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11-02-2011, 09:23 PM
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#1 | | Hypervaporation in effect Join Date: Sep 2011 Location: Deep in the Heart of the greatest state in the Union
Posts: 1,516
| Ok. I purchased a few things from MVs and have a question.
The LDO 5 volt, 5.0 amp regulator they sell is one of the things I purchased. After reading the spec sheet on it again, I am puzzled as to why they added a 470k resistor in the package with the regulator. I purchased some resistors and capacitors separately also. One of which was the same resistor 10x. All 10 were in the pack. What would have been nice of them is to put a couple extra caps in with it, as I can not see a reason to use a resistor with it. Anyone? BTW - I keep reading about how Madvapes always gives everyone3 free stuff.. Lots of free stuff.. Spent plenty of $$ and did not get sh  t free. Figures.. TI on the other hand had 5 regulators at my door 9 hours after i ordered it.. Hows that for service. Ordered at midnight last night and Fedex shows up this morning at 9.. WOW.. Did I mention they were free samples.. 
This is the regulator in question. Straight up 5v mod. Nothing fancy. http://www.madvapes.com/LDO-5-volt-5...or_p_2299.html
Thx in advance for any help. Also, when reading the spec if you get there. This is the 1084-50 version set at 5v out.
__________________ Drip that tip, to wet the wire. Now vape that juice, no need for fire  Hypervaporation effect in effect
Last edited by wetwire; 11-02-2011 at 09:26 PM..
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11-02-2011, 09:27 PM
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#2 | | Vapezilla Join Date: Oct 2010 Location: Heaven
Posts: 9,724
| Quote:
Originally Posted by wetwire  Ok. I purchased a few things from MVs and have a question.
The LDO 5 volt, 5.0 amp regulator they sell is one of the things I purchased. After reading the spec sheet on it again, I am puzzled as to why they added a 470k resistor in the package with the regulator. I purchased some resistors and capacitors separately also. One of which was the same resistor 10x. All 10 were in the pack. What would have been nice of them is to put a couple extra caps in with it, as I can not see a reason to use a resistor with it. Anyone? BTW - I keep reading about how Madvapes always gives everyone3 free stuff.. Lots of free stuff.. Spent plenty of $$ and did not get sh t free. Figures.. TI on the other hand had 5 regulators at my door 9 hours after i ordered it.. Hows that for service. Ordered at midnight last night and Fedex shows up this morning at 9.. WOW.. Did I mention they were free samples..
This is the regulator in question. Straight up 5v mod. Nothing fancy. http://www.madvapes.com/LDO-5-volt-5...or_p_2299.html
Thx in advance for any help. Also, when reading the spec if you get there. This is the 1084-50 version set at 5v out. | IDK for your question but I've order quite a bit from madvapes and never received anything free, sample of something or otherwise.... | 
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11-02-2011, 09:37 PM
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#3 | | Hypervaporation in effect Join Date: Sep 2011 Location: Deep in the Heart of the greatest state in the Union
Posts: 1,516
| Quote:
Originally Posted by RY4 IDK for your question but I've order quite a bit from madvapes and never received anything free, sample of something or otherwise.... | Well thx for that.. in a bad way I feel good.. or better anyhow..  Especially since both of the clearomizers I purchased already fell apart after very light use. And the DC mega XL ss one is so clogged my head hurts after trying to hit it.. On the flip side. The SC versions (the cheapest) ROX BTW - The clearomizers sure get gross looking after a few uses.. Looks like well. muck.. Think I am sold on hiding that. Not a great sell point. Or maybe I could just dye the juice blue.
__________________ Drip that tip, to wet the wire. Now vape that juice, no need for fire Hypervaporation effect in effect
Last edited by wetwire; 11-02-2011 at 09:55 PM..
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11-02-2011, 09:54 PM
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#4 | | Vapezilla Join Date: Oct 2010 Location: Heaven
Posts: 9,724
| Quote:
Originally Posted by wetwire Well thx for that.. in a bad way I feel good.. or better anyhow.. Especially since both of the clearomizers I purchased already fell apart after very light use. And the DC mega XL ss one is so clogged my head hurts after trying to hit it.. On the flip side. The SC versions (the cheapest) ROX | Your not alone buddy. I haven't order cartos from them in a long time. I had a lot of bad luck with DOAs. I never contacted them about it and probably should have. I did call their CS once about chargers and they were very helpful. | |
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11-02-2011, 09:56 PM
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#5 | | Couldnt take it anymore Join Date: Sep 2010 Location: Mod impersonation carries a stiff penalty YKWYA
Posts: 10,761
| maybe they assumed you were going to need one for an led maybe?
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11-02-2011, 10:11 PM
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#6 | | Hypervaporation in effect Join Date: Sep 2011 Location: Deep in the Heart of the greatest state in the Union
Posts: 1,516
| Quote:
Originally Posted by berger maybe they assumed you were going to need one for an led maybe? | Thought that initially myself.. But
1. I did not buy any LEDs
2. Already bought 10x exactly like it. That one made 11
3. Its the wrong size for almost any LED I have ever seen. 470k (see note)
4. I did buy 10x 470 ohm which are ok for some LEDs depending on the voltage.
Note - Of the ones that were marked 470k all ohm'ed out at about 220k -350k. Checked about four of them. Dunno about that. The ones that one marked 470 were correct. I do find it interesting that they manage to sell all that stuff and have 2 size res and 1 itty bitty cap, and it seems like from their how-tos you could build out anything with them.. Like all LEDs use the same res. All reg use the same cap.. Don't think so.
__________________ Drip that tip, to wet the wire. Now vape that juice, no need for fire Hypervaporation effect in effect
Last edited by wetwire; 11-02-2011 at 11:06 PM..
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11-02-2011, 10:13 PM
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#7 | | Hypervaporation in effect Join Date: Sep 2011 Location: Deep in the Heart of the greatest state in the Union
Posts: 1,516
| New Avatar!
edit - fail
Does the server take a while to refresh the avatar somehow? nm.. God forbid I go OT.. Need some brains working on the actual dilemma.
__________________ Drip that tip, to wet the wire. Now vape that juice, no need for fire Hypervaporation effect in effect | |
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11-02-2011, 10:18 PM
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#8 | | awarded title of Sir Arse Join Date: Apr 2009 Location: Louisiana
Posts: 6,660
| You have exceeded the maximum number of avatars, you are stuck for life.
Just kidding.
__________________
A good e-juice, fresh carto, and 3.7 volts from a REALLY REALLY BIG battery works for me. YMMV
Originally Posted by Rocketman
...Quasi was right...Once
...OK, Twice...Maybe | |
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11-02-2011, 10:33 PM
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#9 | | Couldnt take it anymore Join Date: Sep 2010 Location: Mod impersonation carries a stiff penalty YKWYA
Posts: 10,761
| could be a size limit problem with the avatar..if its over it tries to reduce it and sometimes just gives up if its too big
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11-02-2011, 10:41 PM
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#10 | | Hypervaporation in effect Join Date: Sep 2011 Location: Deep in the Heart of the greatest state in the Union
Posts: 1,516
| It shows up properly in the CP.. hmm lil big on the pixel side but only 41k .. Anyway... forget I asked... WHY do them mad hatters give me a res.. I guess I will email them.. or maybe I won't.. Ya.. Ticket system FTW.. not
__________________ Drip that tip, to wet the wire. Now vape that juice, no need for fire Hypervaporation effect in effect
Last edited by wetwire; 11-02-2011 at 10:49 PM..
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11-02-2011, 10:44 PM
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#11 | | Hypervaporation in effect Join Date: Sep 2011 Location: Deep in the Heart of the greatest state in the Union
Posts: 1,516
| Last try.. promise
DOH!..
__________________ Drip that tip, to wet the wire. Now vape that juice, no need for fire Hypervaporation effect in effect | |
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11-02-2011, 10:49 PM
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#12 | | Vapezilla Join Date: Oct 2010 Location: Heaven
Posts: 9,724
| I see you got it.... those eyes are cooooool..... | |
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11-02-2011, 11:04 PM
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#13 | | Hypervaporation in effect Join Date: Sep 2011 Location: Deep in the Heart of the greatest state in the Union
Posts: 1,516
| Quote:
Originally Posted by RY4 I see you got it.... those eyes are cooooool..... | Starred at em for like.. ever... woooahh getting dizzy
Ticket sent in to MV.. One of you brains has got to know.. ICU
__________________ Drip that tip, to wet the wire. Now vape that juice, no need for fire Hypervaporation effect in effect | |
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11-03-2011, 12:04 AM
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#14 | | Senior Member Join Date: Aug 2011 Location: Gainesville, Florida
Posts: 557
| Quote:
Originally Posted by wetwire Well thx for that.. in a bad way I feel good.. or better anyhow.. Especially since both of the clearomizers I purchased already fell apart after very light use. And the DC mega XL ss one is so clogged my head hurts after trying to hit it.. On the flip side. The SC versions (the cheapest) ROX BTW - The clearomizers sure get gross looking after a few uses.. Looks like well. muck.. Think I am sold on hiding that. Not a great sell point. Or maybe I could just dye the juice blue. | You should definitely send them a message and tell them about any problems that you have. I never get anything free in my shipments either, but I ordered an epower DCC from them and it was DOA. they gave me points as a refund. | |
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11-03-2011, 12:17 AM
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#15 | | Hypervaporation in effect Join Date: Sep 2011 Location: Deep in the Heart of the greatest state in the Union
Posts: 1,516
| Quote:
Originally Posted by Kali You should definitely send them a message and tell them about any problems that you have. I never get anything free in my shipments either, but I ordered an epower DCC from them and it was DOA. they gave me points as a refund. |
Thx.. I did.. I think who ever was pulling the order likely just put one in because the 4 pin style use them. Maybe he/she just did not realize it was not needed. Hope that is the case because I can't see what else it would be for, but I don't want to build it out if I simply do not understand.
I would have thought someone here would have a clue but..
Neat lil free proggie I found for any electronics buffs out there. Pretty useful and does a ton of stuff. http://www.electronics2000.co.uk/
__________________ Drip that tip, to wet the wire. Now vape that juice, no need for fire Hypervaporation effect in effect | |
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11-03-2011, 12:33 AM
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#16 | | awarded title of Sir Arse Join Date: Apr 2009 Location: Louisiana
Posts: 6,660
| Here is the instructions for the MV 5 volt box. http://www.madvapes.com/How-to-Build...x-Mod_b_8.html
The 470Kohm resistor has a function. Here is the spec sheet for the regulator you are using. http://www.fairchildsemi.com/ds/KA/KA378R05.pdf
A resistor that goes between a logic control input and ground (pins 3 and 4 on the regulator) is called a
pull down resistor. Without it the regulator "may" come on during a full moon all by itself.
Ignore all of this, OP knows this, Rocket did read
__________________
A good e-juice, fresh carto, and 3.7 volts from a REALLY REALLY BIG battery works for me. YMMV
Originally Posted by Rocketman
...Quasi was right...Once
...OK, Twice...Maybe
Last edited by Rocketman; 11-03-2011 at 12:59 AM..
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11-03-2011, 12:34 AM
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#17 | | Senior Member Join Date: Nov 2009 Location: San Diego
Posts: 186
| TI Regulators rule!!! sshhhh I've gotten more than 5 free hee he
Last edited by Robert; 11-03-2011 at 12:39 AM..
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11-03-2011, 12:42 AM
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#18 | | awarded title of Sir Arse Join Date: Apr 2009 Location: Louisiana
Posts: 6,660
| Robert, have you tried a switching regulator yet?
Like the Murata OK-R-T6? You could make a fixed voltage regulator with two resistors. A pull down and a voltage set resistor. Bigger than a To-220 but not by much.
I have some photos of one HERE: Rocket's Driving Down The Freeway Mod
and here: Rocket's Driving Down The Freeway Mod
They have a 3 amp, 6 amp and 10 amp version. The 3 amp (about $6) and a 7Kohm pull down (9 cents) and a range resistor (between 220 and 440 ohms, 9 cents), shipped from Digikey ($2.39 shipping).
You could make the 4.5 volt, 90% efficiency Detonator.
__________________
A good e-juice, fresh carto, and 3.7 volts from a REALLY REALLY BIG battery works for me. YMMV
Originally Posted by Rocketman
...Quasi was right...Once
...OK, Twice...Maybe | |
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11-03-2011, 12:49 AM
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#19 | | Hypervaporation in effect Join Date: Sep 2011 Location: Deep in the Heart of the greatest state in the Union
Posts: 1,516
| Quote:
Originally Posted by Rocketman | Nope - Me gotz 3 pin.. not todaly tarded Mr Rocket.. but thx.. Any other ideas...
Have total of 12 regs (several different types of course ) from TI... wanna burn up some of these first
__________________ Drip that tip, to wet the wire. Now vape that juice, no need for fire Hypervaporation effect in effect
Last edited by wetwire; 11-03-2011 at 12:53 AM..
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11-03-2011, 12:52 AM
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#20 | | awarded title of Sir Arse Join Date: Apr 2009 Location: Louisiana
Posts: 6,660
| With the 3 pin you don't need the 470K, must have been a packing error.
You got a Freebie
Sorry, I didn't read your original post completely. You referenced the 3 pin regulator.
__________________
A good e-juice, fresh carto, and 3.7 volts from a REALLY REALLY BIG battery works for me. YMMV
Originally Posted by Rocketman
...Quasi was right...Once
...OK, Twice...Maybe | |
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11-03-2011, 12:59 AM
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#21 | | Hypervaporation in effect Join Date: Sep 2011 Location: Deep in the Heart of the greatest state in the Union
Posts: 1,516
| Quote:
Originally Posted by Rocketman With the 3 pin you don't need the 470K, must have been a packing error.
You got a Freebie
Sorry, I didn't read your original post completely. You referenced the 3 pin regulator. |
LOVE the freebies... woot 13 cent gain for WW!
But really, couple caps no resistor then? Maybe just the one cap?
__________________ Drip that tip, to wet the wire. Now vape that juice, no need for fire Hypervaporation effect in effect | |
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11-03-2011, 01:13 AM
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#22 | | awarded title of Sir Arse Join Date: Apr 2009 Location: Louisiana
Posts: 6,660
| The input cap (100uf) is to reduce load reflections on the incoming power bus. Each time you activate the regulator with an atty/carto on it, a pulse of current is felt by the voltage source. This would be necessary if you were using the 5 volts from a USB port or some other regulated adapter. If running from a battery, not really needed.
The output cap levels out the load and reduces the load reflection back to the regulator. If you were to drive an audio amplifier for instance.
Dynamic load changes are what they are trying to eliminate. They could cause the circuit to go into oscillation. But with a fixed load like an atty and a low impedance source like a Li-ion battery pack, lots of capacitance isn't really needed.
I would put a small electrolytic (about 1uf) on the output. Under really light loads (like hitting the fire button with an open atty or NO atty), the regulator might go into self oscillation and kill something inside (lots of stuff inside). Long shot, but could happen.
__________________
A good e-juice, fresh carto, and 3.7 volts from a REALLY REALLY BIG battery works for me. YMMV
Originally Posted by Rocketman
...Quasi was right...Once
...OK, Twice...Maybe | |
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11-03-2011, 01:27 AM
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#23 | | Hypervaporation in effect Join Date: Sep 2011 Location: Deep in the Heart of the greatest state in the Union
Posts: 1,516
| Quote:
Originally Posted by Rocketman The input cap (100uf) is to reduce load reflections on the incoming power bus. Each time you activate the regulator with an atty/carto on it, a pulse of current is felt by the voltage source. This would be necessary if you were using the 5 volts from a USB port or some other regulated adapter. If running from a battery, not really needed.
The output cap levels out the load and reduces the load reflection back to the regulator. If you were to drive an audio amplifier for instance.
Dynamic load changes are what they are trying to eliminate. They could cause the circuit to go into oscillation. But with a fixed load like an atty and a low impedance source like a Li-ion battery pack, lots of capacitance isn't really needed.
I would put a small electrolytic (about 1uf) on the output. Under really light loads (like hitting the fire button with an open atty or NO atty), the regulator might go into self oscillation and kill something inside (lots of stuff inside). Long shot, but could happen. | Thx for the detailed explanation. 99% absorbed, 90% understood and 100% appreciated.
The caps MV has (the only one) is a 10uf. The spec sheet for this regulator recommends a 10uf as min. So considering I already have some 10s.. Guess that is what I will use.
edit - Just reread you. Think there is enough difference between 1 and a 10 to warrant a stop by the shack? Don't mind at all if it will make any real difference.. Efficiency is muy bueno.
__________________ Drip that tip, to wet the wire. Now vape that juice, no need for fire Hypervaporation effect in effect
Last edited by wetwire; 11-03-2011 at 01:34 AM..
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11-03-2011, 06:20 AM
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#24 | | Couldnt take it anymore Join Date: Sep 2010 Location: Mod impersonation carries a stiff penalty YKWYA
Posts: 10,761
| Quote:
Originally Posted by wetwire
Note - Of the ones that were marked 470k all ohm'ed out at about 220k -350k. Checked about four of them. .
| thats how they recycle the garbage I guess...saves on dumpster fees..
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Last edited by berger; 11-03-2011 at 06:31 AM..
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11-03-2011, 07:11 AM
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#25 | | awarded title of Sir Arse Join Date: Apr 2009 Location: Louisiana
Posts: 6,660
| Quote:
Originally Posted by wetwire edit - Just reread you. Think there is enough difference between 1 and a 10 to warrant a stop by the shack? Don't mind at all if it will make any real difference.. Efficiency is muy bueno. | The 10uf is better. 1uf is about the minimum. 100uf isn't needed for e-cig application.
__________________
A good e-juice, fresh carto, and 3.7 volts from a REALLY REALLY BIG battery works for me. YMMV
Originally Posted by Rocketman
...Quasi was right...Once
...OK, Twice...Maybe | |
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