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I'm curious what the cap between out and ground is for?
Also, will this regulator fit inside a 3xAAA box down the center column? Nevermind. Just saw Ez Duzit's post.
UD.
UD.
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Hey Ez what ohms is the atty you are using? What kind of loaded voltage are you getting with MV's regulator? There's a big discussion going on about how MadVapes 5V regulator cuts off when using low ohm (Joye 510 I presume, the only ones I use) atties. I wanted to build one but now I'm wondering.Been wanting to put together a 5volt 3x AAA box using a micro-switch, but didn't want the hassle of trying to stuff a mosfet, along with the 5v regulator into that tiny space. I've tried about 7 or 8 different styles of switches, but it's a royal pain in the .... trying to find a small switch that actually looks good when mounted, and can handle the current from a 5 volt setup...
But I finally got a few Madvapes 5v regulators with a control pin, and BAM. No more oversize switch problems. Put together a nice little 5v box using the tiny tactile switch he carries, and this thing is a joy to use. The schematic for the circuit is posted in the description of the regulator, and works perfectly. Can use any teeny tiny switch I want now, since I don't have to worry about current frying the switch. And I get about 5 hours, of 5 volt vaping using two 10440 batteries.
You should head over and share your expertise.
http://www.e-cigarette-forum.com/forum/battery-mods/68102-question-problem-5v-regulator.html
I use a ModernVapor 902 atty which is about 3 ohms, (and a much better vape at 5v then a 510). But I've also used a Joy 510 atty, (2.4 ohms), with no problems. And that is using two protected 10440's to power the regulator. I will continue to use the regulators from Madvapes. They're made by Fairchild Semiconductor and are good quality with great specs. I doubt they're the problem. Most likely, the batteries are the cause. The problem is the exception, not the norm. So you can use those regulators, and not worry to much about it.
As for the output under load, all the boxes I've built using the Madvapes regulator, are a rock solid 4.98 -4.99 volts, with either the Modernvapor 902, or the 510 atty attached. (As a side note, they're the same voltage with no load).
question for all you electro-heads.
i've built a few 5v, but this is my first one where i'm wanting to use 2 leds.
so, using this diagram, where do leds/resistors get plopped in? i've blown 3 already in guessing
excuse my crudeness in the diagram ...
i've built a few 5v, but this is my first one where i'm wanting to use 2 leds.
so, using this diagram, where do leds/resistors get plopped in? i've blown 3 already in guessing
excuse my crudeness in the diagram ...
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If the reg pins were 1 to 4 left to right as in your picture, you'd go from pin 3 to one side of a 470 ohm resistor to the positive leg then the negative leg of the led goes to pin 2 . The wire from pin 3 to the atty would stay just as is..
hoog
hoog
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using your numbering, pin 1 is the control which i don't use cause my switches can handle the current.
but i go from pin3 to pin3? that doesn't sound right to me (of course, what do i know?).
but i go from pin3 to pin3? that doesn't sound right to me (of course, what do i know?).
Looks good so far deitra. And no, a little messy soldier won't hurt anything, as long as it doesn't short something out. So on the pcb you were holding in your picture, as long as the soldier in Row 1 isn't touching anything in row 2, and the soldier from row 2 isn't touching anything from the rows on either side of it, and so on....
As for the LED, I didn't use one in the box from the tutorial. But if you want to include one in yours, here's how it would look added to hoogie's original circuit.
The placement would also depend on what function you want each LED to signify.question for all you electro-heads.
i've built a few 5v, but this is my first one where i'm wanting to use 2 leds.
so, using this diagram, where do leds/resistors get plopped in? i've blown 3 already in guessing
excuse my crudeness in the diagram ...
How do you determine which one to go with, 1.5A or 3A?
Also, when an LED is wired up, how much power does that take away from the 5V (if any)?
Also, when an LED is wired up, how much power does that take away from the 5V (if any)?
LED doesn't take anything, they run on practically nothing. this is the first time i've used LEDs, and still getting a constant 5.1v to the batt. i couldn't tell you about the amps though, the ones i got don't say what they are (not madvapes).
Most stock atty's will draw more than 1.5 amps @ 5v. So go with the 3 amp regulator.
And joker was right about the led's, they don't take much power at all.
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is there anyway i can check out to see if my regulator is fried? think i did everything properly but still got like 8+ volts...
how do you guys solder onto that tiny ground...
how do you guys solder onto that tiny ground...
If you have a multimeter read continuity through it and to the control pin. For soldering I like to make a J hook on the wire end (looks like a J) and just make contact at the bottom of the J to the pin. Solder enough to make a 50% fill on the sides of the J and it should work great. That way I dont have to try to wrap the pin or do anything funky and no mechanical stress on the solder joint. Good luck!
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