Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
I have taken Analog Devices' standard application of their AD620 op amp to make the front end of an electrocardiograph (three electrodes are strapped to the subject).
In the attached schematic this is followed by a tunable 60 Hz notch filter with a dual op amp buffer stage and followed by a...
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