ESP8266 Community Forum

- Wed Oct 19, 2016 12:22 pm #56781 I really don't understant what you are trying to achieve with 2 linear regulators.

For the setup presented above you can use with great success a good quality Switching Regulator as this one or any other that suits your input/output voltage range, swing, power, etc.

ESP8266 MPDMv4 AC MAINS Dimmer Home: http://esp8266-projects.com/2016/04/mpdmv4-mains-dimmerswitch-html/
Available on Tindie: https://www.tindie.com/products/nEXT_EVO1/universal-ac-mains-dimmer-mpdmv41/

- Thu Oct 20, 2016 12:50 pm #56856

Are you sure you want to use a linear regulator, instead of a switching regulator?
In any case, adding a capacitor in parallel with the regulator's input should solve the issue.

You are absolutely correct. You'll have to forgive my ignorance–I come from the software side and still getting my head around some of the hardware.
I had thought switching regulators were only for larger power sources. Now I see all the switching regulator options, I've settled on the MCO16301.

Thanks for pointing me in the right direction.

- Thu Oct 20, 2016 11:19 pm #56881 I would not recommend using 9V batteries at all. They have poor energy density compared to AAs, are usually more expensive (per Wh) and are not designed for high load currents.

Also primary cells are a waste in my oppinion, so personally I would use either 3x AA NIMH (low self discharge) or a LiPo, both with a LDO with a low quiescent current.