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Re: PT 100 To ADC
yes,
you need amplifier to convert differential voltage to single ended signal. You can use instrumentation amplifier or simple differential amplifier.
You can use 82c55 PPI for this. I am using this for my all projects based on 8051. map 8255 on data memory.(memory mapped IO). Each port of 8255 contain data memory address. try searching on net for same or i'll give u basic design.
Hello all,
Always calculate least digit to measure i.e. if 30V = 30.0V or 30.00V? accordingly choose ADC. Higher resolution ADC will give more resolution but costs more. Current can be read with shunt resistor. scale resistor such that it should not load your circuit.
ideally Voltmeter should...
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