hi, my teacher has set me this project which seems really simple but I'm not sure there isnt a trap.
He wants me to makea circuit which lights a diode when its working. so for example when you turn your car headlights on, this diode should come on,but if the bulb is blown, then the diode doesnt come on.
i had thought of putting the diode and bulb in series but there's not enough current and now i'm thinking of using a relay to light the led circuit but im worried that current going through the control circuit will be too much.
Does anyone have a simple solution to this
help
He wants me to makea circuit which lights a diode when its working. so for example when you turn your car headlights on, this diode should come on,but if the bulb is blown, then the diode doesnt come on.
i had thought of putting the diode and bulb in series but there's not enough current and now i'm thinking of using a relay to light the led circuit but im worried that current going through the control circuit will be too much.
Does anyone have a simple solution to this
help