DC power supply for auto doser - The Planted Tank Forum
 
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post #1 of 4 (permalink) Old 01-31-2014, 06:38 PM Thread Starter
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DC power supply for auto doser

So I pretty much think I have figured out how the auto dosers work but how do you get power to them?

Do I have to buy a 12v dc power supply and cut the end off and hook the negative and positive to the board? Sorry im new to this!!!


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post #2 of 4 (permalink) Old 01-31-2014, 07:03 PM
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what auto doser?
Do you mean a peristaltic pump and driver like a few threads below?


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post #3 of 4 (permalink) Old 01-31-2014, 07:08 PM
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There are likely to be different dosers out on the market. Can you tell us what the rating is for your doer as far as voltage and milliamp, amps or watts?

If you have a 12v doser, the way to go is to get a power supply of the same voltage, 12VDC, 12VAC,etc. The other spec to look for is the power, either milliwatts, watts or amps. Should be on a label or spec with the equipment. Then make sure the power supply put out at least that amount. More does not hurt on this. More is actually better on this as it gives some spare to account for slight variations in the ratings.
A 12 VDC power supply for a 12VDC doser needing 20 milliamp might be able to provide 1000 milliamp ( a amp) and be good. For small stuff the cheap easy way is to get a surplus plug in (wall wart?) from places like Goodwill and cut the plug off. Can't beat the $2 price! You can buy a ready made power supply but it might cost you $20/
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post #4 of 4 (permalink) Old 02-01-2014, 06:14 PM Thread Starter
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Quote:
Originally Posted by PlantedRich View Post
There are likely to be different dosers out on the market. Can you tell us what the rating is for your doer as far as voltage and milliamp, amps or watts?

If you have a 12v doser, the way to go is to get a power supply of the same voltage, 12VDC, 12VAC,etc. The other spec to look for is the power, either milliwatts, watts or amps. Should be on a label or spec with the equipment. Then make sure the power supply put out at least that amount. More does not hurt on this. More is actually better on this as it gives some spare to account for slight variations in the ratings.
A 12 VDC power supply for a 12VDC doser needing 20 milliamp might be able to provide 1000 milliamp ( a amp) and be good. For small stuff the cheap easy way is to get a surplus plug in (wall wart?) from places like Goodwill and cut the plug off. Can't beat the $2 price! You can buy a ready made power supply but it might cost you $20/
Awesome! Thank you! Thats exactly what I was wondering! I have a few old phone charges laying around the house and if they arent 12 dc (most are) ill just go to goodwill like you said! Better to recycle than to buy a brand new one! Thanks so much again! Can't wait to get my auto doser up and running!


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