Which Lab Power Supply?
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@HenryWhite Looks good. I did something similar (not completely finished) but went too cheap ;-(
A huge (0.3 V) noise/ripple on the output.... Are you able to measure the ripple with the converter you used? And what kind of transformer did you use?@AWI said:
@HenryWhite Looks good. I did something similar (not completely finished) but went too cheap ;-(
Looks good too!
A huge (0.3 V) noise/ripple on the output.... Are you able to measure the ripple with the converter you used? And what kind of transformer did you use?
I can't measure it, because I don't have an oscilloscope (yet) :smile:
For powering the module, I used an old 12V laptop power supply. -
Any thoughts on a case (ebay/ali) for homemade PSUs?
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@HenryWhite Looks good. I did something similar (not completely finished) but went too cheap ;-(
A huge (0.3 V) noise/ripple on the output.... Are you able to measure the ripple with the converter you used? And what kind of transformer did you use?@AWI , a did a similar thing, but never got the volt/amper meter work properly on the 'negative side'. Mine looks very similar (to not say identical) to yours... Would you mind to share how did you connected the V-A meters?
Home Assistant / Vera Plus UI7
ESP8266 GW + mySensors 2.3.2
Alexa / Google Home -
@AWI , a did a similar thing, but never got the volt/amper meter work properly on the 'negative side'. Mine looks very similar (to not say identical) to yours... Would you mind to share how did you connected the V-A meters?
@rvendrame As far as I remember there are two similar power positive voltage (isolated) power supplies with the meter in the positive line. Then connect the positive line of no 1 to the negative line of no 2.
