Finding correct inductor

Thread Starter

Icanmakeit67

Joined Sep 23, 2018
210
I’m building a project for a powerful mag lev display. I have a design source on Utube but the inductor, even with description has been tough to find. Please help
Below is circuit (link) and I’m trying to find the 1mH inductor filter.
Also the YouTube link to the project. There is info if you look in “ more” under the post

Circuit:
https://drive.google.com/file/d/1y6YrehhMEatbmyazctYJlHIgsUnsoPLg/view?usp=drivesdk

Project:

The inductor is seen in the schematic just to right after the 12v source voltage connection a the top of the schematic
I interested in the filter choke location /source, to purchase one for my project

THANKS FOR ANY HELP
 

Thread Starter

Icanmakeit67

Joined Sep 23, 2018
210
This one should work just fine ..................
5594-RL-1256-4-1000-ND

I didn't simulate the Power-Supply-Filter,
but at first glance I would guess that 10X the Capacitance would be an improvement.

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Thank You, searching (especially DigiKey) is not my favorite thing. Nice products and customer service too. Mouser seems easier?
Are you saying the capacitance shown at 6,600uf should be 10x greater?
 

LowQCab

Joined Nov 6, 2012
5,101
The Schematic uses "mF" which is an extremely outdated abbreviation.

In taking a quick glance, I assumed 6.6uF, which, I assumed, is probably too low to be effective.

There should probably be a ~100nF Ceramic-Capacitor on the Input to the first Voltage-Regulator
along with a ~470uF Electrolytic-Capacitor.

I have not simulated the Circuit to determine its stability, which may, or, may-not, matter very much.
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Thread Starter

Icanmakeit67

Joined Sep 23, 2018
210
The Schematic uses "mF" which is an extremely outdated abbreviation.

In taking a quick glance, I assumed 6.6uF, which, I assumed, is probably too low to be effective.

There should probably be a ~100nF Ceramic-Capacitor on the Input to the first Voltage-Regulator
along with a ~470uF Electrolytic-Capacitor.

I have not simulated the Circuit to determine its stability, which may, or, may-not, matter very much.
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.
.
Looking at this is appreciated. In ref to the 6.6 number it is actually when you see the circuit as an assembled board has two 3,300uf electrolytic capacitors in parallel. So I think there was a typo.
 
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