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Digital Relay Question

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charlie363

New Member
Hi to all,
I have a national instruments dacq usb module which allows me to output a digital signal of between 0 and 5V. Here are the details:

Analog Output
Absolute accuracy (no load) ............... 7 mV typical, 36.4 mV maximum
at full scale
Number of channels............................ 2
Type of DAC ........................................ Successive approximation
DAC resolution.................................... 12 bits
Maximum update rate ........................ 150 Hz, software-timed
Output range ....................................... 0 to +5 V
Output impedance............................... 50 
Output current drive............................ 5 mA
Power-on state.................................... 0 V
Slew rate............................................. 1 V/μs
Short-circuit current............................ 50 mA

My question is, is it possible to use this to trigger a relay? I would like this relay to let 220V through. But my understanding is that with only 5mA coming out, it won't be possible to use a solid state relay with a bobin! Is this correct? Can anyone point me to a relay which will take this low amperage?

As an application, this would be a way of turning a standard 220v lightbulb on or off through my PC. Thanks for your help,
Charlie
 

MikeMl

Well-Known Member
Most Helpful Member
**broken link removed** will turn-on with only 5V @5mA applied to the input terminals...
 
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