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Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
while looking at the output i saw a rogue bare wire possibly touching something it shouldn't. that may have been it. i will set it back up and see if there are any spikes
thank you, but i don't know what to replace. i'm not sure what would make the amps jump off the scale and nothing looks damaged. i did run it for over an hour and there is no fan on this supply and it did get very hot. a student could have done something screwy with it(when i got it the banana...
the voltage applied to it is less than it's supplying. it mentions charging a battery in the manual, so i would think this would be the same deal. i got this from my electronics professor, so it has probably been abused by ignorant students.the only thing with a heat sink is 2 3055 and i happen...
while testing my capacitor bank with my psu i noticed a few problems and i don't know if it can be fixed, or if i need to just shell out the +$100 for a new one. its an old bk precision 1630. i was testing one of the capacitors by setting it at 2v 1amp and logging the time it took to charge and...
can u determine when a nimh battery is full by checking the voltage? (i dont know how to check it by sensing heat) i had some trouble with this before when making a simple portable usb charger out of 4 nimh aa because most of the battery sets i tested got ~5.5-6.2v after charging from a supposed...
i have a flashlight charger and i get about 4.5v @ 50ma and i want to know if i could use that to use it as a cell charger or aa charger when im watching tv or whatever, but if the life of a battery is based only on the number of cycles it goes through and if charging it a little, waiting then...
the input voltage for this (3.5 to 72) is fine for me, i dont need exactly 2 -12v, just somewhere around there (im probably not going to use 30v much less 72, but they only have 9 step up/step down converters, and that's the one with the specs closest to what i want)
i want the output voltage...
MAX5093 so far looks nice, but the max output is only 250 ma, and although it says the voltage output can be changed with a resistor, i couldn't find a schematic that had a pot in it. could u use a transistor somewhere to increase the max current out?
does anyone have a design for a dc to dc converter that has an input voltage of about 2-12v and has an output voltage that would change just by turning a pot. what im looking for is like the anyvolt, but it has a 500ma limit and cost $25 i looked at a lot of chips and they dont cost a lot, and...
i get most of my components from old junk and i have a lot of crystals, but i couldn't find any datasheets for any of them :( i have a multimeter with a frequency setting, can i use that to test it and if so, how? also is there any way of finding out what voltage or current i should or can use?
IT WORKS!!!!
i tried the 4013 circuit and used relays instead of just touching wires and it worked! also i had no idea that touching wires had a lot of debouncing, thanks for the tip and thank you everyone for your help, but i do have one more question, in that diagram, is pin 2 floating? i...
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