Free Simple Circuit Diagram
A vibration meter circuit shown in the following schematic diagram uses LM3915 a the main active component. This vibration meter uses a piezoelectric transducer to pick up the vibration. The logarithmic characteristic of LM3915 make this meter circuit works for wide range measurement, suitable for measuring engine block vibration or other system where the dynamics is wide. Here is the […]
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This schematic diagram shows a water level sensor/detector/monitor circuit. An alarm is also featured in this circuit. Any fluid with a resistance under 900K between the maximum separation distance of the probes will trigger this circuit. A 4050B CMOS hex buffer is used on this circuit that is working at 5 volt supply. The 10M resistors connected between buffer input […]
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Introduction Humidity is the amount of water vapor in the air, expressed as a percentage of the maximum amount that the air could hold at the given temperature. To build a humidity sensor can be difficult because of their wide dynamic range and sensor’s drive requirement. But we can build the humidity sensor with reasonable accuracy within the chosen range […]
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