Mr Carlson's Lab
patreon
Boost Converter Supply - Challenge Yourself - Build This Circuit. Patron Only Merch Update!
🕑 Added 2019-10-02 07:41:05 +0000 UTCImprove your Carlson Low Voltage Leakage Tester "Sensitivity" with this circuit. Merch news, and more circuits to come!
If you're enjoying these videos, let me know by tapping the heart symbol below. Thanks!
Here is a link to the list of video's here on Patreon, NEW LIST of Videos: https://www.patreon.com/posts/8239565
This is video #79, include this when requesting attachments.
NEW: Below, as an attachment, Ralf, "Reb Elba" put together a BOM or "Bill Of Materials." Thanks Ralf!
To expand this post, click the large black video title.
To see all the comments, click the "load more comments" tab at the top left of the comments section multiple times until the number at the right top stops counting.
Comments
James George
This is an excellent circuit to hone your surface mount soldering skills. I learned a great deal from this, soldering in 0402 and 0603 parts, the latter of which will fit in 0402 locations.
Darryl Godfrey
Hi Ray: I just saw your question: pin 3 isn't used in this specific circuit. It's used to connect an optional resistor to reduce the gain of one of the comparators. The datasheet suggests that this helps stability. I haven't tried it, but it's probably worth doing once the basic circuit is working. One thing that I found quite important was to connect the 100uF input capacitor right across pins 7 (GND) and 12 (VCC). I also as a matter of habit have a 1uF ceramic across the rails to help bypass noise.
Ray O.
I have been working to set up this circuit in LT Spice, quite successfully, mostly..., and everything appears to be fine with the schematic, except I can't find Pin 3, feedback, in the schematic? Is there an error in the published schematic, or is the feedback pin not in actual use in this circuit?
