tag:blogger.com,1999:blog-6847048658257278783.post3740017449284375394..comments2024-03-27T15:26:01.893+00:00Comments on Guitar FX Layouts: JHS Angry Charlie V3IvIarkhttp://www.blogger.com/profile/08416945174853142251noreply@blogger.comBlogger58125tag:blogger.com,1999:blog-6847048658257278783.post-31687415207492250952023-09-19T03:14:22.505+01:002023-09-19T03:14:22.505+01:00I build the pedal and it sounds amazing, but I wou...I build the pedal and it sounds amazing, but I would like to change the bass control, I only can see the difference when the control is next to maximum, in this case, Is there some mod to it?Fernandohttps://www.blogger.com/profile/08022476676513654529noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-45393861034824321732019-11-14T15:27:11.526+00:002019-11-14T15:27:11.526+00:00This comment has been removed by the author.Jhonshttps://www.blogger.com/profile/00316877194829420694noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-21382624815956310032019-11-13T06:51:58.007+00:002019-11-13T06:51:58.007+00:00Or maybe the tl072 is fake? Or maybe the tl072 is fake? Jhonshttps://www.blogger.com/profile/00316877194829420694noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-15240493572172702352019-08-19T13:24:37.298+01:002019-08-19T13:24:37.298+01:00Update, always double check veroboard especially b...Update, always double check veroboard especially bought from chine. Check continuity between strip, I've mine connected between themFukdemolhttps://www.blogger.com/profile/06483918268528143853noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-58249492293779797492019-07-14T13:35:28.412+01:002019-07-14T13:35:28.412+01:00I'm working on this pedal and I don't know...I'm working on this pedal and I don't know what's wrong. I've resoldering everything, tinkering it for 2 days with no result. The only thing I changed is the red led 3mm with green one, cause I don't have any red led. The problem is the sound kinda unstable. It does distort, no squeal, no white noise etc. Its sound perfect, but unstable like no sustain at all. At some point when I strum it hard, its just sound a while and gone. But I can still see my guitar string moving. Does anybody has the same problem?Fukdemolhttps://www.blogger.com/profile/06483918268528143853noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-1635444303262361672019-05-28T19:15:45.641+01:002019-05-28T19:15:45.641+01:00Boa tarde. Tudo normal. Quando os controles estão ...Boa tarde. Tudo normal. Quando os controles estão no máximo aparece um apito.JOÃOhttps://www.blogger.com/profile/09428842019000821005noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-30150269538683189472019-05-27T20:29:36.945+01:002019-05-27T20:29:36.945+01:00O já circuito está abrigado numa caixa metálica? c...O já circuito está abrigado numa caixa metálica? caso, sim, reveja como a fiação (offboard wiring) está feita, pode ser problema com o aterramento. Iagohttps://www.blogger.com/profile/13478141026000247956noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-12887240568852553272019-05-27T13:18:45.211+01:002019-05-27T13:18:45.211+01:00Bom dia. Funcionou, mas ta com um ruído alto.
Bom dia. Funcionou, mas ta com um ruído alto.<br />JOÃOhttps://www.blogger.com/profile/09428842019000821005noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-27730394464690100912019-04-30T04:59:18.661+01:002019-04-30T04:59:18.661+01:00By the way, if you have oscillation or instability...By the way, if you have oscillation or instability on this circuit, try this modification wich allows you to set the Vref using a trimpot:<br />https://i.imgur.com/J4ugBgN.pngLeonardo Halfeldhttps://www.blogger.com/profile/04849289563839638523noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-43851013944859305402019-04-29T03:42:38.075+01:002019-04-29T03:42:38.075+01:00Yep, it's not mandatory for the circuit to wor...Yep, it's not mandatory for the circuit to work, it's just a protection!Leonardo Halfeldhttps://www.blogger.com/profile/04849289563839638523noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-87489712356597287762019-04-28T20:47:05.262+01:002019-04-28T20:47:05.262+01:00Ok I think a sorta get it.So you’re saying that I ...Ok I think a sorta get it.So you’re saying that I dont really need this diode for the circuit to work.I will finish up the wiring and see how it works.Thanks for your help Leonardo!Blueshttps://www.blogger.com/profile/16947777762079286197noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-18795262041567832162019-04-28T19:27:15.732+01:002019-04-28T19:27:15.732+01:00Both 1N5817 and 4k7 are connected directly to the ...Both 1N5817 and 4k7 are connected directly to the +9v, nothing between them.Leonardo Halfeldhttps://www.blogger.com/profile/04849289563839638523noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-7325157610494435832019-04-28T18:56:00.811+01:002019-04-28T18:56:00.811+01:00Hi again, Blues! Please, take a better look at the...Hi again, Blues! Please, take a better look at the layout. You'll see that the +9v is connected directly to the 4k7 resistor, nothing between them. The 5817 in this layout is a circuit protection. By the way, if you add a low resistance resistor (like 33 ~ 100 Ohms) in series with this diode, and add a second diode with it's anode connected to the ground, and it's cathode connected to the +V , the protection will be even better, and protected against plugging in reverse polarity power supply.Leonardo Halfeldhttps://www.blogger.com/profile/04849289563839638523noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-62951429088619017732019-04-28T16:17:42.379+01:002019-04-28T16:17:42.379+01:00http://effectslayouts.blogspot.com/2018/08/jhs-ang...http://effectslayouts.blogspot.com/2018/08/jhs-angry-charlie-v3.html?m=1 On this layout I see a diode (5817)connected right after the 4.7k resistor(CLR).It is then connected to one of the pins of the TL072.I’m guessing this is not necessary?What is this 5817 diode doing?Thanks for the reply Leonardo Halfeld!Blueshttps://www.blogger.com/profile/16947777762079286197noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-30919791421438982792019-04-28T06:27:59.739+01:002019-04-28T06:27:59.739+01:00When using a 3PDT and a mono True Bypass wiring, n...When using a 3PDT and a mono True Bypass wiring, nothing is needed between the resistor and the led. So, you don't need this diode.<br />By the way, a LED is a diode. Could this be the reason of the misunderstood? Maybe the diode you are talking about is the LED itself.Leonardo Halfeldhttps://www.blogger.com/profile/04849289563839638523noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-78078393008658687472019-04-24T04:52:30.489+01:002019-04-24T04:52:30.489+01:00Can I ask?On other layout versions of the pedal I...Can I ask?On other layout versions of the pedal I see a diode just right after the CLR that is connected to the LED.I cant seem to see it in this version.Can you help me out?Is the diode necessary?Blueshttps://www.blogger.com/profile/09464701085297001096noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-41542459118190355762019-04-17T06:41:32.482+01:002019-04-17T06:41:32.482+01:00Nothing under 1k. It will fizzle out. Try 4k7 for ...Nothing under 1k. It will fizzle out. Try 4k7 for a coloured led. I use 10k on white one so the don't burn my eyeballs out.<br />To bright, higher value resistor.cringehttps://www.blogger.com/profile/04531687385764665589noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-49335672865436044042019-04-03T17:40:25.833+01:002019-04-03T17:40:25.833+01:00yes its a led limiting resistor.
yes its a led limiting resistor.<br />Anonymoushttps://www.blogger.com/profile/13453542115178376970noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-78215011306154864002019-04-01T19:10:40.708+01:002019-04-01T19:10:40.708+01:00Can anybody tell me what the CLR resistor value is...Can anybody tell me what the CLR resistor value is? Is it to limit the led current?NightLighthttps://www.blogger.com/profile/03322412723356935206noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-89693440139115760712019-02-23T08:19:00.907+00:002019-02-23T08:19:00.907+00:00Hey! I've made some changes to the layout so t...Hey! I've made some changes to the layout so the Vref can be adjusted by a trimpot. Alex, if you want to add this image to the post, fell free for that!<br />Here it is:<br />https://i.imgur.com/J4ugBgN.pngLeonardo Halfeldhttps://www.blogger.com/profile/04849289563839638523noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-90951450628464071542019-02-23T08:17:32.520+00:002019-02-23T08:17:32.520+00:00This comment has been removed by the author.Leonardo Halfeldhttps://www.blogger.com/profile/04849289563839638523noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-15007644619408386292019-02-23T06:15:02.825+00:002019-02-23T06:15:02.825+00:00You had that problem too? The Vref calibration wor...You had that problem too? The Vref calibration worked for you? If yes, i am very happy It helped you! (:Leonardo Halfeldhttps://www.blogger.com/profile/04849289563839638523noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-83482806580309598432019-02-20T18:23:49.974+00:002019-02-20T18:23:49.974+00:00This was very helpful mate, thanks a lot!This was very helpful mate, thanks a lot!Anonymoushttps://www.blogger.com/profile/14379000116088100075noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-45415540688413276452019-02-17T21:37:59.701+00:002019-02-17T21:37:59.701+00:00Ok, i got it. I had that issue, when you turn cont...Ok, i got it. I had that issue, when you turn controls too high or too low, some instability occurs. Specially when i set Gain, Bass and Treble to maximum, and Middle to minimum. I observed that the 4.5V Vref won't work well in this circuit with a TL072, but i achieved the maximum control range (without losing volume or sound starting to sound like white noise) making VRef 2.85v. To do this, simply change the 22K resistor that goes from Ground to TL072 Pin 3 for a 11k resistor (actually i added a 22k in parallel with the existing one, gave me a more precise Vref that i wanted to achiev). You can probably change it for a 10k resistor too, and it will work fine (Vref will be around 2.8V). After that, the problem is gone! I hope this help other people who had this kind of issue!Leonardo Halfeldhttps://www.blogger.com/profile/04849289563839638523noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-80728962113106839192019-01-11T01:16:38.909+00:002019-01-11T01:16:38.909+00:00Quickest I think would be trying a 250K potentiome...Quickest I think would be trying a 250K potentiometer for the treble.Iagohttps://www.blogger.com/profile/13478141026000247956noreply@blogger.com