| 摘要 |
FIELD: electric and radio measurement technology. ^ SUBSTANCE: device allows estimating presence and degree of harmonic distortions in amplifying sections. Estimation of harmonic distortions is based upon measurement of value showing difference of duration of positive and negative half waves of signal after non-linear transformation under condition that the initial process has to harmonic process with permanent parameters. Harmonic distortions meter has sinusoidal signal generator, comparator, two units for measuring time intervals and inverter. Input of inverter is connected with output of comparator which has signal input to be test input of digital meter. Reference voltage input of comparator is connected with common bus. Data inputs of first and second units for measuring time intervals are connected with output of comparator and output of inverter correspondingly. Admission inputs of units for measuring time intervals are integrated to compose gating input of digital meter. Output of units for measuring time intervals have to be data outputs of digital meter. ^ EFFECT: simplified design. ^ 2 dwg |
