having problems with puting in ics on breadboard .even with holder seam not to work . only have two to work with so dont want to damage them. got them from rapid .any help much thanks simon.
input pin 1 and 2 to - supply. pin3 to 10k resistor .then to led then to - supply. pin 7 to - supply .pin 14 to +supply pin 3 is output.o o should =1 so the led sould be lit. havent pushed the ic right in used ic holders to put in breadboard if i put it flush to breadboard its hard to get it out.led not lighting useing st 4001be chip
I don't think the pins of the IC socket are touching the bus-bars within the breadboard. Put the chip directly into the breadboard. The chip will easily drive the LED at 9v. Use 470R current limiting resistor.
You are placing the IC (or socket) across a gutter in your breadboard, aren't you? The chips are not difficult to remove at all when a small tool can be inserted into the gutter and lifted.
I know its a silly question, but I've seen a plethora of mistakes like that.