Hello
I need a simple light switch that contains a light diode and a photo diode (or transister, I am not sure about the difference) and when the light disapears it has to shut off a motor.
I have found this, but it seems to do the opposite, turning something on when the light disapears.
http://www.circuitstoday.com/photo-relay-circuit
Can I somehow reverse this?
/Jacob
I need a simple light switch that contains a light diode and a photo diode (or transister, I am not sure about the difference) and when the light disapears it has to shut off a motor.
I have found this, but it seems to do the opposite, turning something on when the light disapears.
http://www.circuitstoday.com/photo-relay-circuit
Can I somehow reverse this?
/Jacob