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InvisibleThUmB pRiNt
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Registered: 04/23/10
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36vdc Filter Fan unit d/c to a/c power supply Problem Solved *edited* 8/17/19 * 1
    #26131947 - 08/12/19 08:24 AM (4 years, 5 months ago)

Im in the laminar flow cabinet building stage of my hobby, but someone suggested instead of making a laminar flow cabinet I could just find a FFU (Fan Filter Unit) from eBay with the same specs as a laminar flow cabinet that way I will have less work to do to set it up, it’s cheaper, which means I can easily buy a bigger unit and they are less bulky than laminar flow

This is a Righteous idea!

These units have everything we need except a pre filter, these FFU’s usually have their own self contained fans and filter.


G

After a long night of shopping around and review countless FFU’s I accidentally chose this dc powered unit instead of the 1 a/c powered unit they have left.

BUT... I hope there’s a cost effective way to power to this because the unit that runs on a/c power’s shipping cost is just as much as the unit... $250 so if I have to buy that unit I will be spending about $300 more than I spent on the dc power unit.

Soo how can we run one ☝️ of these on ac power?

Do these already come with a power supply that converts ac to dc?

Thanks a million

Anyone reading this please feel free to ask any questions here or you can pm me.

I originally wrote this up looking for help but have since then solved the issues I faced with the help of a couple fellow Shroomerites which means THIS WAS NOT ORIGINALLY A WRITE UP OR A GUIDE but you can still get all the info you need and want if you look hard enough or if you ask.

Thanks you all for reading and for helping, those of you that helped...

Updates!!!



Im almost done, I still have to add a potentiometer to be able to regulate the fans speeds since the pre filters added too much sp.

Thanks for all the help to everyone that pitched in, i wouldn’t have been able to do it without you guys!

10/17/19 Update!



Before this the fans did not blow hard enough because the pre-filters I installed added too much StaticPressure.

Now the FFU is up n running with variable speed and definitely blowing hard enough!!!

The little aluminum cylinder on the back of the unit inside that open box is the potentiometer nob it’s around half speed, maybe a tan higher.

I took the entire filter off and found a good spot to drill the hole for the potentiometer Nob to slide through. I purposely put it so that it would come out of the unit meanwhile still inside one of the boxes on the back to protect it.

I have yet to use it for a session but I did run it for a good 10-15 min and it’s a dream come true!



Edited by ThUmB pRiNt (10/17/19 10:02 PM)


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OfflineBuster_Brown
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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26132304 - 08/12/19 01:29 PM (4 years, 5 months ago)

I just remembered Something that had a 36 volt...maybe it's my printer?..No, it's 24 volt. So if you have a junk shop you might try that ave'.


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OfflineBuster_Brown
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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: Buster_Brown]
    #26132340 - 08/12/19 01:54 PM (4 years, 5 months ago)

How many Watts do you need?



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InvisibleThUmB pRiNt
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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: Buster_Brown]
    #26132486 - 08/12/19 04:03 PM (4 years, 5 months ago)

I don’t see that anywhere on the info I was provided, unfortunately.


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OfflineBuster_Brown
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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26132572 - 08/12/19 04:59 PM (4 years, 5 months ago)

My signal is so slow I didn't see the 4.2 Amps but wit that and the equation: Volts x Amps = Watts, we know that 36 volts x 4.2A = 151.2 Watts, so if you decide that it's more economical to splice diodes into your household electric supply wire to the device you'll know what diodes to shop for e.g 36 volt 160 watts = 16 x 10 watt Diodes if I'm not mistaken, equaling @ $150


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InvisibleThUmB pRiNt
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Male


Registered: 04/23/10
Posts: 992
Loc: Southern East Coast, The ...
Re: 36vdc Filter fan unit a/c power supply Help needed [Re: Buster_Brown]
    #26132614 - 08/12/19 05:28 PM (4 years, 5 months ago)

I think I found some possible solutions...

A power supply ...

Specs
Related
Accessories
154.8W 36V 4.3A Single Output Switchable Power Supply

36 Volts @ 4.3 Amps
Features

AC input range selectable by a switch
Withstand 300 VAC surge input for 5 seconds
No load power consumption <0.5W
Miniature size and 1U low profile
High operating temperature, up to 70°C
Protections: Short circuit / Overload / Over voltage / Over temperature
Cooling by free air convection
Compliance to IEC/EN 60335-1 (PD3) and IEC/EN 61558-1, 2-16 for household appliances
Operating altitude up to 5000 meters
Withstand 5G vibration test
High efficiency, long life and high reliability
LED indicator for power on
100% full load burn-in test
3 year warranty

Or

150W Single Output Switching LED Power Supply


36 Volts @ 4.2 Amps

Features:
Universal AC input / Full range (up to 295VAC)
High efficiency 91%
Protections: Short circuit / Overload / Over voltage / Over temperature
Built-in active PFC function
Cooling by free air convection
OCP point adjustable through output cable or internal potential meter
Suitable for LED lighting and moving sign applications
IP67 design for indoor or outdoor installations
Compliance to worldwide safety regulations for lighting
3 years warranty

Or something along those lines

What do you think?


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OfflineBuster_Brown
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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: Buster_Brown]
    #26132618 - 08/12/19 05:30 PM (4 years, 5 months ago)

Here we go $16

You'd better p.m Koraks for a second opinion. link


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InvisibleThUmB pRiNt
Student of a Celestial Source
Male


Registered: 04/23/10
Posts: 992
Loc: Southern East Coast, The ...
Re: 36vdc Filter fan unit a/c power supply Help needed [Re: Buster_Brown]
    #26132640 - 08/12/19 05:43 PM (4 years, 5 months ago)

Quote:

Buster_Brown said:
Here we go $16

You'd better p.m Koraks for a second opinion. link





Who’s that?


--------------------
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OfflineBuster_Brown
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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26132751 - 08/12/19 06:45 PM (4 years, 5 months ago)

A wise man who can check my figures. How much are those power suppliers?

Oh, yeah $45, looks like a good deal :thumbup:


Edited by Buster_Brown (08/12/19 07:11 PM)


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InvisibleThUmB pRiNt
Student of a Celestial Source
Male


Registered: 04/23/10
Posts: 992
Loc: Southern East Coast, The ...
Re: 36vdc Filter fan unit a/c power supply Help needed [Re: Buster_Brown]
    #26132994 - 08/12/19 09:49 PM (4 years, 5 months ago)

Even better yet...

$19.99

154.8W 36V 4.3A Single Output Switchable Power Supply

36 Volts @ 4.3 Amps


--------------------
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OfflineBuster_Brown
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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26133168 - 08/13/19 02:14 AM (4 years, 5 months ago)

Yeah, the mistake in my calculations was overlooking the AC to DC inversion, so those DC power suppliers would be the way to go, plus maybe a fuse if you were so inclined.


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InvisibleThUmB pRiNt
Student of a Celestial Source
Male


Registered: 04/23/10
Posts: 992
Loc: Southern East Coast, The ...
Re: 36vdc Filter fan unit a/c power supply Help needed [Re: Buster_Brown]
    #26133209 - 08/13/19 03:46 AM (4 years, 5 months ago)

Quote:

Buster_Brown said:
Yeah, the mistake in my calculations was overlooking the AC to DC inversion, so those DC power suppliers would be the way to go, plus maybe a fuse if you were so inclined.




Even though I purchased this FFU, I will still be building a laminar flow cabinet...

...

And

...

I’ll be raffling it off in the marketplace...


--------------------
Love, Light & Happy Trails

THUMB PRINT'S TRADE LIST


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OfflineBuster_Brown
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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26133217 - 08/13/19 04:06 AM (4 years, 5 months ago)

How many $10 tickets will you expect to cover shipping etc?


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InvisibleThUmB pRiNt
Student of a Celestial Source
Male


Registered: 04/23/10
Posts: 992
Loc: Southern East Coast, The ...
Re: 36vdc Filter fan unit a/c power supply Help needed [Re: Buster_Brown]
    #26133233 - 08/13/19 04:43 AM (4 years, 5 months ago)

They are gonna be $20-$25 a ticket plus the winner and I split the shipping.

Im still working out a few things like the fact that i haven’t got all the materials yet so I’m not sure of the total cost of the project so I’m not sure how many tickets I have to sell.

Ive experiences a series of beautiful events and some blessing have materialized for me and not I would like to share the blessing meanwhile creating creatively on a project that I will also embark on myself.

I decided to do this when as I researched the parts I want for my flow cabinet all the integral parts to build a smaller unit than the one I want for myself just happened to jump out to find me and at a reasonable price too, which is great because I’m this field many companies hike their prices through the roof.

So this is by no means a “FREE” giveaway, more like a chance to save a lot of money time work and you’ll be helping out a fellow Shroomsrite Brother in needs out with some monetary help do to me not having worked for 6 months due to unforeseen completely luck of the draw medical issue.

I’m looking for a way to occupy my newly freed up time while helping others and myself out at the same time and having a tons of fun while doing it.

What do you think about the idea ?

Idk yet if I should split the shipping with the winner or not.

I mean getting a really nice flow cabinet for just the cost of shipping and a $20-$25 ticket sounds amazing to me and I would participate in and win that raffle.


--------------------
Love, Light & Happy Trails

THUMB PRINT'S TRADE LIST


Edited by ThUmB pRiNt (08/13/19 05:58 AM)


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OfflineBuster_Brown
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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26133463 - 08/13/19 09:09 AM (4 years, 5 months ago)

Refining your knowledge base while serving the public interest sounds like an admirable endeavor.

Records are the glitch in my own process, finding notes from 20 years ago on various topics can be exasperating.


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Invisiblekoraks
Registered: 06/02/03
Posts: 26,670
Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26133467 - 08/13/19 09:15 AM (4 years, 5 months ago)

Don't hook anything up directly to mains supply (using diodes or whatever). Some kind of galvanic separation between mains and any device in your home is advisable for safety reasons. In this case, just shop for any run-off-the-mill switch-mode power supply. I did a quick search on Banggood to see what pops up and it seems that 36V will be easy-peasy.

https://www.banggood.com/36V-180W-AC-DC-Switching-Power-Supply-Board-High-Power-Industrial-Power-Supply-Module-p-1111658.html?rmmds=search&cur_warehouse=CN Small and cheap, but you would be running it at pretty much max. capacity, which means you will probably have to upgrade the coolers on the active components (the aluminum bits jotting out from the device) and it may have a shorter lifespan than expected at your power level. Hence, it may work in a pinch, but I wouldn't put my money on it in the long run. It'll run hot and will require additional cooling in order to make it last. The same goes for the 4.3A unit you found.
https://www.banggood.com/LCD-110220V-0-36V-15A-480W-Regulated-Switch-Power-Supply-Switching-Power-Supply-Transformer-p-1323740.html?rmmds=search&cur_warehouse=CN Will provide more than enough power; actively cooled by the looks of it, but a bit more costly.

Similar devices can be found on AliExpress or eBay; just search for '36V power supply'. In selecting one for your use, make sure it can supply AT LEAST 5A (180W) but preferably 7A or more (>250W) to give you some headroom.

Btw, I'm surprised that that thing draws so much power; I bet it's a noisy son of a bitch.


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InvisibleThUmB pRiNt
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Registered: 04/23/10
Posts: 992
Loc: Southern East Coast, The ...
Re: 36vdc Filter fan unit a/c power supply Help needed [Re: koraks]
    #26133607 - 08/13/19 11:04 AM (4 years, 5 months ago)

Quote:

koraks said:
Don't hook anything up directly to mains supply (using diodes or whatever). Some kind of galvanic separation between mains and any device in your home is advisable for safety reasons. In this case, just shop for any run-off-the-mill switch-mode power supply. I did a quick search on Banggood to see what pops up and it seems that 36V will be easy-peasy.

https://www.banggood.com/36V-180W-AC-DC-Switching-Power-Supply-Board-High-Power-Industrial-Power-Supply-Module-p-1111658.html?rmmds=search&cur_warehouse=CN Small and cheap, but you would be running it at pretty much max. capacity, which means you will probably have to upgrade the coolers on the active components (the aluminum bits jotting out from the device) and it may have a shorter lifespan than expected at your power level. Hence, it may work in a pinch, but I wouldn't put my money on it in the long run. It'll run hot and will require additional cooling in order to make it last. The same goes for the 4.3A unit you found.
https://www.banggood.com/LCD-110220V-0-36V-15A-480W-Regulated-Switch-Power-Supply-Switching-Power-Supply-Transformer-p-1323740.html?rmmds=search&cur_warehouse=CN Will provide more than enough power; actively cooled by the looks of it, but a bit more costly.

Similar devices can be found on AliExpress or eBay; just search for '36V power supply'. In selecting one for your use, make sure it can supply AT LEAST 5A (180W) but preferably 7A or more (>250W) to give you some headroom.

Btw, I'm surprised that that thing draws so much power; I bet it's a noisy son of a bitch.






The Calvary has arrived!!!

Thank you all for your help!

I will implement what I’ve learned!


--------------------
Love, Light & Happy Trails

THUMB PRINT'S TRADE LIST


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InvisibleThUmB pRiNt
Student of a Celestial Source
Male


Registered: 04/23/10
Posts: 992
Loc: Southern East Coast, The ...
Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26139268 - 08/16/19 10:46 PM (4 years, 5 months ago)

Guys it’s here





This is it, these are the guts.

The 2 bottom right black wires in that last picture labeled N24B and X1186 under them it says failure and the wire lead out of the box and are cut off so I’m not sure where they went or what they were for.

Maybe a safety shut off


--------------------
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InvisibleThUmB pRiNt
Student of a Celestial Source
Male


Registered: 04/23/10
Posts: 992
Loc: Southern East Coast, The ...
Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26139271 - 08/16/19 10:47 PM (4 years, 5 months ago)

This box that I opened up on top of the unit, is this an ac to dc power source?

If I’m not mistaken it was connected 240 and this box here converted it to dc

I see red black and green with a yellow stripe so I’m assuming its 2 120v lines and a ground


--------------------
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Edited by ThUmB pRiNt (08/16/19 11:18 PM)


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Invisiblekoraks
Registered: 06/02/03
Posts: 26,670
Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26139530 - 08/17/19 06:04 AM (4 years, 5 months ago)

Quote:

ThUmB pRiNt said:
This box that I opened up on top of the unit, is this an ac to dc power source?

If I’m not mistaken it was connected 240 and this box here converted it to dc

I see red black and green with a yellow stripe so I’m assuming its 2 120v lines and a ground



Doesn't look like it. Looks like a low-pass LC filter, possibly to filter out HF noise on the DC power supply. BTW, red/black is not common wiring for AC; that would be brown/blue (and yellow/green for ground). Also, your logic of '2x 120VAC cables makes 240V AC' doesn't make sense. Doesn't work that way.

The 'failure' terminals look like an output in which both terminals are connected in case of a failure of the fan/filter unit as determined by its onboard logic. They could, for example, be used to hook up a lamp to signal failure of the unit.

CN2 looks like a set of external connectors that can be used to switch the fans and regulate their speed (with an external 10k pot meter). Could be useful for you.

The area on the PCB in the vicinity of the two 6-pin fan connectors and the round inductor labeled 'in/out' in addition to the VR1 and VR2 trimpots looks like a DC-DC converter. Makes me wonder what it's intended for; I also notice that there is a '5v' indicator on the PCB; the 5V is likely used for the logic (the big square chip and its periphery) but it's not clear what the 12V is for. It's possible that the fans actually run on 12V and that individual inductor coils of the fans are connected separately to the PCB using the 6-pin connectors and that the external 36V power supply is only used to keep the current requirement manageable. In that case, it's conceivable that the unit could be supplied fairly easily using an omnipresent 12V power supply (and sufficiently heavy cables - >12A!)

Anyway, don't try to hook this up to 120VAC or 240VAC. You'll only end up making a bit of smoke.


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