Direct Current Tachogenerators for Accurate DC Voltage Output are widely used in applications for feedback and display purposes. Tachometric Controls offers Direct Current Tachogenerators for Accurate DC Voltage Output. Tachometric Controls is an ISO 9001: 2000 certified company that manufactures Brushless DC Motors [BLDC Motors], AC Induction Motors [& Geared Motors]: up to 5 HP, DC FHP PMDC Motors [& Geared Motors]: up to 1HP, etc. Direct Current Tachogenerators for Accurate DC Voltage Output is a speed transducer, which develops DC voltage proportional to speed of the motor connected to it. Permanent Magnetic field Eliminates the need of external excitation and offers extremely reliable and stable outputs. The accuracy of the tachogenerator decides the maximum accuracy of speed of the controlled machine.