Digital Oil Pressure Gauge (CB25336E)

This circuit was found in the July 1990 Radio Electronics magazine. It is based on the 3-digit indicator ICs CA3161 and CA3162.

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Instrumentation High Impedance Stage (CB13413E)
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15-Channel Remote Control Receiver (CB13998E)
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3 to 20 MHz XTAL Oscillator (CB13870E)
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