SU402822A1 - DIGITAL PHASE? LETER - Google Patents

Description

one

The invention relates to the field of phase-measuring technology.

Known digital phase meters containing formers, trigger, key circuits, delay lines, quantizing generator, divider, summing counter, keys, adder-indicator, and coincidence circuits are structurally complex.

To simplify the construction, the proposed phase meter with an additional trigger, an OR circuit, two additional key circuits and an anti-coincidence circuit, the inputs of which are connected to the clock generator outputs and parallel to the input of the additional circuit keys and simultaneously connected to the output of the second key circuit, while the outputs of additional key circuits are connected to the inputs of the OR circuit, the output of which is connected to the input of the summing -meter, and the output of the additional trigger controlled by one of the drivers, is connected to additional key strokes and with an input circuit of the adder-indicator.

The drawing shows a block diagram of the described phase meter comprising forming devices 1, 2, controlled trigger 3, delay line 4, triggers 5, 6, key circuits 7-10, OR 11 circuit, summing counter 12, counter 13, key group 14, the matching scheme 15, the anti-matching scheme 16,

the adder indicator 17, the frequency divider 18 and the quantizing generator 19. The phase meter operates as follows. Forming devices 1 and 2 produce positive zero transitions of the stresses under study. Under the influence of impulses of forming devices, trigger 3 generates rectangular impulses arriving at key circuit 7, to the second input of which impulses of quantizing oscillator 19 are output. pass to the input of the key circuit 8, controlled by the trigger 5. and to the input of the anti-coincidence circuit 16. At the output of the anti-coincidence circuit, pulses appear only when they are not at the output of circuit 9. From the output of the anti-coincidence circuit, 16 pulses arrive to the key circuit 10 controlled by the trigger 5. Before the measurements are started, the trigger 5 is set to such a position that the key circuit 8 is opened and the adder 17 is switched on for addition.

The impulse of the end of the period (it is also the impulse of the beginning of the next period) from the output of driver 1 through the group of keys 14 transfers the contents of summing counter 12 to the sum of indicator-indicator 17, which is included in the mode

addin Through delay line 4