output provides torque maintenance and proportional output control
  • Small, compact, robust construction for versatility and reliable service
  • Input voltage 6 to 15V DC
  • Output voltage 0 to 15V DC
  • Output current 3A continuous, 5A peak
  • Modulation frequency 1136 to 1250Hz
  • MFA 919D2 series
Note: supply and output cables must be trimmed to 21cm to meet current EMC regulations.
Order codeMftrs Part No.
37-1245919D2Free
37-1300918D100112/1Panel mount
*Question functionality currently disabled


15 May 2013 Question by: Rapid Customer | Product code: 37-1245
Q. Thanks for your previous response, so just to clarify.. I want to rotate a servo motor keeping the circuit as simple as possible. (hopefully only using this pwm and a battery) what else is needed to do this? I'm assuming this can be done without using an ic chip.
A. Hi Brendan. Thank you for your question. This will be fine as long as the motor is rated at 12V as this unit outputs between 4-12V.


14 May 2013 Question by: Rapid Customer | Product code: 37-1245
Q. Can this be used to control the rotation of a servo motor without using an IC?
A. Hi Brendan. Thank you for your question. This would only control the voltage so whilst it would control the rotation it can only be speeded up or slowed down by adjusting the small pot on the controller.