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powered ESP8266 with 5v and tree diode ==> 3,6V

PostPosted: Thu Sep 24, 2015 8:29 am
by picpic020960
Bonjour ,

i have read in this forum that it's possible to powered ESP8266 with 5v battery ( USB Charger) and tree diodes (LED ?).

5v - 3* 0.6 = 3,2V.

How to do that ?

with 'search function' not found.

Thanks for help , link or other info.

Re: powered ESP8266 with 5v and tree diode ==> 3,6V

PostPosted: Thu Sep 24, 2015 8:39 am
by kriegste
This would be very crude. The forward voltage always depends a bit on the current. With an ESP8266 you can have 70 mA, but you can also have 0.9 mA. The resulting voltage changes can even toast the chip.

Please use a proper voltage regulator.

Re: powered ESP8266 with 5v and tree diode ==> 3,6V

PostPosted: Thu Sep 24, 2015 11:03 am
by eriksl
That's what they're for ;)

A buck converter is even better.

Re: powered ESP8266 with 5v and tree diode ==> 3,6V

PostPosted: Thu Sep 24, 2015 11:19 am
by AJB2K3
picpic020960 wrote:Bonjour ,

i have read in this forum that it's possible to powered ESP8266 with 5v battery ( USB Charger) and tree diodes (LED ?).

5v - 3* 0.6 = 3,2V.

How to do that ?

with 'search function' not found.

Thanks for help , link or other info.


No rectifyer diodes black 1N4001 diodes connected in series.
Not the recommended method.