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Thank you for your suggestions. I was able to pick out a few buffers. I'll post links if you want to take a look at them.
I think both have their own switches. One just runs on batteries and the other on wall power. I can't test the power supply until I build the circuit.
The plan is to use a foot pedal to deliver a voltage of 5V to the air pump which is either connected to the wall or that already has batteries inside of it. The buffer amp is only at the center to illustrate my friend's suggestion. there is no special meaning to it. I already have the DAC and...
Well I tried ordering one from digikey.com but they have so many varieties, which one shoulod I choose? The tech support people reffered me to this model but I have my doubts: https://www.digikey.com/product-detail/en/LT1010CN8%23PBF/LT1010CN8%23PBF-ND/894323
*I am not connected to digikey.com...
Im trying to build a device that will deliver 0-5V to a matress air pump to a relay switch. One of my friends recommended that I need a buffer in the circuit but I don't know which one to pick. I'm at a complete loss since it is my first project involving electronics. Please help! I've attached...
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