Free Simple Circuit Diagram
To extend the measurement range of an available ADC(analog to digital conveter) we can use this autoranging. If it implemented on multiplexed input, this circuit will give best result. To adjust an ADC’s full-scale range we use a system autoranging that use LTC1257 because it is appropriate for system autoranging. During the conversion process, U2 and U3 receive the full […]
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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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If you are building or troubleshooting audio circuits, both audio signal injector and audio tracer is important tools. tracing audio signal means tapping a signal at certain point, and check if the signal is exist. Here is the schematic diagram of the signal injector/tracer circuit: Tracing an audio signal can be done using an audio amplifier, but using a handheld […]
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What is A pH Meter? A pH meter is actually a precise voltmeter that measures the generated voltage of a pH electrodes. The requirement of such meter is high input impedance and has the gain of voltage-pH conversion. The standard pH probe generate voltage about 59 mV per pH, so all we need is a pre-amplifier with high impedance input […]
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