![]() The output of this will be taken from the collector, and will be inverted from the input of the 6N137.Ĥ) Get a 4093 CMOS Schmitt-input quad NAND gate, and use 15V for it's Vdd, and ground for Vss. Connect it's emitter to ground, base to pin 6 of the 6N137 using a 1K resistor, and collector to 15V using a 1K resistor. It will also prevent exceeding the specified max limit of 7v on the output phototransistor.ģ) Get an NPN transistor, such as a 2n2222 or 2n3904. This will limit the current through the 6N137's phototransistor to 23mA, less than 1/2 it's max rating. ![]() 1) Disconnect and remove the pull-up resistor from pin 6 from 15VĢ) Connect a 220 Ohm resistor from pin 6 of the 6N137 to 5V. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. Archives
February 2023
Categories |