edge triggering

I am trying to trigger a 555 timer using a daylight detector. For daylight detector I planned using a comparator with a potentiometer and a photoresistor. I will be comparing the voltage difference and comparator would turn on or off depending on the amount of light photoresistor gets. The...

I have watched recently this video: At the end of it he describe a way to make edge detector by using capacitor and resistor. The thing is i don't see it being discharged in any way. Would't it make it impossible to charge again and in consequence make current flow through the resistor and make...

Hi everyone, I have a confusion regarding edge-triggered flipflops. In the diagram attached below, I'm confused what to take the value of J and K as input since it is changing at the very edge of the area 3. If we are considering negative-edge triggering, will we take J and K as 0 or as 1? If...