Cloning Printed Circuit Board Convertor

When Cloning printed circuit board for the two channels signals convertor, from dual polarity input voltage to the dual polarity output current, and there is a very specific requirement, each channel must have a piece of double color LEDs which can flash according to the input signals, and frequently take red light or green light to indicate the signals as positive or negative separately.

and in this case there will be two problems, first is LED driver will need the rising pressure, as a result of that there will be no dead block where is close to the zero; secondly the engineer can foretell when the signal is negative, LED will probably present the negative result, and vise visa. and this scenario can be view as the backlash in view of the mechanical force. and normally it is not necessary to take the variable voltage to drive the LED, but apply PWM driver as Linear’s LTC6992, which still need to generate a deviation and still unable to tackle the backlash issue even through reverse engineering pcb technology.

besides, engineer will need two pieces of PWM driver for each channel which can probably increase the extra circuit and makes the LED turns from red to green; and a reasonable method will find a proper low level microcontroller.

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