I have a 3 pin Bi-LED, two anodes and one cathode. I am using it with two transistors, each transistor controls a anode. The only way I can sucesfully use this Bi-LED is if I attach 2 signal diodes to the cathode (gnd), thus creating two seperate cathodes, connecting them to the collector of the transistor. How will this effect the formula in choosing a resistor on the Bi-LED's anodes? I would assume that a smaller resistance would be chosen. It should be noted that one of the transistors are also powering a
150mA relay. 150R x 2 Bi-LED V+ ---------/\/\/\/\/---------==|\___ Diode1 V+ ---------/\/\/\/\/---------==|/ \---|\___TO COLLECTOR OF TRAN 1 \ \ \ | |/ | | Diode2 |--|\___TO COLLECTOR OF TRAN 2 |/ Heres a readable schematic:- posted
17 years ago