looking for simple voltage doubler

sss · 14th February 2011, 11:04 PM

to double 12V to approx 24V .18V is also ok , so no need for regulation and very low current will be good also.
i'm looking to do that with low parts count and cant find any ic that will do this simple task.
most charge pump ic's does not include the diodes for voltage doubler , and they work only for low voltage (around 3-6V)

any ideas?
thanks guys .

wakibaki · 14th February 2011, 11:23 PM

MAX1044 will double or triple 9V. 10V max, so you will need to regulate down.

w

jcx · 15th February 2011, 02:22 AM

the ICL7660 works from 12 V, needs diodes for positive doubling

jfitz57 · 15th February 2011, 03:39 AM

LM386, couple 1N4148's, resistors and capacitors... RadioShack stuff...

sss · 15th February 2011, 12:48 PM

i was hoping that there is some ic that includes the diodes and all i need is external caps.
anyway ,i guess that 555timer is the cheapest solution and almost the same parts count.

jcx · 15th February 2011, 02:45 PM

really low current - a few 10 uA can be had from SS relay mosfet gate driver PV diode stack optoisolators - insanely low efficiency too

14th February 2011, 11:04 PM	#1
sss diyAudio Member Join Date: Jul 2003 Location: Israel , haifa	looking for simple voltage doubler to double 12V to approx 24V .18V is also ok , so no need for regulation and very low current will be good also. i'm looking to do that with low parts count and cant find any ic that will do this simple task. most charge pump ic's does not include the diodes for voltage doubler , and they work only for low voltage (around 3-6V) any ideas? thanks guys . __________________ if you are not living on the edge you are taking too much space

15th February 2011, 12:48 PM	#5
sss diyAudio Member Join Date: Jul 2003 Location: Israel , haifa	i was hoping that there is some ic that includes the diodes and all i need is external caps. anyway ,i guess that 555timer is the cheapest solution and almost the same parts count. __________________ if you are not living on the edge you are taking too much space

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14th February 2011, 11:23 PM	#2
wakibaki Banned Join Date: Jan 2008 Blog Entries: 2	MAX1044 will double or triple 9V. 10V max, so you will need to regulate down. w

15th February 2011, 02:22 AM	#3
jcx diyAudio Member Join Date: Feb 2003 Location: ..	the ICL7660 works from 12 V, needs diodes for positive doubling

15th February 2011, 03:39 AM	#4
jfitz57 diyAudio Member Join Date: Mar 2010 Location: Western Massachusetts U.S.A.	LM386, couple 1N4148's, resistors and capacitors... RadioShack stuff...

15th February 2011, 02:45 PM	#6
jcx diyAudio Member Join Date: Feb 2003 Location: ..	really low current - a few 10 uA can be had from SS relay mosfet gate driver PV diode stack optoisolators - insanely low efficiency too

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