I use 3 LED drivers to drive 3 strings of LEDs. LED driver current can be adjusted via an external resistor. I want to be able to set three levels of current which means that I need to switch among 3 resistors per LED driver.
I will use following resistors 10 ohm, 50 ohm and 100 ohm. Considering the value of resistors switching device should not add any additional resistance above 10 ohm.
Since I’ve got 3 drivers I need to switch among 9 resistors. I don’t want to use rotary switches. Are there multriplexers or SS switches that don’t add additional resistance ?
I will use following resistors 10 ohm, 50 ohm and 100 ohm. Considering the value of resistors switching device should not add any additional resistance above 10 ohm.
Since I’ve got 3 drivers I need to switch among 9 resistors. I don’t want to use rotary switches. Are there multriplexers or SS switches that don’t add additional resistance ?