Ten-step voltage-level indicator

  
This ten-step adjustable analog level detector is capable Of sinking up to 40 milliam-peres at each output. The voltage range at the input pin should range from 0 to 2 volts. Circuits of this type are useful as liquid-level indicators, pressure indicators, and temperature indicators
Ten-step voltage-level indicator - schematic

They may also be used with a set of active filters to provide a visual indication of harmonic content of audio signals.




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