How do I make a relay turn off at 11 volts?

[Fast Eddy]

any luck

The relay he has cuts out at 4.4v and turns on around 5.8v. The beer was good.

I don't have any easy way to draw the circuit, but we need two resistors (2k, 3k) to make a voltage divider, one of these brown-out reset chips, or something like it:

4.5 Volt brownout reset chip

and a transistor strong enough to drive 250ma to hold the relay on.

Or there's this, for $25: http://www.safetycentral.com/batprot.html

 

[beaufort-fj60]

The relay he has cuts out at 4.4v and turns on around 5.8v. The beer was good.

I don't have any easy way to draw the circuit, but we need two resistors to make a voltage divider, one of these brown-out reset chips, or something like it:

Catalog

and a transistor strong enough to drive .250ma to hold the relay on.

Or there's this, for $25: http://www.safetycentral.com/batprot.html

the zener diode is kinda like a brown out reset chip.


lol.. yeah 25 bucks, that's the deal. How long did it take to find that. Nice find by the way.