Need help wiring a solar panel to electric motor

  • Thread starter dogsnuts
  • Start date
  • #1
1
0

Main Question or Discussion Point

Hi everyone,
i want to make sure that when i wire this all up im not going to start a fire :)

So, i've got a 4W 12V solar panel the unit produces up to 333mA
a 12V battery and a 12V DC 15 RPM High Torque Gear Box Electric Motor.

I'm a newbie so don't much about electronics. All i want is for the motor to run and not blow me up.
Can someone please walk me though what needs to be done, or what i need to buy if what ive got is wrong.

Thanks in advance
 

Answers and Replies

  • #2
sophiecentaur
Science Advisor
Gold Member
24,455
4,427
I guess that, to be on the safe side, you should put a 1A fuse on the lead to the battery, right next to the battery terminal. The solar panel won't be capable of "blowing up" anything but a car battery can supply hundreds of Amps into a short circuit, if one should occur and could melt any leads and start a fire. A low value fuse will take care of that risk.
 
  • #3
20
0
A few things would be important here. I agree with sophiecentaur that a fuse is very important. But more than that, get a Schottky diode for the solar panel (schottky because of low voltage drop). I don't know what kind you have. It may have one built into it. But be sure. You don't want the battery to back-feed into the panel. It will burn it up if you're not careful.

Also, a lot of this depends on how you're hooking it up. If you have a solar panel with a diode in series then the battery in parallel with a fuse in series (and a switch hopefully) and then the motor, you should be fine. It may be wise to post a schematic of what you're doing if possible. Panels can get expensive, so you don't want to blow a bunch up.

---------------
Justin Coulston
justin.coulston@gmail.com
TheModernEngineer.blogspot.com
 

Related Threads on Need help wiring a solar panel to electric motor

Replies
3
Views
16K
Replies
11
Views
3K
  • Last Post
Replies
6
Views
666
  • Last Post
Replies
4
Views
649
Replies
1
Views
1K
Replies
4
Views
2K
Replies
4
Views
4K
Replies
1
Views
10K
  • Last Post
Replies
4
Views
2K
  • Last Post
7
Replies
153
Views
8K
Top