Power supply for esp 12f

Thread Starter

idrbur

Joined Jan 11, 2018
22
I am thinking about using a 3.85 volt 2.5 amp Li ion battery to power my esp 12f and I have added a 1n4007 I'm series with battery to get a voltage drop and get a voltage of 3.45 across esp.
I was wondering if it would be alright for me to use this supply for my project or. Should a get a 3.3v regulator ic.
I am pretty new to electronics and any kind of help would be appreciated.
 

DickCappels

Joined Aug 21, 2008
7,985
If you use a 3.3 volt power supply you won't have to worry about the state of charge of a battery and can then concentrate of getting the ESP12f to do what you want.
 

Tonyr1084

Joined Sep 24, 2015
6,459
A fully charged Li-ion cell can be as much as 4.2V. Using a diode to drop a half a volt isn't the way to go. No matter what you're doing you're dropping (wasting) 0.6V as heat. A regulator will likewise do pretty much the same but it will also keep a constant voltage depending on the battery voltage. A buck/boost converter may be the way to go. Less wasted energy. But even then there's still a sacrifice. Efficiency goes down depending on the converter.
 

DickCappels

Joined Aug 21, 2008
7,985
I don't think the main issue here is efficiency, even thought a battery is involved. I think it has more to do with what idrbur can do to get started with what is available. Just the way it looks to me.
 

Thread Starter

idrbur

Joined Jan 11, 2018
22
I don't think the main issue here is efficiency, even thought a battery is involved. I think it has more to do with what idrbur can do to get started with what is available. Just the way it looks to me.
Its just as you say.... I just wanted to know if this method can work for me or not.... But the asm1117 I ordered has arrived so now I'm just gonna use that.... Anyway thanks for the help
 
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