tag:blogger.com,1999:blog-5481402030233340127.post648890084875534423..comments2024-03-28T17:24:07.520-04:00Comments on Perf and PCB Effects Layouts: Hudson Electronics Broadcastdtgehringhttp://www.blogger.com/profile/09555201436004501222noreply@blogger.comBlogger81125tag:blogger.com,1999:blog-5481402030233340127.post-73878659149140290902023-08-10T04:37:51.260-04:002023-08-10T04:37:51.260-04:00I can confirm Harleking Effects' comment : the...I can confirm Harleking Effects' comment : the 100uF (C6) cap is missplaced and should go to the junction of R14 (5.6k) and C7 (1nF) instead of Gain 1. This way the layout is correct and you don't have to change the position of the 5.6k and 1nF (referring to the comment of Evan Goldsborough).<br />I found my build to be really bright at first, but after checking and correcting the position of the 100uF cap, it now sounds really close to the original.Charlyhttps://www.blogger.com/profile/13727130867224307452noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-47389510411417390102023-07-28T19:26:17.800-04:002023-07-28T19:26:17.800-04:00There’s actually 3 120uF caps, but on other layout...There’s actually 3 120uF caps, but on other layouts they switch the one closest to the pump to a 10uF cap… Foxbathttps://www.blogger.com/profile/06574106410707171394noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-83442614675305152012023-02-03T07:33:54.576-05:002023-02-03T07:33:54.576-05:00Hi, the layout is incorrect. The 100uf cap negativ...Hi, the layout is incorrect. The 100uf cap negative lead should not go to Gain 1, but to the junction of the 5.6k resistor and 1nf capacitor. Harleking Effectshttps://www.blogger.com/profile/12080501768564226056noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-24596004314546157192022-12-01T09:39:49.115-05:002022-12-01T09:39:49.115-05:00Has this layout been fixed concerning the 5.6k res...Has this layout been fixed concerning the 5.6k resistor (R14) and 1nF capacitor (C7) going to the gain pot?ClassicFuzzhttps://www.blogger.com/profile/16806215654593217637noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-82334020604461390862022-03-31T15:03:16.814-04:002022-03-31T15:03:16.814-04:00Is there any suggestion about Hfe of BC549C and ge...Is there any suggestion about Hfe of BC549C and germanium OC71 transistor?<br />Many thanksburn61https://www.blogger.com/profile/10836183561570063435noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-85822823565353232852022-03-28T14:10:17.315-04:002022-03-28T14:10:17.315-04:00Many thanks for your answer and helping, very prec...Many thanks for your answer and helping, very precious.<br />ciao from Italy burn61https://www.blogger.com/profile/10836183561570063435noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-764646670334238702022-03-28T10:13:33.911-04:002022-03-28T10:13:33.911-04:00You can leave pin 5 connected. I've seen volta...You can leave pin 5 connected. I've seen voltage doubler schematics with the 1044/7660 where pin 5 is grounded and where it's not. The key thing is connecting pin 1 and 8. And yes you can use the 7660 in place of the 1044.Effects Layoutshttps://www.blogger.com/profile/11341183658959824998noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-90007672835137086412022-03-26T11:09:19.511-04:002022-03-26T11:09:19.511-04:00Can I use the 7760 in the same way of 1044? thx!Can I use the 7760 in the same way of 1044? thx!Yuhttps://www.blogger.com/profile/13605621091234661264noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-69975337612289794512022-03-26T05:29:36.986-04:002022-03-26T05:29:36.986-04:00Hi,
Talking about LT1054/max1044 replacement, as y...Hi,<br />Talking about LT1054/max1044 replacement, as you describe in 1981 DRV project, the only thing to do (if you choose max1044 chip) is only connect pin 1 with pin 8. Looking the 1981 drv pcb, pin 5 of LT1054 is NOT connected, while the same pin on Broadcast project is grounded.<br />Since I only have max 1044 chip available, can I replace the chip without problems, or have I cut the trace of pin 5 grounded?.<br />Thank you very muchburn61https://www.blogger.com/profile/10836183561570063435noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-62515056174314234822021-11-19T16:49:49.219-05:002021-11-19T16:49:49.219-05:001/4 watt will be fine.1/4 watt will be fine.Effects Layoutshttps://www.blogger.com/profile/11341183658959824998noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-45395630732499808722021-11-13T13:46:52.026-05:002021-11-13T13:46:52.026-05:00Would 1/4w resistors be good enough if I wanna pow...Would 1/4w resistors be good enough if I wanna power this pedal with 18 or 24v? Or would I need bigger resistors?<br /><br />Thanks so much for all your work!Jairohttps://www.blogger.com/profile/14609300908102505206noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-22126978671570015862021-05-15T05:41:58.670-04:002021-05-15T05:41:58.670-04:00Same for me. Did someone solve the problem ?Same for me. Did someone solve the problem ?Cochoishttps://www.blogger.com/profile/06508688482896325016noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-16402137837317510742021-03-28T15:04:53.858-04:002021-03-28T15:04:53.858-04:00Which 15v diodes is everyone using?Which 15v diodes is everyone using?NOChttps://www.blogger.com/profile/04777017979825354934noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-47476515857325905352020-09-02T11:32:55.411-04:002020-09-02T11:32:55.411-04:00Yep. I built it and it worked fine at 9 volts but ...Yep. I built it and it worked fine at 9 volts but was garbage at 24 (extremely gated, and less than unity volume even when maxed out). Fixed my layout to match the schematic and it sprang to life. Ryan Richardsonhttps://www.blogger.com/profile/02137594159287535560noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-36572739592984646922020-08-21T21:57:33.754-04:002020-08-21T21:57:33.754-04:00Can I use a 600:600 ohm transformer for this?
I ha...Can I use a 600:600 ohm transformer for this?<br />I have 8x nice little 600:600 audio transformers, which I'd love to hear in this context, but I guess this may load the circuit too much?Ev Loutonianhttps://www.blogger.com/profile/03390416650242896686noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-66286262926320908272020-08-04T15:46:27.560-04:002020-08-04T15:46:27.560-04:00Indeed there is this mistake in the layoutIndeed there is this mistake in the layoutAnonymoushttps://www.blogger.com/profile/00367942495292459580noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-88391868287599078662020-06-29T13:41:25.316-04:002020-06-29T13:41:25.316-04:00you are correct... there is a mistake in the layou...you are correct... there is a mistake in the layout right where you mentionedAnonymoushttps://www.blogger.com/profile/00367942495292459580noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-1370746491199343902020-05-11T14:39:25.928-04:002020-05-11T14:39:25.928-04:00Is there a mistake at the pin 1 of the Gain pot? T...Is there a mistake at the pin 1 of the Gain pot? The negative side of the C6 cap should go where the R14 (5.6K) and the C7(1n) meet according to the schematic and it goes directly to the pin1 of the Gain pot in the layout... am I right about that?Anonymoushttps://www.blogger.com/profile/00367942495292459580noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-59811327912501799232020-01-14T02:26:03.546-05:002020-01-14T02:26:03.546-05:00Like someone else has mentioned, the pin spacing f...Like someone else has mentioned, the pin spacing for the transformer doesn't match. I bought the correct TY-141P, had to bend the legs in a few mm.tertiumsquidhttps://www.blogger.com/profile/16175375034329040146noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-9671512359474873482019-12-05T05:40:33.855-05:002019-12-05T05:40:33.855-05:00Has anyone drawn an actual schematic of this yet?
...Has anyone drawn an actual schematic of this yet?<br />Thanks<br />EdEdhttps://www.blogger.com/profile/14084060883673191310noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-78511619930391775342019-06-19T12:01:00.633-04:002019-06-19T12:01:00.633-04:00I tried it without transformers, it's realy wo...I tried it without transformers, it's realy working good, but sund very hard on a little gain. Today i've got transformers, sound - realy nice & soft. Q1 should have hfe more than 500, I used 2n5088 = 550, Q2 - mp 20, HFe = 69. CHip - 7660 = 24v. I made swith to get 9 & 24 volts, it's realy diferent soond. About 2 3pdt knobs - its very simple to do. 3pdt switch flick between two volume 25k pots. 3 pin potentiometers going through 3pdt to exit transformer. Find photo hudson electronics broadcast dual switch inside< & you will see it. https://imgur.com/55GF7bhZZOYDhttps://www.blogger.com/profile/17557567967251809829noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-18720900385772157862019-06-15T04:15:26.887-04:002019-06-15T04:15:26.887-04:00https://imgur.com/55GF7bhhttps://imgur.com/55GF7bhZZOYDhttps://www.blogger.com/profile/17557567967251809829noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-44364244603534218532019-06-14T15:19:44.789-04:002019-06-14T15:19:44.789-04:00its very simple to do. 3pdt switch flick between t...its very simple to do. 3pdt switch flick between two volume 25k pots. 3 pin potentiometers going through 3pdt to exit transformer. Find photo hudson electronics broadcast dual switch inside< & you will see it.ZZOYDhttps://www.blogger.com/profile/17557567967251809829noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-36869791947322702182019-01-31T03:29:19.251-05:002019-01-31T03:29:19.251-05:00In reference to the schematic linked at the top of...In reference to the <a href="https://i.imgur.com/nrkQFyR.png" rel="nofollow">schematic linked at the top of this page</a>:<br /><br />There was an conversation between Влад Чудак and Evan Goldsborough regarding C7 (1nF), R14 (5k6), and the GAIN pot (B25k). The schematic shows the sum of resistances (R14 + GAIN in series) across C7; the suggestion from Влад Чудак was that R14, GAIN, and C7 should all be in parallel. I'm not sure this was ever decisively resolved.<br /><br />It makes quite a difference to the circuit:<br /><br />If it's the summed resistances (as per schematic), then the resistance across C7 ranges from 5k6 at one end of the GAIN pot to 255.6k across C7 at the other end of the GAIN pot.<br /><br />If it's the paralleled resistances (as per Влад Чудак), then the resistance across C7 ranges from 0 at one end of the GAIN pot to 5k47 at the other end of the GAIN pot.<br /><br />Can anyone verify which is correct?Unknownhttps://www.blogger.com/profile/03180947729300863936noreply@blogger.comtag:blogger.com,1999:blog-5481402030233340127.post-22152120747725428262018-11-12T09:27:17.564-05:002018-11-12T09:27:17.564-05:00I would that would work then.I would that would work then.Effects Layoutshttps://www.blogger.com/profile/11341183658959824998noreply@blogger.com