Please take a look at this simple circuit.
http://startingelectronics.org/begi...ow/tut2-transistor-timer/transistor-timer.png
http://startingelectronics.org/beginners/start-electronics-now/tut2-transistor-timer/
I don't understand how the switch is turned on to begin with. If electrons flow from negative to positive and if the switch is not connected from the start how do the electrons find their way to give the base of the transistor a positive voltage?
Does conventional current have a say in this?
Some one please explain how current flows in this circuit?
What happens when I close the switch? Why does the light turn off?
I noticed the capacitor has a temporary reverse voltage when I close the switch? The current changes polarity in the capacitor when its shorted and discharged? Causing -V to turn off the transistor switch? Is this reverse voltage a bad thing for the circuit? If its that.
Thats my guess, Im really confused. Please some one explain exactly how this circuit works with electron current flow.
http://startingelectronics.org/begi...ow/tut2-transistor-timer/transistor-timer.png
http://startingelectronics.org/beginners/start-electronics-now/tut2-transistor-timer/
I don't understand how the switch is turned on to begin with. If electrons flow from negative to positive and if the switch is not connected from the start how do the electrons find their way to give the base of the transistor a positive voltage?
Does conventional current have a say in this?
Some one please explain how current flows in this circuit?
What happens when I close the switch? Why does the light turn off?
I noticed the capacitor has a temporary reverse voltage when I close the switch? The current changes polarity in the capacitor when its shorted and discharged? Causing -V to turn off the transistor switch? Is this reverse voltage a bad thing for the circuit? If its that.
Thats my guess, Im really confused. Please some one explain exactly how this circuit works with electron current flow.