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12th January 2007, 18:20 #1
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step up dc voltage
My knowledge of electronics doesn't go as far as that, as increasing a given DC voltage. I would much appreciate a general explanation, one that I could use generally for different desired voltages.
Thanks much.
Bob Haskell

12th January 2007, 23:19 #2
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12v to 40v
If signal => design a level shifter
If power => dc to dc converter (boost)

12th January 2007, 23:19

13th January 2007, 00:10 #3
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how to up dc voltage
Use the LM2577ADJ adjustable stepup converter ..
Here is its data sheet:
http://www.rosehulman.edu/~herniter...ets/LM2577.pdf
Regards,
IanP

13th January 2007, 11:02 #4
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how to step up dc voltage
Dear:
you an use DC DC converter, not transformer as the dumpfrog answer you because if u apply DC vltage on transformer the output will be zero volt.
BR

13th January 2007, 16:16 #5
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lm2577 projects
The basic principle is converting the original DC into AC, then step this AC up to the desired value by a transformer, finally rectify it to get the necessary DC voltage.
One of the most important pros of this principle is we can use the AC with the frequency higher than the mains, upto hundreds thousand hertz, so we can use the smaller transformer, smaller filtering capacitors and inductors, thus get the smaller and lighter DCDC converters. In the other hand, we can stabilize the output voltage easily.
Depending the power you need, or how important your project is, so you can design by yourself the simple circuit with 2 transistors and a transformer, or use a 555 timer as astable multivibrator with the power amplifier on transistors, or design a more complicated DC boost converter, or use the dedicated ICs for this purpose such as popular MC34063 from ON semiconductor, or buy the readymade from any professional manufacturer as Delta, Deer, ... from China.
You will find out it is not as so complicated as you imagine at the beginning. Free and good document are everywhere on the internet and Google is our best friend.
Goodluck
nguyennam

13th January 2007, 19:08 #6
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step up dc voltage
Too difficult for U. I think that you should use LT1070HV.
Good luck for U !

14th January 2007, 07:02 #7
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14th January 2007, 07:02

14th January 2007, 18:33 #8
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12v to 40v
i hope tht is too easy to implement with 6v..
now u can use a no. of diodes in series to get a higher voltage
i hope it will help u otherwise u can mail me
jain.mayank@gmail.com
Added after 3 minutes:
otherwise one book is thr..tell me ur id...actually forgot the name...i will send u name of tht book ...actually i thought u want a regulator of 40 v
but tht book has the step ups in dc
mail me on my gmail id
i will reply back

15th January 2007, 04:54 #9
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simple voltage up converter
If your looking for a cheap way out and if your input is going to stay the same or go to 0v 2 transistors in a darlington hookup and a few resistors should do.Just do the math.

18th January 2007, 09:53 #10
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12v to 40v converter
How about using a voltage tripler..google it to get the circuit
BR
vabzter

19th January 2007, 03:51 #11
dc step up voltage
i agree with nguyennam ,basic fundamental of converter DCDC

19th January 2007, 07:07 #12
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dc dc stepup principles
Originally Posted by haskellbob
depending of this, the circuit topology will be completely different, also the output noise, etc.

19th January 2007, 08:02 #13
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dc voltage step up
Originally Posted by haskellbob
http://www.edaboard.com/viewtopic.ph...916&highlight=

19th January 2007, 10:14 #14
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dc voltage increasing circuit.*pdf
dear
here u can use lm1577 voltage step up regulator..
The LM1577/LM2577 are monolithic integrated circuits that provide all of the power and control functions for stepup (boost), flyback, and forward converter switching regulators. The device is available in three different output voltage versions: 12V, 15V, and adjustable

19th January 2007, 10:14

26th January 2007, 15:08 #15
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converter 12v to 40v
Some references on DCDC step up regulator.
http://www.siongboon.com/projects/20...dc_converter/
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