[sdiy] odd behavior of transistors

[mark verbos]

In my current project I have used a 2N3904 at the trigger input. I 
noticed today that this transistor was responding backwards to the 
triggers! That is it was opening with a ground and closing with a gate.

I pulled the part out and put another in. Problem solved. Does this happen?

Has anyone in Germany noticed a high margin of bad parts in orders form 
Reichelt? I have found at least one bad chip on each channel of my new 
sequencer. That's 5 chips that didn't work from the onset. When they 
were replaced by chips from another source, everything was fine. They 
have been 4067, 4514 so far, plus the 2N3904. Am I the one who's crazy? 
I guess that's why they're cheap.

mark