I am getting very frustrated with this little problem I have and I just can't seem to work it out. As on one of my previous post's I had the problem in shortning the time of a pulse I got from a digital reciever. I seem to have cleared that up with the 74121 IC,however now I have got the problem,I am using a transistor (2N3904) to drive the switching relay. The "shortned" pulse from the IC I fed into this transistor (base) I just cant seem to bais this transistor on with a voltage divider none of my calculations seem to work. I would also like to know where is the best place to connect the relay VCC to colector or Emitor to ground. Some specs VCC~12V;pulse~2V for 0.33 seconds. I would really apreciate it if I could be put out of my musery and if I could be pointed to a website where I can brush up on my transistor theory or calculations.