Digital voltage comparator

[vivaldez]

Hi all.

I need help in designing an over an under voltage alarm. I need to set an under and an over voltage with a pushbutton, using a display, and activate some kind of alarm when the set voltages are reached. I want a wide range of sensing voltage (1 to 70 vdc).

Any help please.

Victor

 

[csaba411]

1-70 in what resolution ?
1 volt should be easy !

 

[vivaldez]

Thanks for your reply

I would prefer 0.5 volts.

Victor

 

[Gorgon]

What sort of display do you want, numeric or LEDs?

How many alarms do you want of each type?

What sort of pushbutton system do you see, numeric keyboard or up/down/select type?

I think this is a microcontroller project, but may be wrong. Depends on your requirements.

TOK

 

[vivaldez]

LCD display.
An alarm for under and other for over. Led, relay or buzer.
Up/Down select type.

Victor