FIELD: instrumentation.
SUBSTANCE: every identical differentiation unit resistor in feed back circuit is connected in between amplifier output and point connection of resistor and capacitor connected to amplifier input. Note here that said resistor and capacitor switch places. Besides, extra link including resistor and capacitor connected in parallel is introduced into every differentiation unit. Said extra resistor and capacitor are connected in between inverting amplified output and input to make a feed back circuit. Said resistor is connected by its output to amplifier input to make the unit input by its input. Link capacitor gets retuned simultaneously with the other capacitors of differentiation unit. Configuration structure variation and differentiation unit parameter optimisation allows the decrease in factor and frequency range with respect to amplification of noises.
EFFECT: higher noise immunity of measurements.
1 dwg
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