/diy/ - Do It Yourself

>>1599224
last night you power supply drilled i am sister?

>I guess the drill is drawing too many amps?
Yes
>Can I connect two PSUs in parallel to give the drill more amps?
No

>>1599227
Bond Burgered.

>>1599224
use more than one 12v rail?

>>1599253
I used them all and the PSU literally shuts down for 30 seconds when the load is too much.

>>1599224
How many amps can take your PSU in the +12V channel?
It should be OK, I'm guessing its and overheating problem rather than a power capability

>>1599255
It says 14A for 12+ output

>>1599253
>>1599254
Same voltage rails are all connected dipstick

>>1599256
I would also need the drill specs but It seems that its actually to low, thats why the higher the voltage, the better as you need less amperage.
12Vx14A means 168W
Most 18V cordless drills consumes bettween 300-500W, so you rather need way more amps, (over 25A) for 12V or over 16A for 18V.
For 24, over 12A would be necessary, but dont know if these tools are capable of support that voltage

>>1599259
So back to the original question, can I connect two PSUs in parallel to get more amps? I have two PSUs both with 14A for 12v+. If I use them together I'd have 28 amps, right?

>>1599260
it's possible withing some considerations, being rather more complicated that it seems.

Read this article:
https://www.deltapsu.com/technical-articles/how-to-operate-parallel-and-series-connection

>>1599262
Thanks for that, but it seems way too confusing. I guess I'll just put the yellow wires from each supply together and hope for the best. What's the worst that can go wrong? A blown fuse and a small fire?

>>1599265
you risk losing one of the PSU, but chances that it working are high.
good luck

>>1599269
at this point is safer and cheaper to just buy a compatible off-brand battery replacement.

actually in this case just plug the drill straight into 110

>>1599224

find the smaller gauge yellow wire + smaller gauge black wire. these are the load sensing wires, hook em together

>>1599224
I'd post a video or even a link to how to make an 18v power supply but there are too many assholes on this board. google build 18v power supply Find an old single battery APC backups power supply, steal the transformer from that, get a heavy duty bridge rectifier, and a 10,000uf capacitor and you have a 30 amp linear power supply for your drill. I have built several.

>>1599304
I meant back-ups UPS not power supply. you can find them for cheap at thrift stores.

>>1599304
basically you need a heavy duty transformer that puts out 16v AC. when connected to a bridge rectifier you will get 22v which is what an 18v battery puts out when fully charged.

>>1599309

ITT: we design the worst corded tool ever.

>>1599314

>>1599311
I don't feel safe just looking at the picture.
I may be doing this, but with proper case though

>>1599311
>sticky pad strain relief

>>1599341
>>1599332
it was a temporary mount, for testing MORONS.
it's just to show how simple the powersupply is MORONS.

>>1599311
lol there's no way that dinky little transformer can do 300W

>>1599274
elaborate this?

>>1599224
Drills are powerful. Even NiCd batteries can deliver 30A.
>>1599228
>>Can I connect two PSUs in parallel to give the drill more amps?
>No
Depends. But you must connect 5V rail too, since 99.9% use it for stabilization.

>>1599355
correct it's rated for 400

>>1599465
my testing in making multiple power supplies for cordless equipment, is that most of them use 3 amps no load, and 7 amps under reasonable load. Stall load of coarse is way higher.

Get a beefy laptop power supply (or two, and an Y wire).
Mod a DC Barrel Power Jack on the drill, behind the motor. If you wire it correctly, it will switch automatically from battery power to the laptop power supply when you plug it in.

>>1599565

>>1599567

>>1599224
Why not just nigger rig up a cheap 18v drill pack to it? Or grab a Kobalt 24v pack for $20.

>>1599224


>You're sister. not using YOUR sister which is correct

yeah you arent even trying

>>1599455

i mean thats pretty much it

some psus use load sensing (smaller gauge of the color group, there will only be one of this gauge).

if im not mistaken i think it senses the voltage in 2 different spots and makes sure theres not a big variance, else it will auto shutdown because it assumes a fault.

so i was trying to make a vape out of the 12v rail of a psu, kept auto niggering. my logic: why not put the load sensing wires literally feeding into each other so it has no reason to shut down

well it worked great and im 2 weeks no cigarettes

>>1599273
Going to use several thousand feet of cord to drop the voltage and then a single diode plucked from an 8 track player to rectify it.

a corded drill costs 10 bucks

that's a lot cheaper than a beefy psu

>>1599834

ah yes the mostly unknown "semi-alternating current"

>>1599845
>that's a lot cheaper than a beefy psu
Protip: You can have them free out of an hotel's lost and found. Or just ask friends and family, laptops tend to die or become outdated.

>>1599849
Laptop power bricks tend to be around 60W-80W.

>>1599224
last night I powerfully impacted youre sister

>>1599883
That's not an impact drill though.

>>1599899

not with that attitude

>>1599311
this is what 75% of my diy power supplies looked like, they are still going strong today 10 years later!

>>1600414
You have the right attitude.

>>1599567
those connectors are only rated for 7 amps.

>>1600472
5 amps actually, but that is for continuous operation, not short bursts, and the fan of the drill motor will be blowing air into it all the time it is running, cooling it down.
Anyhow, you will be hard pressed to find a laptop charger that puts out that much, commonly they put out 4.72 A at most, but I have seen 6.32.

>>1599258
Not always, some designs have dedicated rails

Rebuild the battery pack with eneloops.