# simply convert 12v dc to 300v

Discussion in 'General Electronics Chat' started by king40, Jan 2, 2014.

1. ### king40 Thread Starter Member

Jul 17, 2013
75
0
hi friends
we can convert 12v dc to 300v
if yes
how
and with WHICH CIRCUIT
THANKS ∞

Jul 18, 2013
10,813
2,491
May have to take 'Simply' out of the equation?
Max.

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3. ### Alec_t AAC Fanatic!

Sep 17, 2013
5,948
1,129
A DC-to-DC converter will do that, but 300V can KILL YOU !! This is not a project which should be attempted if you are inexperienced in electronics.

4. ### king40 Thread Starter Member

Jul 17, 2013
75
0
I have means of simply
my means of simply is simply 12v to 300v circuit

5. ### king40 Thread Starter Member

Jul 17, 2013
75
0
@Alec
you right
so please give me circuit for convert 12v to 70 or 75v

6. ### mcgyvr AAC Fanatic!

Oct 15, 2009
4,783
973
Why don't you explain what you are trying to do, what levels of current you require and why it all of a sudden went from 300 to 75 V?

So far I'd just tell you to go find it yourself.. (but "find it" would be replaced with another F word)

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7. ### shteii01 AAC Fanatic!

Feb 19, 2010
3,496
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Am I the only one who thinks we are dealing with Automotive project?

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8. ### Kermit2 AAC Fanatic!

Feb 5, 2010
3,838
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here ya go. the basic mechanical vibrator.

The power is connected to the normally open pins.(they are closed when the relay coil has no power). The power energizes the coil and the contacts move. This DE-energizes the relay and it releases, then the cycle repeats. This will be VERY hard on the relay and it will not last long. Specially designed vibrators that are more robust were built to perform this function for battery powered equipment which used vacuum tubes.

The output is sent into a dual winding secondary(or center tapped one) and the transformer steps up the square wave AC voltage. The output from the primary will be a high voltage AC waveform and must then be rectified and filtered to give a DC voltage. Those parts have not been drawn in.

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9. ### t06afre AAC Fanatic!

May 11, 2009
5,939
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The question is how much current do you need

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10. ### #12 Expert

Nov 30, 2010
16,655
7,293
True.

I can convert 12 volts to 300 volts by rubbing my feet on the carpet, but the amount of current is useless. The fact that you don't know that makes us wary that you might get hurt or killed.

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11. ### king40 Thread Starter Member

Jul 17, 2013
75
0
thanks of all
current not important
i have 12v battery with 1MA current
first i wants to convert 12 v to 300v
but with this post
i forget 300v
thanks of all engineering

12. ### t06afre AAC Fanatic!

May 11, 2009
5,939
1,222
YOU have to tell more about what you are trying to do, and your requirements. If not we are only wasting time trying to drag out you what you really want to do. This thread is on the second page. And still we have none idea about how to help you. If you even are not able to describe your problem in a proper manner, how in earth can you expect any help?

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13. ### Little Ghostman Member

Jan 1, 2014
294
97
Isnt 1 MA low for a battery? not sure I would want to mess with 75V DC unless I was sure what was what, I came close to a stupid cap accident the a few days ago, with 400V sitting on it! be vary careful.
To quote my dad, " that kind of voltage, makes your nads tingle in a very unpleasant way" not so sure I would want my nads tingling like that

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14. ### Alec_t AAC Fanatic!

Sep 17, 2013
5,948
1,129
Google 'boost converter'. There are umpteen schematics and explanations out there.

@ LG
I hope he's not speaking from experience in this instance .

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