tag:blogger.com,1999:blog-6847048658257278783.post7914137695142096615..comments2024-03-29T01:36:12.851+00:00Comments on Guitar FX Layouts: NE555 Voltage DoublerIvIarkhttp://www.blogger.com/profile/08416945174853142251noreply@blogger.comBlogger30125tag:blogger.com,1999:blog-6847048658257278783.post-45195697084468482622021-03-19T11:55:08.684+00:002021-03-19T11:55:08.684+00:00Cqn i use this instead of max1044Cqn i use this instead of max1044Zaraki1337https://www.blogger.com/profile/04815656896624384794noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-31759566373042895932018-06-04T19:20:03.738+01:002018-06-04T19:20:03.738+01:00I would like to resurrect this one a bit. I put t...I would like to resurrect this one a bit. I put this on a breadboard and love the results. No whine so far in my audio path. I also put two 1n caps in series and doubled the frequency. Should this be a problem? I'm also trying to keep the big electrolytic cap sizes down. I'm using a 100uf 25v for the main 9v supply. Can I lower the 220uf caps any? I figure I should run the 220u between 18v and ground at 35v, but can I lower it to 100u as well? The one off pin 3 is the cap being charged by the square wave out of the timer, correct? Can I lower that to 100u, too? I'm going to try modifying this to run closer to 27v. I see a schematic that multiplies the supply to approximate 3 times the original voltage. It uses much smaller electrolytics (10uf), but I assume the aren't considering audio power supply applications.<br /><br />Thoughts?Benhttps://www.blogger.com/profile/02644344177589539278noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-91079295252008641272017-04-10T19:12:58.665+01:002017-04-10T19:12:58.665+01:00I added a 1M pot on the end, lugs 2/3 linked for t...I added a 1M pot on the end, lugs 2/3 linked for the input, with lug 1 being the output. Got my 18 variable down to 9, you could use 2 meg pot to take it down to about 4-5v. Anonymoushttps://www.blogger.com/profile/12634318960454475371noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-37816297953639826732016-01-20T13:26:24.798+00:002016-01-20T13:26:24.798+00:00Hey All
Not to dig up an old layout but does anyo...Hey All<br /><br />Not to dig up an old layout but does anyone know where the original schematic for this is? I have searched anywhere I can think of (incl. other forums) and checked google images and cannot seem to find an exact match. I have found similar but not one with these parts values. Might be a stretch I know. It appears to be the one Miro posted a while back with different values... is this correct? :)<br /><br />http://www.eleccircuit.com/wp-content/uploads/2010/05/doubler-voltage-12vdc-to-24vdc-with-ne555.jpgchumbox https://www.blogger.com/profile/08378022143034035602noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-53322149573773866112015-04-15T17:25:01.971+01:002015-04-15T17:25:01.971+01:00http://www.eleccircuit.com/wp-content/uploads/2010...http://www.eleccircuit.com/wp-content/uploads/2010/05/doubler-voltage-12vdc-to-24vdc-with-ne555.jpggiudishttps://www.blogger.com/profile/03947795301633910036noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-39535394976433018242015-02-26T15:24:13.478+00:002015-02-26T15:24:13.478+00:00What an amazing and useful site. IvIark deserves a...What an amazing and useful site. IvIark deserves a tech Grammy.<br /><br />QUESTION ABOUT HIGH-PITCHED WHINE.<br /><br />I have built three of these voltage doublers. Two were fine; the third one is doing that high-pitched-whine thing. Only happens when I switch to 18v - I have the doubler on a DPDT. Everything about the build, and the pedal it's in, is essentially the same as the last two. I've tried: replacing the 555; going over all soldering, channels, etc; adding decoupling cap and resistor at the positive input, moving the whole unit around.... nothing changes it. The incoming power supply is a One-Spot, and I've used two other adapters, not daisy-chained. The voltage out is correct -- around 17v or a bit higher. Used 1N4001 diodes.<br /><br />Is there any other possible fix or should I toss it into the Box Of Inexplicable Weirdness?DasWafflestomperhttps://www.blogger.com/profile/04896223697597006056noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-63194882125675761142014-11-13T21:19:35.366+00:002014-11-13T21:19:35.366+00:00I'd like to power a pedal to 18 volts maximum ...I'd like to power a pedal to 18 volts maximum (an univibe); is this charge pump ok for this? I've red that arrives to 24 volts....can I get down this value in any way?<br />thanks friends! :)giudishttps://www.blogger.com/profile/03947795301633910036noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-19409789868400214952014-10-03T21:15:05.983+01:002014-10-03T21:15:05.983+01:00This might be a silly question but... Is it possib...This might be a silly question but... Is it possible to incorporate a sag pot on this? I'm looking for something similar to Beavis Audio's Devolt (or whatever it's called), but I'd love to be able to start at 18v for a couple pedals. I can definitely just add the sag after this circuit, but I was wondering if one of the resistors could just be replaced with a pot to keep the size down as I might have a few of these on my board. Thanks! Jessehttps://www.blogger.com/profile/08001234922510150211noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-12558042708019837162014-08-05T19:58:39.783+01:002014-08-05T19:58:39.783+01:00Does anyone have the Schematic? I do like!Does anyone have the Schematic? I do like!Anonymoushttps://www.blogger.com/profile/14315249104935107335noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-38032912006185357392014-03-06T20:51:15.605+00:002014-03-06T20:51:15.605+00:00sorry - actually meant that comment directed to st...sorry - actually meant that comment directed to strat...tinkercreakhttps://www.blogger.com/profile/13582923070173204110noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-10957340192741442262014-03-06T15:53:18.346+00:002014-03-06T15:53:18.346+00:00mike
This is gonna sound dumb, but on my first ch...mike<br /><br />This is gonna sound dumb, but on my first charge pump build, I was only getting 9v on the out. Turns out I didn't have the ground connected while testing. When I grounded it properly, out came the 18v. Just throwing that out just in case....tinkercreakhttps://www.blogger.com/profile/13582923070173204110noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-63140504217715237262014-03-06T05:53:48.127+00:002014-03-06T05:53:48.127+00:00I've built this pump succesfully, getting up t...I've built this pump succesfully, getting up to 24 volts out of the output....the layout is def verified...id check usuals, capacitors, resistors, polarity of caps and in/out plugs, track cuts/bridges.....if you can host pics of your build ill take a look and see if anything looks out of the normal....hope it works out for you<br /><br /><br />-Adammikehttps://www.blogger.com/profile/10994591355956077860noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-58926404685105653952014-02-06T01:51:06.699+00:002014-02-06T01:51:06.699+00:00i have checked the board many times and cant find ...i have checked the board many times and cant find anything wrong with it even went between the cooper strips with a knife to make sure there is no connection between any of them.i have build many pedals and i don't get why this one is not working<br />tnx anywayAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-83076548088171379232014-02-05T21:11:19.212+00:002014-02-05T21:11:19.212+00:00Check your layout and wire connections. The 9v ra...Check your layout and wire connections. The 9v rail is right next to the 18V rail, so be sure you grabbed the right rail. Mojo321https://www.blogger.com/profile/09952527923804212583noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-48023503178195627032014-02-05T06:22:42.642+00:002014-02-05T06:22:42.642+00:00Hi everyone
i have build this charge pump twice an...Hi everyone<br />i have build this charge pump twice and it dose not worked and it just puts out 9v<br />Any ideas <br />tnxAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-35723769869085182382013-12-20T21:27:17.589+00:002013-12-20T21:27:17.589+00:00Would this pump fit into a altoids tin or somethin...Would this pump fit into a altoids tin or something of similar size with 2x 2.1mm jacks?<br /><br />I'd love to stick this into something crazy small to velcro it to the under side of one of my pedal board rails.Eric Evanshttps://www.blogger.com/profile/17898798930245655417noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-1648082214021274792013-11-05T20:07:42.707+00:002013-11-05T20:07:42.707+00:00Hello,
is there a compact way to apply a voltage d...Hello,<br />is there a compact way to apply a voltage doubler and an inverter to get +/- 18V (for an EHX equalizer) from a +9V power supply? thank you!Anonymoushttps://www.blogger.com/profile/07282065124952896310noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-62563972887522649842013-07-18T07:25:46.092+01:002013-07-18T07:25:46.092+01:00Cheers Adam! I'll tag it.
+mCheers Adam! I'll tag it.<br />+mmirosolhttps://www.blogger.com/profile/02400327798106357876noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-17990074506789760372013-07-18T00:47:31.647+01:002013-07-18T00:47:31.647+01:00Verified. w/ a 9v power supply reading at 10.4v I ...Verified. w/ a 9v power supply reading at 10.4v I ended up with 20.5v at the output. Very low noise also... I ran out of DC jacks and had to wire the output directly into an OCD clone to test out in circuit but I don't see it having any affect on noise going through the jack to jack route. I recommend this one to the ICL7660 pumps as its the same quality at a fraction of the cost.....I got my NE555 stock for $0.14 a piece.Anonymoushttps://www.blogger.com/profile/16091742885400860075noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-10065049736493176192013-06-02T07:14:23.640+01:002013-06-02T07:14:23.640+01:00Not that i know...
+mNot that i know...<br />+mmirosolhttps://www.blogger.com/profile/02400327798106357876noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-71062094245160988082013-06-02T06:11:19.646+01:002013-06-02T06:11:19.646+01:00Has anyone verified this?Has anyone verified this?jokersmile32https://www.blogger.com/profile/13104502606245678696noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-75062774414591275142013-05-21T07:18:49.483+01:002013-05-21T07:18:49.483+01:00would this work with 12V to give out 24v? how many...would this work with 12V to give out 24v? how many mA?<br /><br />thanks HGE Contraptionshttps://www.blogger.com/profile/13124050879741157587noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-64142903832074625342013-05-11T06:47:45.633+01:002013-05-11T06:47:45.633+01:00Can i use this doubler with a 9v battery or only w...Can i use this doubler with a 9v battery or only with a power supply ?Alltrax74https://www.blogger.com/profile/13079701857494829507noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-29645370832553339772013-03-28T18:14:44.877+00:002013-03-28T18:14:44.877+00:00I have no idea if that would work. Sorry..
+mI have no idea if that would work. Sorry..<br />+mmirosolhttps://www.blogger.com/profile/02400327798106357876noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-69766386333235503302013-03-28T17:26:50.274+00:002013-03-28T17:26:50.274+00:00I'm building a delay that requires ~35mA at 18...I'm building a delay that requires ~35mA at 18v. Could two of these be put in parallel if higher current is required?Anonymoushttps://www.blogger.com/profile/05381517076300177186noreply@blogger.com