http://www.kpsec.freeuk.com/trancirc.htm
at the bottom you have a simple NOT gate using a Transistor, the trigger which is fed to base goes through a 10k resistor is this used to limit the current from the short? I've built it and it works but i'm not totally sure how it works but here's how i /think/ it works.
The trigger, goes to base, the + (positive) to the collector and the - (negative) to the emitter, not for any other reason other than to supply the (let's for argument sake an LED) as the Base voltage saturates the transistor, the current flows from Collector to Emitter (Short???).. but to me this would mean a short, so does that mean the 10k resistor or the 1k deal with the short? or am i missing something?... what happens for the duration of the short which resistor does what?
(sorry if hotlinks are not allowed I've not had time to read the rules)
http://www.kpsec.freeuk.com/images/trinvert.gif
at the bottom you have a simple NOT gate using a Transistor, the trigger which is fed to base goes through a 10k resistor is this used to limit the current from the short? I've built it and it works but i'm not totally sure how it works but here's how i /think/ it works.
The trigger, goes to base, the + (positive) to the collector and the - (negative) to the emitter, not for any other reason other than to supply the (let's for argument sake an LED) as the Base voltage saturates the transistor, the current flows from Collector to Emitter (Short???).. but to me this would mean a short, so does that mean the 10k resistor or the 1k deal with the short? or am i missing something?... what happens for the duration of the short which resistor does what?
(sorry if hotlinks are not allowed I've not had time to read the rules)
http://www.kpsec.freeuk.com/images/trinvert.gif