H-Bridge as a 4 channel relay?

Drive a 4-wire bipolar stepper motor or a pair of DC motors from your Arduino. [Product page]
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Joined:Wed Mar 09, 2016 8:44 pm
H-Bridge as a 4 channel relay?

Post by herebeaspoon » Wed Mar 09, 2016 8:52 pm

Is there any reason the H-Bridge couldn't be used as a 4 channel 'relay', to drive only one output at a time (with the added benefit of voltage level control)?

I would like to control 4 different valves, but only one of them at a time. They all have a common ground, so I thought this would be a good way to control the input voltage.


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Re: H-Bridge as a 4 channel relay?

Post by andrew » Tue Mar 15, 2016 8:38 am

Not by design, the output pairs are either +/- or -/+ or off.

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