[i=s]This post was last edited by paulhyde on 2014-9-15 09:28[/i] A resistor is connected in series to the infrared transmitting tube and then to the power supply. The receiving tube is a phototransis...
I want to use an op amp to make a voltage attenuation circuit to measure 3~48V DC signals. Attached is a preliminary circuit diagram, but the power frequency interference problem cannot be solved duri...
LPC54102 uses IRC and SPI communication without problems; but when using 32.768KHz and PLL to 12MHz, the program runs for a while and an exception error occurs....