GD-973A SCR MOTOR SPEED CONTROL The Heathkit GD-973A SCR Motor Speed Control enables the user to vary the speed of universal type motors with virtually no torque loss. This makes it ideal for use with electric hand power tools and in hobby applications where a slow motor speed often is desirable. SPECIFICATIONS Load Limitation . . . . . . Any universal motor with a nameplate rating of 15 amperes or less Front Panel Controls . . . . Control-Off-Full Line switch Power Requirements . . . . . 105 – 125 or 210 – 250 VAC. 50/60 Hz Idle Power Consumption . . . 3 watts Dimensions . . . . . . . . . 3-1/4” wide, 6” long, 3-1/2” high Net Weight . . . . . . . . . 1-3/4 lbs NOTE: . . . . . . . . . . . This SCR Speed Control kit can be used only with universal (brush-type, AC/DC) motors.