EDN Magazine — 11.10.94 Digital tachometer avoids analog vices(figure)

FIGURE 1

Fig 1— The digital tachometer in (a) cleverly adjusts its sampling rate to match varying rates of input pulses. The sampling rate varies as the actuator being controlled approaches its target (Table 1). The circuit in (b) compares the tachometer's output with the actuator's desired speed.

back