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the input voltage can be between 0.3 and 5.5V, higher or lower than the output. thats a feature of the TPS chip and it doesn't require a high side amp for current measuring. of course you would need to be careful with input and output currents and beware that at a lower input voltage, higher...

cool. tell us how it goes. have you got all the parts for it? I have sorta decided that selling TPS circuits with the high side amp is pointless. for a few reasons; the lavadrive already exists. the TPS has a max switch current of 1.5A, this means that it will struggle to power a DVD burner...

it sounds like you almost have it if its filling with hatched. there are two buttons at the top when you use the polygon tool, one is a hatched polygon, the other is a solid polygon. just click the solid one before you use it

just put some lm317 circuits in parallel (if you have some lm317's lying around)

yours looks pretty much the same, but with an extra resistor and pot. did you use the square tool in that last layout to make diagonal traces? not the way to do it ;) try using the polygon tool. to make it fill in you have to link the polygon to another signal by changing the same to make it match.

to make more copper area, i just go over the traces using the copper area tool, which draws rectangles. you will want as much copper area connected to the ground of the TPS, as its heatsink. to make the traces bigger, when you click the trace tool, at the top there is a drop down box with...

Re: DIY Charger: 14 Batteries at once! (Now with p lol ;D the sad thing is, people don't realize the entire video is a joke this comment hits the nail on the head "Just reading the ridiculous comments makes me laugh too - not only did you create a funny show, you proved that 90% of people on...

ok running a normal inkjet on wax doesn't work  :P lol i spent ages making a heater to melt the wax and heat up the print heads to 70C only to find that the thermal jets don't work with liquid wax maybe piezo electric jets would work, but i don't think its worth it... i will stick with toner...

Re: DIY Charger: 14 Batteries at once! (Now with p its fully charged when the current drops below 5% of the original charge current it might be 1%. thats just to stop them trickle charging, which can damage the batteries.

it actually melts the ink then prints it on a drum, then sticks it to hot paper. I suppose it uses inkjets to put the wax on the drum... i wonder if a inkjet could be modified with a small heater coil to print hot wax... I have so many inkjets lying around i might as well try it

normal inkjet printers print with water based ink. so it will be useless for etching if you want a method that is less problematic than the direct toner transfer, try photographic resist PCB's. the only downside is cost of the boards and extra chemicals for developing

Re: GB PHR-803T HD-DVD SLEDS [#2] LINK UP BUY NOW! ahh i just checked this thread. :o just paid for 2.

the instructable uses a wax printer of some sort... laser printers work by charging the paper to make the toner stick to it, then run it through a fuser to melt the toner to the paper. The thing is, with copper because its a good conductor, i don't think it will charge properly, so i doubt you...

I am sure i have already said this, but rip them off old electronic boards. cd/dvd drives are a good source.

something like this should work. using a n-channel FET. basically the 500K resistor charges up the cap, as it charges the voltage gets larger. a FET is a voltage controlled transistor so as the voltage on its input grows it starts to turn on, allowing current to flow. generally when the input...

you could use an RC circuit connected to the base of a transistor to slowly turn the voltage up. attach a linear driver to that and it would work it would only require a cap, resistor and a power transistor.

Re:  307200000000 V DC ! sound fun? if you want a high voltage transformer, pull one out of a old CRT monitor or TV. you can make a simple driver to make it work off 12V http://tacashi.tripod.com/elctrncs/555sstc/555sstc.htm

depending on what currents we are talking about, i think you would need a much larger cap for any visible fading effect. try it out and see.

why didn't i think of this before, a surefire way to print the right scale PDF!

well you could put a huge capacitor across the LD. at first it would take all the current from the LD, then as it charges, more current would go to the LD until its charged. that would require a pretty big cap though. otherwise i can't think of a simple way without interfering with the actual...