555 tachometer circuit diagram

Posted on Mar 28, 2007    9704

As shown from the switch contacts, proportional to the speed pulse signal Vi, after the differential is added to IC (1/2 556) trigger side to make the single stabilizing circui

555 tachometer circuit diagram
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t generates a pulse of fixed width, td 1.1R2C2, different speed has its proportional number of pulses, one-shot pulse output by the constant current source VT1 and C3 integral to obtain a voltage proportional to the rotational speed, it can speed digital readout on the meter. This circuit is also referred to as the rate of voltage conversion circuit.

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