Small DC motor starting problem

Thread Starter

ERS79

Joined Oct 31, 2017
3
Hello,

I salvaged a small DC motor from a old camera, it has not details of voltage, amps, model number, nothing.

I tried to run with 2 x 1,5 AA battery, and it works pretty good. It will draw around 70mA. It will work fine also with one battery.

Used it to play with arduino (PWM) using a transistor as driver. Everything works fine, then I decided to use a small breadboard power supply module 3.3v/5v instead of the batteries, and the problem is that from what I can see it is not able to supply the starting current needed to make the motor spin.

It will draw around 170mA and the power supply led will even fade. If I give "help" to the motor with a finger it will start to spin.

I guess the problem is that the power supply is not able to handle the starting spike of current needed, so I was thinking of using somehow a capacitor in parallel with the motor to give that starting help, am I wrong with it?

If so, can you guys give me some help with it?

Thanks in advance
 

MaxHeadRoom

Joined Jul 18, 2013
19,012
What is the nature of the B.B. power supply, sounds like it is collapsing at switch on current.
You don't need a regulated supply for the motor.
Max.
 

Thread Starter

ERS79

Joined Oct 31, 2017
3
What is the nature of the B.B. power supply, sounds like it is collapsing at switch on current.
You don't need a regulated supply for the motor.
Max.
This is the BB power module, I am feeding it with a 12V switching power supply from my external HDD.


http://data:image/jpeg;base64,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
 

MaxHeadRoom

Joined Jul 18, 2013
19,012
I assume you are controlling the speed with the Arduino, so just use 12v and control the rpm with PWM, just don't over speed it.
You don't need exact motor voltage when the rpm is under control.
Max.
 

Thread Starter

ERS79

Joined Oct 31, 2017
3
Ok, from what I understand the switching
I assume you are controlling the speed with the Arduino, so just use 12v and control the rpm with PWM, just don't over speed it.
You don't need exact motor voltage when the rpm is under control.
Max.
Good point! Thank you!

But just for the sake of curiosity, the way I was doing it, was there any way of making it work? Just like the Capacitor idea or other way?
 

crutschow

Joined Mar 14, 2008
23,313
A capacitor in parallel with the motor would make the start-up worse.
You would place the capacitor across the supply voltage, before the starting switch.
It likely will need to be several hundred microfarad or more.
 

MaxHeadRoom

Joined Jul 18, 2013
19,012
Technically you should avoid the high inrush when implementing PWM as you can bring the rpm up slowly.
Obviously your B.B. P.S. cannot handle it, for a motor you do not need a regulated supply, or even a cap when using a small transformer and a bridge rectifier.
My choice would be a Mosfet to drive the motor with Arduino.
Max.
 
Top