METHOD FOR DIFFERENTIATION OF ANALOG VOLTAGE Russian patent published in 2006 - IPC G06G7/18 

FIELD: automatics, computer engineering, in particular, electro-measuring equipment.

SUBSTANCE: in accordance to method, difference is determined between quantization steps, which are generated in form of wide-impulse signals, by means of wide-impulse modulator 1 (dwg.1), while difference is determined in form of value, proportional to difference of time intervals, determined by adjacent quantization steps of analog voltage. Difference separation circuit 2 (dwg.1) generates an impulse (dwg.2, c) duration of which equals difference of impulse durations. Transformer of impulse length to voltage 3 (dwg.1) generates output value, proportional to difference of impulse durations, and may be realized on basis of low frequencies filter. Frequency of impulses at input of impulse length to voltage transformer 3 is constant and determined by frequency of triangular voltage of wide-impulse modulator 1.

EFFECT: increased precision of analog voltage differentiation.

4 dwg