Ego boooster!!!
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Yes.. it's the new Tesla eGo Booster. Who needs 4 volts when you can have 4.21 Gigawatts! Vapes so hard- you go back in time!
The edit comment was a rhetorical suggested edit - with the result not in anyway meant to be attributed to you. You are correct on the 22.4% times 22.4% but 1.224 times 1.224 is roughly 1.5. Or, a 50% increase above original. I tend to agree on the booster pulsing. In fact, it can possibly be seen to a degree on the scope at the peaks and valleys in that there seems to be evidence of some higher frequency pulsing at these extreme values. (Perhaps not quite perfect filtering?) But, eGo booster is back in stock. Even though I feel confident that a 50% power boost will cause a 33% (or greater) reduction in battery use time between charges, I ordered one anyway. (More precisely on use time: If 33% time reduction then I get 67% of old time. New time (67%) times new power (150%) equals ~100%. However, the higher discharge rates I think tends to make actual batt performance less than mAh ratings so getting back to 100% may not occur.) Perhaps of interest - note figure 3 in the Wikipedia booster article. Note that current is not constant (as your calculations using Iold and Inew imply) even though voltage out is constant over a duty cycle. Again - ordered one and I guess I'll find out on the time issue.
I know all meant in jest. However, what you mention is somewhat similar to what occurred to me. That is, an eGo outputs a pulsed current. (Therefore, no oscillator is needed.) One should be able to boost the voltage of the eGo with a simple transformer. It has been mentioned here that frequency of the eGo pulse is in range of 100 hz. Don't know electricity well enough to know if 100 hz implies large and heavy transformer or not. But perhaps an even smaller sized device than the eGo booster is possible as an eGo add-on if device was simple a small transformer?
Wait, are you saying you could build a mini-tesla coil to screw on to the ego battery? That would be hot, I'd buy it 
Hmm.. I'd have to do (relearn) some math but it is never that simple. Inductive reactance (Such as an electrical field collapsing upon another conductor- usually a coil) is the principle used in transformers. You can use pulsed or alternating current with a transformer- with different results. It's been about 25 years since I've worked with any of the math or practical applications so my expertise is dubious on this subject.
There was a time when I could answer your question quite well. These days I'm not qualified other than to speak in generalities.
Chaos - Wonder if you can provide some insight relating to this video: Artisan's Workshop - Ego Booster.m4v - YouTube and perhaps show me the errors of my ways. Here goes:
The video shows the volt meter reading 3.45 volts in an unloaded condition for the eGo bare. If I assume the the maximum of the pulse that generated this meter reading to be 4.2 volts (typical just off charger for Li-ion) then the indicted duty cycle is 0.821 (i.e. 3.45/4.2). Now the volt meter reading, unloaded, for the eGo with the Booster with Booster dialed at top was 4.7 volts. This would seem to imply that the peak voltage in this PWM case is 5.725 volts (i.e. 4.7/0.821). Then let's go to oscilloscope and load. Then eGo with no Booster shows a pulse max of 3.91 volts (this is not what Jill said but seems to be what scope read - she said 3.7). If I assume same duty cycle as the unloaded case then this peak PWM wave should produce 3.22 volts on a rms volt meter (i.e. 3.92 times 0.821). I am further inclined to believe this result as 3.23 is what I measured on my Fluke 11 multimeter for an eGo just off the charger loaded at 2.5 ohms. And also, the 3.45 volts that Jill measured for the eGo unloaded is almost identical to what I measured for the eGo unloaded. Now consider the eGo with load and Booster with Booster at max. The peak pulse in this latter case was 4.72 volts. (So scope read out said). If I assume the duty cycle is the same 0.821 that brought me to the 3.22 number without booster, then that 4.72 peak translates to an rms reading of 3.875 (i.e. 4.72 times 0.821). So now I have an inferred rms reading of 3.22 without the booster and a 3.875 with booster dialed high. Now if I made the comparison of "new power" to "old power" I get 3.875^2/R compared to 3.22^2/R. Making a ratio of the two and cancelling out the R, I get (3.875/3.22)^2 or 1.203^2 or 1.448. And, in other words, eGo Booster can possibly get me a 44.8% increase in power relative to the eGo without a Booster. (I would still suggest that that 44.8% increase would come with at least a 30.9% reduction in batt cycle use time - but not relevant at moment.)
If my numbers above are right, a 44.8% boost is a very good boost for my tastes as it gets very close to what occurs with a Riva - just off the charger. The Riva just off the charger is at 4.2 volts - unloaded. Loaded at 2.5 ohms it is 3.81 volts. 3.81 volts at 2.5 ohms is 5.8 watts. A 44.8% boost over an ordinary eGo loaded at 2.5 ohms is 6 watts. If all vapers are like me (highly unlikely), they will love 6 watts.
So now that I find I might very well have interest in this Booster I also find out that Canada Post apparent is still using ponies to deliver its mail. Two weeks! Hopefully someone squared when they should have taken the square root.
The video shows the volt meter reading 3.45 volts in an unloaded condition for the eGo bare. If I assume the the maximum of the pulse that generated this meter reading to be 4.2 volts (typical just off charger for Li-ion) then the indicted duty cycle is 0.821 (i.e. 3.45/4.2). Now the volt meter reading, unloaded, for the eGo with the Booster with Booster dialed at top was 4.7 volts. This would seem to imply that the peak voltage in this PWM case is 5.725 volts (i.e. 4.7/0.821). Then let's go to oscilloscope and load. Then eGo with no Booster shows a pulse max of 3.91 volts (this is not what Jill said but seems to be what scope read - she said 3.7). If I assume same duty cycle as the unloaded case then this peak PWM wave should produce 3.22 volts on a rms volt meter (i.e. 3.92 times 0.821). I am further inclined to believe this result as 3.23 is what I measured on my Fluke 11 multimeter for an eGo just off the charger loaded at 2.5 ohms. And also, the 3.45 volts that Jill measured for the eGo unloaded is almost identical to what I measured for the eGo unloaded. Now consider the eGo with load and Booster with Booster at max. The peak pulse in this latter case was 4.72 volts. (So scope read out said). If I assume the duty cycle is the same 0.821 that brought me to the 3.22 number without booster, then that 4.72 peak translates to an rms reading of 3.875 (i.e. 4.72 times 0.821). So now I have an inferred rms reading of 3.22 without the booster and a 3.875 with booster dialed high. Now if I made the comparison of "new power" to "old power" I get 3.875^2/R compared to 3.22^2/R. Making a ratio of the two and cancelling out the R, I get (3.875/3.22)^2 or 1.203^2 or 1.448. And, in other words, eGo Booster can possibly get me a 44.8% increase in power relative to the eGo without a Booster. (I would still suggest that that 44.8% increase would come with at least a 30.9% reduction in batt cycle use time - but not relevant at moment.)
If my numbers above are right, a 44.8% boost is a very good boost for my tastes as it gets very close to what occurs with a Riva - just off the charger. The Riva just off the charger is at 4.2 volts - unloaded. Loaded at 2.5 ohms it is 3.81 volts. 3.81 volts at 2.5 ohms is 5.8 watts. A 44.8% boost over an ordinary eGo loaded at 2.5 ohms is 6 watts. If all vapers are like me (highly unlikely), they will love 6 watts.
So now that I find I might very well have interest in this Booster I also find out that Canada Post apparent is still using ponies to deliver its mail. Two weeks! Hopefully someone squared when they should have taken the square root.
JW50,
Remember one thing with all the voltage measurements: When the voltmeter is measuring a voltage that is pulsed, the value it displays is not at all obvious (i.e. multiplying the duty cycle by the voltage is not necessarily going to give you the displayed number). This is because you are measuring a pulsed (what could be construed as an AC) signal with a DC voltmeter. When the signal going into the voltmeter is not DC, what value does it display? It's really anybody's guess, and its going to vary from Voltmeter to Voltmeter depending on how a particular instrument makes the measurement.
When the signal is pulsed, the only valid absolute measurement is with an oscilloscope. You can get relative measurements with a voltmeter (since it applies whatever correction factor on the signal the same on each signal), however the absolute vaules do not mean that much.
So I think, saying the power increases by 44.5% percent (or 50%, or whatever) is a valid statement, however absolute measurements (saying the output voltage is 3.4V or whatever) are not. Same with current and everything else. Proportions (i.e. relative values) will give you something accurate, however absolute measurements are pretty dubious.
As far as comparing a Boosted eGo to a Riva, I really cannot say. I haven't seen anyone do a side-by-side comparison. One thing for sure, though, the Boosted eGo will stay at the same voltage from first vape to the last, whereas the Riva will get weaker as the battery discharges.
Good to hear that you are ordering an EB! Definitely make a comparison of battery life with the EB and without. I'm certain you will see that my calculations of 25% or less reduction in battery life (remember, this is at the maximum setting) are quite accurate. This has been confirmed by pretty much everyone who has used the device.
Remember one thing with all the voltage measurements: When the voltmeter is measuring a voltage that is pulsed, the value it displays is not at all obvious (i.e. multiplying the duty cycle by the voltage is not necessarily going to give you the displayed number). This is because you are measuring a pulsed (what could be construed as an AC) signal with a DC voltmeter. When the signal going into the voltmeter is not DC, what value does it display? It's really anybody's guess, and its going to vary from Voltmeter to Voltmeter depending on how a particular instrument makes the measurement.
When the signal is pulsed, the only valid absolute measurement is with an oscilloscope. You can get relative measurements with a voltmeter (since it applies whatever correction factor on the signal the same on each signal), however the absolute vaules do not mean that much.
So I think, saying the power increases by 44.5% percent (or 50%, or whatever) is a valid statement, however absolute measurements (saying the output voltage is 3.4V or whatever) are not. Same with current and everything else. Proportions (i.e. relative values) will give you something accurate, however absolute measurements are pretty dubious.
As far as comparing a Boosted eGo to a Riva, I really cannot say. I haven't seen anyone do a side-by-side comparison. One thing for sure, though, the Boosted eGo will stay at the same voltage from first vape to the last, whereas the Riva will get weaker as the battery discharges.
Good to hear that you are ordering an EB! Definitely make a comparison of battery life with the EB and without. I'm certain you will see that my calculations of 25% or less reduction in battery life (remember, this is at the maximum setting) are quite accurate. This has been confirmed by pretty much everyone who has used the device.
Relative to the video, it would have been interesting to have seen the scope view of the outputs without load together with the volt meter readings. That would have given indication of how that volt meter was handling the pulsed signal. It is my understanding that on higher end volt meters that rms (root mean squared I think) values are displayed. rms would be the average if all values are positive (I think). Then given:
why did one bother with testing the unloaded state in the video with a voltmeter?
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Order placed at 9:14 AM on 8/17/11. Delivered around, + or -, 9:14 AM 8/23/11. More comments later but first use - it does seem to boost. IMO, pleasingly so. Some of boost not to my liking but that issue is matter of personal taste. But, I am thinking the real maximum boost is on the order of 25% as compared to eGo without. More comments later. Also awaiting delivery of the 3VV eGo for compare purposes.
PS - Very good service and nice people at HappyVaper.
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Hi everyone, I am still very new to vaping and enjoying it immensley! But I must say that all this talk about voltages has me really puzzled. What are the advantages of different voltages and what exactly do they do?
Really, the whole point of increasing (or decreasing) the voltage of the battery is to increase (or decrease) the power going into the atomizer. The atomizer is just a heater, so as we know from heaters, the more powerthat's dissipated (measured in Watts), the hotter they get. The hotter the atomizer (heater) the more vaper it produces.
The point of having variable voltage is to adjust the amount of power the atomizer dissipates. This allows a user to adjust the amount of vaper (and throat hit, heat, etc.) that is produced by his e-cigarette. Since different atomizers and different juices are optimal at different power settings (and user's tastes), voltage adjustment gives a vaper more control over the vaping experience.
Not everyone feels they need the fliexibility that variable voltage provides (it adds another level of complication to a system that some people find is already too complicated) but nearly everyone I've seen that goes from a fixed voltage to a variable voltage device never goes back. Its like getting used to 3 tee vee channels, then getting cable and discovering you have 100. Not many people would choose to go back to three channels after that.
The point of having variable voltage is to adjust the amount of power the atomizer dissipates. This allows a user to adjust the amount of vaper (and throat hit, heat, etc.) that is produced by his e-cigarette. Since different atomizers and different juices are optimal at different power settings (and user's tastes), voltage adjustment gives a vaper more control over the vaping experience.
Not everyone feels they need the fliexibility that variable voltage provides (it adds another level of complication to a system that some people find is already too complicated) but nearly everyone I've seen that goes from a fixed voltage to a variable voltage device never goes back. Its like getting used to 3 tee vee channels, then getting cable and discovering you have 100. Not many people would choose to go back to three channels after that.
So now, makes you wonder if they'll make an automatic battery that works like a cigarette. On a cigarette, if you draw harder and faster, it burned hotter. So like, have a VV battery that ups the voltage the harder and faster you draw on it, and drops back down when you quit drawing on it. That'd be awesomeness
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