tag:blogger.com,1999:blog-6847048658257278783.post2396268633470205015..comments2024-03-29T01:36:12.851+00:00Comments on Guitar FX Layouts: Switchable Onboard Power +9/+18VIvIarkhttp://www.blogger.com/profile/08416945174853142251noreply@blogger.comBlogger78125tag:blogger.com,1999:blog-6847048658257278783.post-12576285898387287822023-10-16T02:21:43.620+01:002023-10-16T02:21:43.620+01:00Hey Bakerj, thanks for reaching out. I miss this c...Hey Bakerj, thanks for reaching out. I miss this community. <br />I'm sorry to say though, I dont recall what I ended up with but I think I ditched the NE555 versions.<br />I'll get back to you if I can find what I did and/or the layout used. MAOhttps://www.blogger.com/profile/11710844420932336422noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-78825758674514927262023-10-15T19:56:23.831+01:002023-10-15T19:56:23.831+01:00Hey MAO I'm having a similar issue, were you a...Hey MAO I'm having a similar issue, were you able to find a soultion?BakerJhttps://www.blogger.com/profile/13952557277476444079noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-74511208723148904192020-02-05T07:40:31.235+00:002020-02-05T07:40:31.235+00:00I've got 9.18V on Pin 1 and Pin 8. I am using...I've got 9.18V on Pin 1 and Pin 8. I am using a 1N4001 for D3 only.HighSolsticehttps://www.blogger.com/profile/06713409917336963138noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-64171072074663376392020-01-29T14:53:45.698+00:002020-01-29T14:53:45.698+00:00What voltage do you have at pins 1 and 8?
FWIW, o...What voltage do you have at pins 1 and 8?<br /><br />FWIW, on the 2nd 7660 version you can omit the 10uf cap between pins 2 and 4. And after doing that, you can also ground pin 5. (That cap is only needed when using the -9v output at pin 5)<br /><br />But do not ground pin 5 without removing the 10uf cap between pins 2 and 4. <br /><br />MAOhttps://www.blogger.com/profile/16009444316767677263noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-81825871789651731092020-01-29T13:46:33.942+00:002020-01-29T13:46:33.942+00:00What diodes are you using? If you are using 1N4001...What diodes are you using? If you are using 1N4001, change them to 1N5817.Arnold Dikstaalhttps://www.blogger.com/profile/00591790612241477571noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-30273005691696701862020-01-29T06:27:23.136+00:002020-01-29T06:27:23.136+00:00I just checked and my build(2nd 7660S version) is ...I just checked and my build(2nd 7660S version) is putting out below 14V now. It used to work fine, does this mean I blew a cap? I can’t see any visual signs that any burned up.HighSolsticehttps://www.blogger.com/profile/04554433801863677389noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-86465467946938421402019-12-04T17:27:38.299+00:002019-12-04T17:27:38.299+00:00I tried out the voltage display but it dropped the...I tried out the voltage display but it dropped the output down to 16V so I decided against including it in the finished build. Works great for my needs though, might have to build a second one soon.HighSolsticehttps://www.blogger.com/profile/04554433801863677389noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-43678700360377490882019-12-04T17:23:56.422+00:002019-12-04T17:23:56.422+00:00This comment has been removed by the author.HighSolsticehttps://www.blogger.com/profile/04554433801863677389noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-46108844146385637792019-11-22T17:23:08.957+00:002019-11-22T17:23:08.957+00:00Well, do not go too wild.. A 7660s can deliver abo...Well, do not go too wild.. A 7660s can deliver about 40mA and a LT1054 about 100mA so it will not be able to supply a lot of chained effects.Arnold Dikstaalhttps://www.blogger.com/profile/00591790612241477571noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-47589875894531010532019-11-22T17:06:54.519+00:002019-11-22T17:06:54.519+00:00Thanks Arnold! That worked perfectly! I put anot...Thanks Arnold! That worked perfectly! I put another pot on the 9V side too. Now I just need to box it up and hide it underneath my pedalboard. I'm also considering adding a voltage display to mine, just gotta try it out and figure out how much current that will leave me with. Doubt it will be an issue though, I'm going to be using it primarily to power my Catalinbread SFT. I might test it out on some other pedals to see how they react but since that's my only 18V pedal and it would be easy to accidentally overpower a 9V pedal my SFT is probably the only one that will be in constant use. This will free up a space on my Voodoo Lab for another pedal since I won't have to rely on a voltage doubler cable taking up two slots anymore.HighSolsticehttps://www.blogger.com/profile/04554433801863677389noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-13269919016049904192019-11-21T05:57:57.878+00:002019-11-21T05:57:57.878+00:00try a 10k pot with a 10k resistor on pin 1 to grou...try a 10k pot with a 10k resistor on pin 1 to ground, +18V on pin 3 and pin 2 as Vout. When turned all the way to the left it will be voltage divider of 50%. All the way to the right it will give you 18V. It comes at a cost to the current it will provide to the board so do not use it on big current consuming boards.Arnold Dikstaalhttps://www.blogger.com/profile/00591790612241477571noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-82564738631272379552019-11-20T21:05:16.055+00:002019-11-20T21:05:16.055+00:00Could I add a pot on the 18V output to sag the vol...Could I add a pot on the 18V output to sag the voltage down to 9V?HighSolsticehttps://www.blogger.com/profile/04554433801863677389noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-34451193439768019592018-08-17T22:56:24.954+01:002018-08-17T22:56:24.954+01:00Guys I know this is an old thread, but I hope the ...Guys I know this is an old thread, but I hope the original poster will see this comment as I have found a mistake on the NE555 boards. The 220uF capacitor just below the 1nF capacitor is reversed. The negative of the cap should go to pin 3 of the 555. The way it shows on the layout will damage the capacitor. Mine is a 35V cap and it got hot and its top became round. The voltage coming out was also too low. about 14 or 15 volts. Sometimes it didn't output anything at all. I don't know how people built it the way shown in the layout and it worked?? The cap is wrong and it will blow up sooner or later :) JHSAhttps://www.blogger.com/profile/17586446548629646985noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-30260869882683399732017-08-28T19:45:30.909+01:002017-08-28T19:45:30.909+01:00Meanwhile I've finished a charge pump accordin...Meanwhile I've finished a charge pump according to the first layout (with the ne555).<br />Although I'm only getting 15.2Volts.<br />Any idea why?Anonymoushttps://www.blogger.com/profile/01965786673251414302noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-19805906708142585642017-08-27T22:20:53.606+01:002017-08-27T22:20:53.606+01:00hi Tagboarders!
I'm currently soldering a DBA ...hi Tagboarders!<br />I'm currently soldering a DBA echodream 2 and wondering to add the +18v to the input with a voltage doubler.<br />Do you think the first two design with the ne555 is suitable for this project? Currentwise...<br /><br />thanks guys in advance!<br />awesome site, good community. I already built 4-5 pedals with these schematics (two of them works perfectly already :) ) and still have wast amount of enthusiasm left. :DAnonymoushttps://www.blogger.com/profile/01965786673251414302noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-47808283332134703632017-04-10T20:40:06.998+01:002017-04-10T20:40:06.998+01:00Up and running with the NE555 configuration at abo...Up and running with the NE555 configuration at about 17.2v from a 9v battery source. Have not tried it with a power supply yet. Those higher voltage electrolytic caps take up more space. Had to get a little creative to keep this thing small.etzeppyhttps://www.blogger.com/profile/17098731413786212979noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-49244497965170012312017-04-06T19:31:59.927+01:002017-04-06T19:31:59.927+01:00Correct On-None-On is the same as On-On you'll...Correct On-None-On is the same as On-On you'll see both indentificatoins. The difference between the two wiring options is for space and it's just a different way to do it. Both use the same 2 position switch, either you get +9V or +18V. Again there are 2 possible voltages, due to 2 possible positions. Zachhttps://www.blogger.com/profile/00044917566185720896noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-40711953883942697132017-04-06T16:59:34.310+01:002017-04-06T16:59:34.310+01:00Duh...a little Google action shows I'm not ove...Duh...a little Google action shows I'm not overly bright. It seems that "On-none-On" is not the same as "On-Off-On". Looks like I need the DPDT that Tayda calls "On-On".<br /><br />Am I correct that only reason to use a DPDT On-On instead of a SPDT On-On is to remove power from the circuit when in the 9V position?etzeppyhttps://www.blogger.com/profile/17098731413786212979noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-46031185860790777502017-04-06T16:43:51.197+01:002017-04-06T16:43:51.197+01:00Perhaps I have the wrong switch. The layouts are l...Perhaps I have the wrong switch. The layouts are labeled "On-NONE-On". I thought that was the same as "On-Off-On". Did I really want a DPDT "On-On" instead? etzeppyhttps://www.blogger.com/profile/17098731413786212979noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-38588327015425964272017-04-06T15:01:16.709+01:002017-04-06T15:01:16.709+01:00There are 2 positions, +18V and +9V. It's an o...There are 2 positions, +18V and +9V. It's an on-on switch. Zachhttps://www.blogger.com/profile/00044917566185720896noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-67534230471462281562017-04-06T14:20:02.283+01:002017-04-06T14:20:02.283+01:00I'm a little confused about the DPDT switching...I'm a little confused about the DPDT switching. What are the three positions? I see that Sw3 engages 18V output, but what is the difference between the other 2 positions, Sw1 and None(center)? <br />etzeppyhttps://www.blogger.com/profile/17098731413786212979noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-43616583917976144692017-02-15T05:47:54.636+00:002017-02-15T05:47:54.636+00:00YesYesArnold Dikstaalhttps://www.blogger.com/profile/00591790612241477571noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-60966951273584546012017-02-15T02:41:40.764+00:002017-02-15T02:41:40.764+00:00Also say if I wanted the bottom example (spdt/7660...Also say if I wanted the bottom example (spdt/7660s) to be just an 18v converter, without the switch, would I just remove the switch and ignore the sw1 wire? And leave everything else the same?TVLIhttps://www.blogger.com/profile/03855837459195992211noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-76304503691606440732017-02-15T02:39:39.155+00:002017-02-15T02:39:39.155+00:00Sweet thanks for the quick reply ZachSweet thanks for the quick reply ZachTVLIhttps://www.blogger.com/profile/03855837459195992211noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-53165744236908936832017-02-14T19:39:56.913+00:002017-02-14T19:39:56.913+00:00The electrolytics must be higher then the possible...The electrolytics must be higher then the possible voltage they will take. I always suggest using electrolytics that are rated 25V in general since most effects don't have voltage that high. Zachhttps://www.blogger.com/profile/00044917566185720896noreply@blogger.com