Frequency Generating Transducer:

Frequency Generating Transducer – Unlike variable parameter analog transducers, frequency and pulse generating transducers measure physical variables in terms of a pulse repetition rate.

Since frequency is an analog quantity, these can be treated as either analog or digital devices. Therefore, any phenomenon to be measured is converted into a corresponding rate of pulse generation which undergoes counting process and is made digital in nature.

These transducers produce a simple series of voltage or current pulses or cycles in proportion to the change in the physical parameter being measured. The series of pulses can be counted over a certain precisely determined period of time and the input magnitude can be known with considerable accuracy.

Examples of such devices are pulse generating pick ups operating on the variable reluctance principle, photo-tubes, etc.