Hi all,
I was doing my second circuit, first one with a transistor !![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
But I didn't get the result I wanted, instead I got a surprise I don't understand.
My idea was to put a delay on the LED, so it will not turn on immediately after I plug the battery, instead I got the opposite, it takes a while to turn off, I can unplug the battery and the light diminishes slowly ( 1 minute approx. )
I don't understand how the led can emit light if the circuit is not closed !?!?
Is it because the capacitor -> transistor -> led -> capacitor is a closed circuit even when the transistor is not receiving nothing on the emitter ?, it means there is a flow from the base to the collector ??
Thanks
I was doing my second circuit, first one with a transistor !
But I didn't get the result I wanted, instead I got a surprise I don't understand.
![11142-first circuit.png](https://static.electro-tech-online.com/imgcache/11142-first circuit.png)
My idea was to put a delay on the LED, so it will not turn on immediately after I plug the battery, instead I got the opposite, it takes a while to turn off, I can unplug the battery and the light diminishes slowly ( 1 minute approx. )
I don't understand how the led can emit light if the circuit is not closed !?!?
Is it because the capacitor -> transistor -> led -> capacitor is a closed circuit even when the transistor is not receiving nothing on the emitter ?, it means there is a flow from the base to the collector ??
Thanks