Abstract
In this paper is presented a numeric frequency meter that is realized with faze fittings circuit (?E 565). The realized frequency meter is destined to control the network frequency around the frequency of 50Hz. To display the value of the frequency two display devices with a common cathode VQE23F are used. Each display device contains two seven segments display cells. Frequency’s from 40 to 60 Hz can be measured which can then be displayed with two decimals.
Cuvinte cheie
oscillator
PLC