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Topic: Zombie chorus with anti tick mod 1590b layout?.. (Read 10214 times)
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deadastronaut
Posts: 6909
Rob H. LONDON
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this'll be ok with 2n3904's and a 3906 wouldnt it?...i'll socket those anyway though!...just in case!.  oh hold on, i think i have 5088's... gonna have to sub a few bits in this, haven't any 39k's..just 33k's,  no 3.3n's or 15n's... or 2.7n...  got 2.2/4.7 10/22 2.2 ...i'm sure it'll be ok, just tonally different i guess...  i'll keep track of what i sub... |
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Scruffie
Posts: 1744
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3904 & 3906 work fine in the Small Clone. With those vales, you'll change the frequencies of the filters, so you could end up with a darker pedal or one that lets clock noise through, probably be fine though. Those 3007s... you tested them in a working pedal? All the same date code  |
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deadastronaut
Posts: 6909
Rob H. LONDON
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cheers scruffie: nope not tested at all...not even started...  edit: just read the mn3007's says: mn3007 9N ...all of them..  |
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« Last Edit: May 28, 2012, 11:48:38 AM by deadastronaut »
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Scruffie
Posts: 1744
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cheers scruffie: nope not tested at all...not even started... edit: just read the mn3007's says: mn3007 9N ...all of them.. That's what I found questionable... they could all be from the same batch of course, or they could also be from the same faking stamp... |
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deadastronaut
Posts: 6909
Rob H. LONDON
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hmmmmmmm.....oh @#$%!..  yeah same as pelle's.. oh well soon find out.. |
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Perrow
Posts: 1535
Pelle T
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... or we'll file a group action |
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Perrow
Posts: 1535
Pelle T
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this'll be ok with 2n3904's and a 3906 wouldnt it?...i'll socket those anyway though!...just in case!. oh hold on, i think i have 5088's... gonna have to sub a few bits in this, haven't any 39k's..just 33k's, no 3.3n's or 15n's... or 2.7n... got 2.2/4.7 10/22 2.2 ...i'm sure it'll be ok, just tonally different i guess... i'll keep track of what i sub... I'm just short of the 33nf. Everything else is on the board already  My Zombie is good to go as soon as I've wired up pots and jacks. |
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Perrow
Posts: 1535
Pelle T
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Wired up the Zombie, sound but no chorus |
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Scruffie
Posts: 1744
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Wired up the Zombie, sound but no chorus Voltages? |
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Perrow
Posts: 1535
Pelle T
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Any special IC? I can see that the lfo works and I get sound through the circuit, so here goes 4046:
1: 0
2: 8.98
3: 0
4:4.5
5:0
6:0.97
7:0.95
8:0
9: fluctuates around 4.4
10 and 11: fluctuates around 3.3
12:6.91
13:0
14:9
15:0
16:9
3007:
1:9
2:9
3:5.4
4-6:0
7:6.5
8:6.5
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Scruffie
Posts: 1744
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2 & 6 of the 3007 should have approximatley half voltage, what are there voltages without the 3007 in there?
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Perrow
Posts: 1535
Pelle T
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The same (pin 7 & 8 are 8.6 though).
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Perrow
Posts: 1535
Pelle T
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Pin 2 drops to 0 after a while but goes back to close to 9 if I poke around a bit on the other pins.
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deadastronaut
Posts: 6909
Rob H. LONDON
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i was just about to make a start on mine!..  got your jumpers on there?..
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« Last Edit: May 28, 2012, 05:38:49 PM by deadastronaut »
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Perrow
Posts: 1535
Pelle T
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Just one jumper,but yes.
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Perrow
Posts: 1535
Pelle T
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Found that my layout shows pin 3 of the 4046 connected to pin 6 of the 3007. The schematic has pins 3 & 4 of the 4046 connected to pin 6 of the 3007.
I'll correct that and report back.
Sadly this is a day of planned activities as well as work. After work I have three meetings/activities to attend before I can get some DIY time.
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deadastronaut
Posts: 6909
Rob H. LONDON
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2 jumpers. top left+ bottom of 4047... pin3 of 4047 is connected to D2...you mean pin 4 of the 4047?, which is connected to 4,5,6 at the mo.. busy day , i won't harrass you then.. I'll take a look art the schemo.. |
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Perrow
Posts: 1535
Pelle T
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2 jumpers. top left+ bottom of 4047...
I'm on the Zombie |
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deadastronaut
Posts: 6909
Rob H. LONDON
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ahhh i see.... i wondered why you said 4046... i'll crack on with the smally then... |
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« Last Edit: May 29, 2012, 01:36:37 AM by deadastronaut »
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Perrow
Posts: 1535
Pelle T
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Just looked and the 33nf cap I'm missing to complete my Small Clone is the input cap, guess I'll be ok with a 47nf there I'll try that too tonight. Or more likely tomorrow night, will have to clear out everything on our balcony tonight (after the meetup with my sons new preschool class, a picnic with daycare, and an information meeting about renovations to our housing cooperative, did I mention I'm at work?) so the contractor that'll change the windows can dump the new ones there tomorrow morning. |
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