Questions:
The Pin at rs232 25pin the pin9 and pin10, positif voltage and negatif voltage. The out put of the voltage is in what range? Do it able to supply to other circuit(small circuit about 5v needed)?James Newton replies: See Parasitic power from RS232+
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Ashley Roll has put together a really nice little unit here. Leave off the MAX232 and keep these handy for the few times you need true RS232! |
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