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Hey all!
I've used inductors with higher Isats and they worked!
So, I've been able to boost the 6v to about 63v!!
Well, now that I've got a power source between. 6 and 63v, I thought I'd use it to power my laptop.
My adpter says 19v. I clamped the output of the converter at 19. The power LED...
Thanks, guys!
Apparently, the circuit not quite efficient...still needs to be tweaked to get power for lower current used up.
BTW, how's the switching frequency calculated? Anyone knows?
Thanks.
I've observed from my use of the circuit ( which probably cannot be simulated), that the ouput voltage and current depend on the input current.
Some of the input current is what's converted to voltage. So, output voltage is limited by input current and other factors like the type of...
Hey guys,
I'm trying to design a dc-dc converter. I've successfully built one that is powered by a 1.5v cell, 9v gen. pupose cell and a 280mAH 9v cell.
The problem is when I try to power it with high capacity batteries like a lead acid 6v, 4AH cell, it doesn't work! The inductor heats up and...
Roger that. :)
So, Wikipedia's page on USB says 5A can be drawn.
https://en.wikipedia.org/wiki/Universal_Serial_Bus
It says, for charging specs only.
So, do you know how to configure a plug for such? I've tested a few... so 0.2, 0.5, others 1.5... and a surprising 3A burst draw!!
Clearly...
I'm not sure I know what you mean by over-unity efficiency.
Let explain what I'm trying to do:
I want to conduct an experiment: " "transforming" a dc power source"...
Say you have a DC source-- 5v/0.5, 5v/1.5A, a 9v/1A battery, 1.5v/1A battery etc....any DC source . How do you "transform"...
Ah, the experiment didn't work.
The voltage dropped down to 0.5 thereabout. Output current was 0.2A
My objective was to increase the current of the 5v at 0.5A source.
According to this link:
https://www.ehow.com/how_8780713_increase-amperage-capacitors-diodes.html
It says AC current can be...
I apologize for the confusion.
What I meant is I wanted to up convert 5v to 300v. I said I've been able to convert 5v to 50v using the transistors I named.
I was thinking of converting 5 to 300, then to 20 for the 20 at 5A.
So, my Q was: is there a better transistor/method to get 300?
- - -...
Ok.
I've got one more Q: say I got a power source of D.C. 5v at 0.5A . Please, how to I change it to AC?
I was thinking the 555 timer .....not sure it worked...maybe the chip was fried.
Are there any ICs or a circuits to convert the 5v D.C. to AC?
Thanks!
Thanks!
Well, I found a converter at Vicor that should be able to do the job. I could use that or try some of the ideas below.
One problem though, I have yet to achieve the 300v. I've been able to get about 50v from a 5v source using a 557 and TIP122 as switch....
I noticed that when I...
Thanks for you response!
So if I hook up the 300v at 0.4A to a buck converter, I should be able to get 20v at 5A?
Convening regulators, I thought their level of hysteresis is too high to be useful here? i.e instead of trading voltage for current, don't they wast it?
In sum, since you're...
Hey all,
Since power=IV, is it possible to reduce voltage to increase current ( well of course, power being constant)?
For example, a dc-dc converter has an output of about 300v at 0.4A, is it posible to reduce the 300v to get 20v at 5A?
If possible, how can this be achieved practically? Any...
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