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No output with MCP1700-3302E (lemmy.dbzer0.com)
submitted 1 year ago* (last edited 1 year ago) by Froghut@lemmy.dbzer0.com to c/askelectronics@discuss.tchncs.de
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I'm trying to build a esp8266 weather station and got some MCP1700-3302E to power the esp8266 from a lipo. But when I connect the lipo to the MCP1700 (looking at it flat spot at the front, ground left, Vin in the middle and Vout on the right) I get no output at Vout. I googled and could not find anything. I tested 5 different ones and it's the same for all of them. Could I just have a batch of broken ones? Edit: attached a picture of my very simple test setup Edit 2: I just connected three lipo directly to Vin, that seems to work without any problems (at least for a few days now)

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[-] joulethief@compuverse.uk 1 points 1 year ago

Huh, that's weird. Double checking the part markings would've been my next suggestion, but the picture shows they're correct. Maybe try a 1kOhm load resistor across Vout and GND, though in theory you should be able to see the output voltage without it.

[-] Froghut@lemmy.dbzer0.com 1 points 1 year ago

I tried with the resistor, same thing, 0V. I made two images showing the measurements

this post was submitted on 24 Sep 2023
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