[Ronja] Ronja Drive

[Karel Kulhavy]

---- pedro.lopezestepa at epfl.ch schrieb:
> Hello,
> 
> I decided to use the way in which you drive the LED in your  
> transmission circuit.
> But I was wondering if all the NOT gates are needed in my case where  
> the input is a clear square signal.(It would be also very nice if you  
> could explain me the reason of having 15 NOTs)

Are you studing at Ecole Polytechnique Federale de Lausanne?
As seen in the HC04 datasheet, the output current is rather limited, that's why the
gates are tied in parallel to get a harder source of square wave voltage for the LED.
The LED also has a capacitance and needs to be charged quickly.

Karel