/tech/ - Technology★

>>937157 (OP)

Build something cool with them.

Put them in scalextric cars.

>>937157 (OP)

Hard drives don't use dc stepper motors?

>>937213

That would make more sense. It doesn't seem efficient to go from AC to DC back to AC.

>>937157 (OP)

>2 Three Phase AC motors from them.

Industrial electrician, here. You are a retard.

>>937226

He might not know. No need to call OP retard. He is here to learn like we all are.

>>937228

Don't you know, anon? We must always act like retarded constantly offended mulatto teenagers around here.

>>937228

absolutely, no one would ever risk to hurt op's feelings :^)

>>937226

They aren't as high power as your typical 3ph a/c motor, but they are certainly 3 phase. The motor controller is basically a high precision vfd

>>937326

they're brushless DC motors you fucking tech illiterate nigger

>>937336

>Brushless DC electric motor (BLDC motors, BL motors) also known as electronically commutated motors (ECMs, EC motors), or synchronous DC motors, are synchronous motors powered by DC electricity via an inverter or switching power supply which produces an AC electric current to drive each phase of the motor via a closed loop controller. The controller provides pulses of current to the motor windings that control the speed and torque of the motor.

>are synchronous motors

BLDC = synchronous AC motor + electronics

OP got rid of electronics.

OP now has synchronous AC motor.

>>937264

>>937308

Look at these gaywads.

>>937157 (OP)

Nah you need a speed controller to use them.

>>937349

>dc motors = ac motors

>built-in electronics clearly visible in op's pic

OH NO SWEETIE

I threw them to trash, rate.

ps. Also accidently threw my secondary laptop's power supply as well.

>>937837

>built-in electronics clearly visible

Nigger, those aren't electronics, that's just traces which lead to the internal coils of the motor. You're a dumbass.

More than 2 wires = generally not a real DC motor

>>947134

> than 2 wires = generally not a real DC motor

>real DC

HAHAHAHHAHAHA

it's a dc stepper motor, retard

>>947781

Im not the guy you are replying to.

I looked up the part number and its sold as a BLDC motor.

Most BLDC motors require alternating stator current. And if you take away the control circuitry as mentioned you get what appears to be an AC 3 phase motor. But very few motors are designed to run both ways. Thats why you check the manufacturer.

>>947785

>But very few motors are designed to run both ways.

Not sure what do you meant by that. BLDC just tells you that this motor is not intended for use with mains and requires a driving circuitry, often they also contain sensors to make driving them easier and more accurate. BLDC is a sub-family of synchronous motors (can also be induction motors) or AC motors. Calling it just a DC motor is a bit misleading, though. In that case one would assume that you can connect it to a constant voltage/current source and it would work without any additional parts, BLDC is better name in that case and that's why manufacturers use it.

>>947788

I meant what you just said... I think.

If you connected that thing to 3ph mains it would definitely not work.

Just as you rightly point out you cant connect DC straight to it.

I think the term BLDC just came from the applications rather than the function.

Its a good replacement for a DC motor in all sorts of cheap products.

OP, please test whether they are DC or AC motors.

If a sacrifice needs to be made, then so be it.

I have some HDDs that I could disassemble too. Hmm

OP is a retard who thinks mashing up few techie engineering words make him knowlagable about the topic and thinks that googlin "DIY tutorial" makes him master of the topic at hand.

Stop.