#771 Voltage Divider Project - Part 3 Sponsored By PCBWay

I design and build a precision voltage divider which does 1000:1, 100:1 or 10:1 ratios (or any other you want if you work out the resistor values), this is sponsored by PCBway.com who supplied the PCB's for me at no charge.

PCBway: http://defs.link/?u=19abc3

0:00 - Intro. 0:50 - Circuit discussion. 3:50 - Op-Amp using Zener diodes to split a single supply. 7:41 - Future revision ideas. 9:01 - Stencil. 9:35 - Hand soldering the reverse side. 14:47 - Optional capacitors. 15:25 - Testing the negative supply rail functionality. 18:55 - Stenciling the top side. 20:57 - installing top side parts. 24:50 - Soldering with the hot plate. 25:22 - Watching solder melt. 27:55 - Installing trimmers. 29:48 - Testing the board. 30:00 - PDVS2mini: http://defs.link/?u=c15d9d 30:55 - Initial testing and adjustment. 33:17 - Adjusting the NULL offset. 35:24 - Testing the output (despite the offset issue) 36:40 - Oops. 38:29 - Retesting the NULL offset. 47:13 - Changing the NULL trimmer setup. 51:50 - Testing the effect of the power supply voltage. 53:05 - WOOHOO ! Not bad, not bad at all... 54:45 - Patreon supporters: https://defs.link/?u=fcb3a1 55:01 - Outtakes.

Part 1: https://youtu.be/94bJs_73Ixc Part 2: https://youtu.be/6C3NryQRp7E Part 3: https://youtu.be/gUikShvjyis Part 4: soon...

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