Continuous power Source?

Discussions regarding building a walking robot at home. Most of the robots participating at Robo-One competitions are custom fabricated.
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Continuous power Source?

Post by Enderwiggins » Fri Jul 25, 2008 2:46 am

Post by Enderwiggins
Fri Jul 25, 2008 2:46 am

I found an old car battery charger (Schmacher Model SE-82-6) it has the following specs:

6A/2A Dual Rate Manual Charger, Steel Housing, UL, Schumacher's Best Selling Charger, Designed For The Economy Minded User, 2 Charging Rates, Charges Both 6 & 12V Batteries, 6A Medium Charge Rate For Most Everyday Needs, Charges In 6 To 8 Hours, 2A Trickle Charge, Charges A Small 12V Battery In 2 To 12 Hours.

Anyone know any way I could go about making this suitable for powering a robot?
I found an old car battery charger (Schmacher Model SE-82-6) it has the following specs:

6A/2A Dual Rate Manual Charger, Steel Housing, UL, Schumacher's Best Selling Charger, Designed For The Economy Minded User, 2 Charging Rates, Charges Both 6 & 12V Batteries, 6A Medium Charge Rate For Most Everyday Needs, Charges In 6 To 8 Hours, 2A Trickle Charge, Charges A Small 12V Battery In 2 To 12 Hours.

Anyone know any way I could go about making this suitable for powering a robot?
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Post by i-Bot » Fri Jul 25, 2008 12:04 pm

Post by i-Bot
Fri Jul 25, 2008 12:04 pm

I would avoid using this for a power supply. Battery charger outputs are usually unsmoothed and unregulated.

There are a lot of small 12V (or other) 5A switched mode PSU now available at reasonable cost. I would get one of those.
I would avoid using this for a power supply. Battery charger outputs are usually unsmoothed and unregulated.

There are a lot of small 12V (or other) 5A switched mode PSU now available at reasonable cost. I would get one of those.
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Post by Enderwiggins » Fri Jul 25, 2008 3:42 pm

Post by Enderwiggins
Fri Jul 25, 2008 3:42 pm

What about a regulated 6V 2A DC adapter? or better yet what is it that i should be looking for in a power source? other than voltage and current what other thinks can i look at in deciding whether something will or will not work?
What about a regulated 6V 2A DC adapter? or better yet what is it that i should be looking for in a power source? other than voltage and current what other thinks can i look at in deciding whether something will or will not work?
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Post by i-Bot » Fri Jul 25, 2008 4:32 pm

Post by i-Bot
Fri Jul 25, 2008 4:32 pm

The motors or servos will determine the voltage and the current you need. also the controller needs powering too. The power supply is the last and often easiest part to find.

Will you also use batteries and will these need to be charged by the PSU ?

I find flea markets and car boot sales best to find power supplies at 1 or 2 UK pounds (or less !) each. You need to read the labels carefully, the voltage and current must be OK, also make sure it is a DC supply (some give AC out). Also if it says regulated, this is a bonus.

The connectors are fairly common, but be careful to get the right internal pin diameter as well as the external. You can cut off the plug and use your own of course. Get a voltmeter which measures DC and AC and check the output to be DC, and also the polarity.
The motors or servos will determine the voltage and the current you need. also the controller needs powering too. The power supply is the last and often easiest part to find.

Will you also use batteries and will these need to be charged by the PSU ?

I find flea markets and car boot sales best to find power supplies at 1 or 2 UK pounds (or less !) each. You need to read the labels carefully, the voltage and current must be OK, also make sure it is a DC supply (some give AC out). Also if it says regulated, this is a bonus.

The connectors are fairly common, but be careful to get the right internal pin diameter as well as the external. You can cut off the plug and use your own of course. Get a voltmeter which measures DC and AC and check the output to be DC, and also the polarity.
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Post by Enderwiggins » Sat Jul 26, 2008 6:23 am

Post by Enderwiggins
Sat Jul 26, 2008 6:23 am

Thanks for all your replies! I is a very nervous man so it really helps to hear that things can be as simple as I hoped! ^^
Thanks for all your replies! I is a very nervous man so it really helps to hear that things can be as simple as I hoped! ^^
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