Author Topic: Tactile Switch Rating  (Read 1915 times)

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Offline rstor22Topic starter

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Tactile Switch Rating
« on: April 11, 2015, 05:01:48 pm »
Regarding the following circuit:

http://electronicdesign.com/power/almost-ideal-low-battery-cutoff-circuit-draws-only-12-mua

http://electronicdesign.com/site-files/electronicdesign.com/files/archive/electronicdesign.com/files/29/4423/figure_01.gif

If I have a 1-2AMP load at the switched output, would the following tactile switch for S1 and S2 be adequate?:

http://www.digikey.ca/product-search/en?KeyWords=b3f-1000&WT.z_header=search_go
Contact Rating @ Voltage   0.05A @ 24VDC

I am unsure if I need a higher rated switch (i.e. 2A) as to my understanding once S1 is depressed the relay would be activated....

Or do I need a switch rated for 2A for this circuit (based on the 1-2A draw at the switched output)?
« Last Edit: April 11, 2015, 05:03:51 pm by rstor22 »
 

Offline zapta

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Re: Tactile Switch Rating
« Reply #1 on: April 11, 2015, 05:28:35 pm »
For a short time the switch will get the full rush current of the load. You can try decouple the power to the electronic circuit with a diode and then have the on switch powering only the electronics without carrying the load's current.
 


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