Digital Oil-Pressure Gauge

  
This gauge uses a sensor in conjunction with R1 to develop a dc voltage proportional to oil pressure. IC1 and IC
Digital Oil-Pressure Gauge - schematic

2 form a two-digit DVM. Q1 and Q2 are display selectors for the multiplexed display. IC1 provides the necessary +5 V to the circuitry. Calibration is via Rll and zero adjust via R17.




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