Solar panel Cooling unit help

Thread Starter

Hassan Wahaj Malik

Joined Oct 15, 2017
I have a 100W panel powering a peltier cooler and 2 Dc fans.
Th epeltier cooler uses 12V and 3Amps where as fans use 12V and 0.11A.
I am using a dc-to-dc buck converter to power the peltier cooler but i am kinda confused what i should use to power my fans with? The voltage regulator LM718CV3 supplies 1.5A which is too much for the fan and i believe it might smoke it. Any help would be appreciated.


Joined Jun 4, 2014
But it’s suppying 3Amps
It is supplying 12V and is capable of supplying a maximum of 3A. If you connect a 12V, 0.11A fan to it the fan will draw 0.11A and work just fine.

A car battery provides 12V and is capable of supplying 100's of amps, but the sidelight on the car (possibly needing just 0.5A) doesn't blow up when switched on.


Joined Jul 5, 2008
One better the light bulb in a lamp 20 amp wall outlet these newer led bulbs are less then 100 mA they last for a year or more.
Same as drinking water you can only drink as much as you can hold the fan will only sip it's .11amp