Hall effect switch

[ledor037]

I am trying to build a switching circuit using a hall effect switch that runs on 2.5V.

I currently use a reed switch which connects two wires when a wire is passed near the switch. Using the hall effect switch would prevent me from having to replace broken switch, or ones that have over time become magnetized and therefore "normally closed" instead of normally open. Can anyone help? Thanks

 

[IRstuff]

Help with what? Doing a websearch?

TTFN

FAQ731-376

 

[MacGyverS2000]

Getting a lot of these types lately...

Dan - Owner

http://www.Hi-TecDesigns.com

 

[Skogsgurra]

For someone that doesn't do Hall Effect work regularly, it is not at all obvious that there are devices that work from such a low voltage. I was surprised to find a complete unit at

http://www.melexis.com/Sensor_ICs_H...-_Low_Voltage__Very_High_Sensitivity_145.aspx

It works from 2.2 V.

Gunnar Englund

http://www.gke.org

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100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...

 

[bogeyman]

I doubt that the switch is becoming magnetized, its more likly that inrush currents are welding the switch closed.
Have a look at some reed switch makers websites for what you should avoid when using reed switches, one no no is capacitance across the switch or the switched load.