go_away

Author Topic: power supply problem for 12 v motor  (Read 2064 times)

0 Members and 1 Guest are viewing this topic.

Offline superchikuTopic starter

  • Supreme Robot
  • *****
  • Posts: 953
  • Helpful? 5
  • cooll
power supply problem for 12 v motor
« on: March 04, 2008, 11:44:01 AM »
hey ppl my problem is that i have got 2 12 v motors with 300 mA draw iam using l293d for motor control but iaam in a fix what kind of power supply to use i used 2 9 v battery in series and regulated it at 12v using an IC but the motors draw too much power so i gave it up so can u ppl help me by telling what kinda power supply i should use for the motors and also if i use ac and step it dow to 12v and then use bridge rectfier then can u plzz give the circuit

any kinda help is much appreciated
JAYDEEP ...

IT AND ROBOTICS ENGINEER

"IN THE END IT DOESNT EVEN MATTER"

Offline benji

  • Supreme Robot
  • *****
  • Posts: 832
  • Helpful? 0
Re: power supply problem for 12 v motor
« Reply #1 on: March 04, 2008, 04:41:53 PM »
do you mean your batteries are goin empty in a short time? buy a rechargable one
as in robots its not a good idea to rectify ac as you always have to connect it to your bot by a wire...
good ol' BeNNy

Offline ed1380

  • Supreme Robot
  • *****
  • Posts: 1,478
  • Helpful? 3
Re: power supply problem for 12 v motor
« Reply #2 on: March 04, 2008, 05:20:00 PM »
some lead acid batterys. or 2 6v nimh in series.
Problems making the $50 robot circuit board?
click here. http://www.societyofrobots.com/robotforum/index.php?topic=3292.msg25198#msg25198

Offline subcaptain

  • Beginner
  • *
  • Posts: 1
  • Helpful? 0
Re: power supply problem for 12 v motor
« Reply #3 on: March 04, 2008, 05:40:47 PM »
go to towerhobbies.com. Lots of battery choices. Most chargers for NiCd or NiMh won't charge to 12 volts, so what I do is wire two 6 volt packs in series but only charge one pack at a time. LiPoly is another choice. If you are going to do robotics you need to become familiar with RC airplane and car batteries. Good luck.

Offline superchikuTopic starter

  • Supreme Robot
  • *****
  • Posts: 953
  • Helpful? 5
  • cooll
Re: power supply problem for 12 v motor
« Reply #4 on: March 04, 2008, 09:35:47 PM »
i know non rechargable batteries are not a good idea but still rechargable batteries cost a lot and take lot of time to charge up time which i cannot afford so thats why  i decided to go with normal batteries and also nimh or nickel cadmimum batteries are not available here so thats the major problem
JAYDEEP ...

IT AND ROBOTICS ENGINEER

"IN THE END IT DOESNT EVEN MATTER"

Offline ed1380

  • Supreme Robot
  • *****
  • Posts: 1,478
  • Helpful? 3
Re: power supply problem for 12 v motor
« Reply #5 on: March 04, 2008, 09:50:26 PM »
if nicd or nimh arent available then what is? only thing i can think of is lantern batteries
Problems making the $50 robot circuit board?
click here. http://www.societyofrobots.com/robotforum/index.php?topic=3292.msg25198#msg25198

Offline superchikuTopic starter

  • Supreme Robot
  • *****
  • Posts: 953
  • Helpful? 5
  • cooll
Re: power supply problem for 12 v motor
« Reply #6 on: March 04, 2008, 10:01:33 PM »
ya lantern batteries but they are heavy and bulky now thats another problem nicd and nimh battery packs are costly and out of my budget iam really stuck plzz help
JAYDEEP ...

IT AND ROBOTICS ENGINEER

"IN THE END IT DOESNT EVEN MATTER"

Offline paulstreats

  • Supreme Robot
  • *****
  • Posts: 1,381
  • Helpful? 21
Re: power supply problem for 12 v motor
« Reply #7 on: March 05, 2008, 02:28:52 AM »

Offline Admin

  • Administrator
  • Supreme Robot
  • *****
  • Posts: 11,657
  • Helpful? 169
    • Society of Robots
Re: power supply problem for 12 v motor
« Reply #8 on: March 15, 2008, 05:23:34 PM »
actually, rechargeable batteries are cheaper than non-rechargeable . . .

not just in terms of mAh/$, but also since you do not need to constantly replace them . . .

 


Get Your Ad Here

data_list