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The MFA 919D2 voltage / speed regulator has a variable output providing smooth, progressive speed control from min to max, ideal for use in controlling motors and geared motors. It can also provide a dimmer facility for low voltage lighting circuits (6 to 15V only).
It employs 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 module operates from an input voltage of 6 to 15V DC from a non-digital power supply, i.e., a battery or a linear power supply.