Because the circuit in Figure 1 does not monitor fan speed or current, it includes R 3 , C 1 , and D 1 to ensure that the fan starts turning during start-up. The time constant of R 3 and C 1 serves ...

Diodes Incorporated has announced the introduction of a pair of all-in-one single-phase 12V fan motor drivers for low to medium voltage brushless DC fan control in consumer, home ...