low voltage relays?

I'm looking for a low voltage relay? What I need is something that will trigger at approx. 1v or even less if possible (just to be safe), but can output as much as 12v or more...

so it would be something like this:

trigger: 1v

Thanks!!

huh? what would transistors do? please elaborate.. this site is terrible at the traffic it gets - such little traffic so sporadically...

if you guys could elaborate that would be pimp..  :)

thanks!

here is how to find the values you need.

1 triggger voltage (1VDC)

2 take trigger voltage -.7 (.3)

3 input to trasistor will have a resitor on it = to .3 / 3mA (100 ohms) find a even R value that will keep you current low.

4 relay draw or other device must be less then 700mA and less then 30VDC (a bosh type is less then 500mA)

5 place a 1n914 diode with the cathode to the + voltage. This is to protect the trasistor

example 2

trig voltage (5VDC)

5VDC-.7=4.3VDC

4.3VDC / 4mA = 1075 ohms round to 1K ohms (current will be 4.3mA)

or

4.3VDC / 3mA = 1433.3 ohms rouns to 1.4k ohms (current will be 3mA)

or

trigger voltage =12VDC

12VDC-.7=11.3

11.3VDC / 4mA = 2800 ohms round to 2.2k get you 5.1mA

nothing changes as for the relay side.

the values for the resistor I just pick because they are common. you can chose other too.

it is not a bad idea to put the diode on the input side of the trasitor to protect the device driving the circuit. here is where the current above realy comes into play and should stay well below 75mA and will need more then 1VDC to run the circuit. and the (-.7) will now be (-1.7)