Search found 391 matches

by WhiteKeyHole
29 Jun 2011, 21:09
Forum: Boutique Stompboxes dissected...
Topic: Freekish Blues- Alpha Drive
Replies: 226
Views: 82734

Re: Freekish Blues- Alpha Drive

It's the one that says "C7" next to it ... I don't see the difficulty with this. Apparently you can identify "C5", what makes "C7" any different in that regard?
by WhiteKeyHole
29 Jun 2011, 03:07
Forum: Boutique Stompboxes dissected...
Topic: Freekish Blues- Alpha Drive
Replies: 226
Views: 82734

Re: Freekish Blues- Alpha Drive

On what PCB?
by WhiteKeyHole
28 Jun 2011, 22:03
Forum: Boutique Stompboxes dissected...
Topic: Freekish Blues- Alpha Drive
Replies: 226
Views: 82734

Re: Freekish Blues- Alpha Drive

Skreddy wrote:The only thing I'm not seeing in this thread, and please correct me if I'm mistaken, is a schematic with the Joyo part names. I'm not exactly sure what the Joyo C7 (the one replaced part) is in the OCD schem...
It's the output capacitor.
by WhiteKeyHole
27 Jun 2011, 10:40
Forum: Boutique Stompboxes dissected...
Topic: Freekish Blues Betty Boost Guts
Replies: 69
Views: 18756

Re: Freekish Blues Betty Boost Guts

Never mind, I see now that you were responding to Seiche. My bad.
by WhiteKeyHole
27 Jun 2011, 10:37
Forum: Boutique Stompboxes dissected...
Topic: Freekish Blues Betty Boost Guts
Replies: 69
Views: 18756

Re: Freekish Blues Betty Boost Guts

What? Not really. Much closer is the Freq Boost. Based on this shot, I'd say the Betty Boost is very probably a Boosta Grande.
by WhiteKeyHole
27 Jun 2011, 01:04
Forum: Amplifiers
Topic: Stain choice for latest combo
Replies: 6
Views: 2110

Re: Stain choice for latest combo

Looks great.
by WhiteKeyHole
26 Jun 2011, 10:57
Forum: Boutique Stompboxes dissected...
Topic: Freekish Blues- Alpha Drive
Replies: 226
Views: 82734

Re: Freekish Blues- Alpha Drive

yahoo! wrote:so what is exact values need to change in the joyo ultimate drive pedal?
https://www.freestompboxes.org/viewtopic ... 42#p150242
by WhiteKeyHole
24 Jun 2011, 18:26
Forum: Boutique Stompboxes dissected...
Topic: Freekish Blues- Alpha Drive
Replies: 226
Views: 82734

Re: Freekish Blues- Alpha Drive

Looks the same to me. Hilarious, he broke a trace scratching out the silkscreen and so had to replace it with a jumper.

:lol:
by WhiteKeyHole
24 Jun 2011, 16:28
Forum: Boutique Stompboxes dissected...
Topic: Bearfoot - Model H [traced]
Replies: 53
Views: 17831

Re: Bearfoot Model H [traced]

Thanks, though I do understand the why of it -- the question was posed for rhetorical effect. I was pushing that he seek a real clarification.
by WhiteKeyHole
24 Jun 2011, 03:35
Forum: Printed/Published Online Designs
Topic: RnFR - Nice Little Overdrive, Four Horsemen
Replies: 34
Views: 11743

Re: RnFR - Nice Little Overdrive, Four Horsemen

Good build. What's the GE diode doing, I don't notice one in your schematic? Low-drop polarity protection?
by WhiteKeyHole
24 Jun 2011, 03:21
Forum: Boutique Stompboxes dissected...
Topic: Bearfoot - Model H [traced]
Replies: 53
Views: 17831

Re: Bearfoot Model H [traced]

There is a photograph on Flickr of a BJFE Model H that basically looks like the Stone Grey. Must be two BJFE versions, as the one in the photograph doesn't seem to have a trimmer. Makes sense. Would be pretty pointless to release the Bearfoot and the Mad Professor otherwise. Single PCB for three Bea...
by WhiteKeyHole
23 Jun 2011, 14:27
Forum: Boutique Stompboxes dissected...
Topic: Bearfoot - Model H [traced]
Replies: 53
Views: 17831

Re: Bearfoot Model H [traced]

Yeah, R15.
by WhiteKeyHole
23 Jun 2011, 11:56
Forum: Boutique Stompboxes dissected...
Topic: Freekish Blues- Alpha Drive
Replies: 226
Views: 82734

Re: Freekish Blues- Alpha Drive

Just look at the PCB, notice that the components are labelled? The one that says "C7" next to it is the one to change. You can see it right in the photograph, to the right of the op-amp.
by WhiteKeyHole
23 Jun 2011, 11:10
Forum: Boutique Stompboxes dissected...
Topic: Freekish Blues- Alpha Drive
Replies: 226
Views: 82734

Re: Freekish Blues- Alpha Drive

Read the post directly following that one:
WhiteKeyHole wrote:If your Joyo pedal does not have a third MOSFET (transistor) near the bottom of the board, you must instead change capacitor "C7" to 100n (104).
by WhiteKeyHole
23 Jun 2011, 08:09
Forum: Boutique Stompboxes dissected...
Topic: Bearfoot - Model H [traced]
Replies: 53
Views: 17831

Re: Bearfoot Model H [traced]

J1 and J2 are, basically, the same configuration found in the Model H. J3 and J4 are the other method I mentioned, the JFETs are configured as current sources (regulators, limiters, what have you).
by WhiteKeyHole
23 Jun 2011, 07:15
Forum: Boutique Stompboxes dissected...
Topic: Bearfoot - Model H [traced]
Replies: 53
Views: 17831

Re: Bearfoot Model H [traced]

Other than using it as a current source.
by WhiteKeyHole
23 Jun 2011, 07:09
Forum: Boutique Stompboxes dissected...
Topic: Bearfoot - Model H [traced]
Replies: 53
Views: 17831

Re: Bearfoot Model H [traced]

I did check the pin arrangement, would be foolish not to. Anyway, seems like a diode to me. Gate being the anode, drain/source being the cathode. To quote Wikipedia, "The gate(G) (control) terminal has doping opposite to that of the channel, which surrounds it, so that there is a P-N junction a...
by WhiteKeyHole
23 Jun 2011, 04:35
Forum: Boutique Stompboxes dissected...
Topic: Bearfoot - Model H [traced]
Replies: 53
Views: 17831

Re: Bearfoot Model H [traced]

Wait, never mind. Why don't you think it's correct? Makes sense to me...
by WhiteKeyHole
23 Jun 2011, 04:31
Forum: Boutique Stompboxes dissected...
Topic: Bearfoot - Model H [traced]
Replies: 53
Views: 17831

Re: Bearfoot Model H [traced]

He uses them in the same way in the Fire Red Fuzz,