https://stream.echo6.co/videos/watch/d3de943e-fd92-426c-803b-6b5ebe1530b7 Part 1: http://www.youtube.com/watch?v=pXMhpEi_wPU Dave gets his precision 1A current source circuit working on a breadboard. LTC6655 http://cds.linear.com/docs/en/datasheet/6655fc.pdf VPR221Z Precision 4-terminal Z-Foil resistor from Vishay: http://www.vishaypg.com/docs/63116/vpr221z.pdf LTC6655 Voltage Reference: http://cds.linear.com/docs/en/datasheet/6655fd.pdf OPA376: http://www.ti.com/lit/ds/sbos406f/sbos406f.pdf EEVblog Main Web Site: http://www.eevblog.com EEVblog Amazon Store: http://astore.amazon.com/eevblogstore-20 Donations: http://www.eevblog.com/donations/ Projects: http://www.eevblog.com/projects/ Electronics Info Wiki: http://www.eevblog.com/wiki/ Wed, 10 Jun 2026 08:38:50 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://stream.echo6.co https://stream.echo6.co/client/assets/images/icons/icon-512x512.png https://stream.echo6.co/videos/watch/d3de943e-fd92-426c-803b-6b5ebe1530b7 All rights reserved, unless otherwise specified in the terms specified at https://stream.echo6.co/about and potential licenses granted by each content's rightholder.