Solution for low voltage detector

[shaz]

heya frdnz,
i want a circuit which gives me +5 volts ouput if input voltage is +8 volts and 0 (zero) volts ouput if input voltage is even slightly lower than +8 volts (maybe at 7.8 volts).

waiting for eager reply.....Thanx

 

[kwkam]

low voltage detector

You can do it with a typical opamp as voltage comparator.

 

[sunking]

low voltage detector

use a rail to rail opa as comparator