Nostradoomus
Well-known member
99% sure you got it,100k and 10k. 1003 and 1002.
Unused pedals
- Thread starter thedwest
- Start date
Thats correct and the transistors are all 2N5088 -C01 and the trim pot is P 104 705C0 (100k). Sorry for the delay.
Last edited:
Chuck D. Bones
Circuit Wizard
Here's the updated schematic. This is as good as it gets until someone measures the capacitors. I filled in my best guess for the capacitors. It will work with these values, but may not sound exactly the same as the Jupiter. YMMV.
ridgedchips
New member
I'd love to see the PCB of the Julia if you still have it. I've wanted to build one but have never found a schematic for it online.
I’ll try to take pictures in the morning and post. Luckily these are well designed and easy to unbox without desoldering anything. Gotta give em credit.
Mothman
Member
Walrus Julia please!
Nostradoomus
Well-known member
It’s not illegal, Walrus would probably frown on it (hence the white on white traces and sanded off IC chips) but they basically sell mildly modded clones so ?
Chuck D. Bones
Circuit Wizard
Need a DMM and a C-meter to trace this puppy.
I know this has probably been answered in several places but If I wanted to measure the capacitors, is there a particular setting I would use on the multi meter? I looked around but mostly found info on how to set if a capacitor was bad rather than measuring. I really need to read up on more of this stuff.
Chuck D. Bones
Circuit Wizard
Unless your DMM has a dedicated capacitance function, you are outta luck. There is a transistor tester available on eBay for under $20 that has a capacitance measurement function. I have one and it rocks! Not all in-circuit capacitance measurements will be successful, depends on the surrounding components. I think in this case, most, if not all of them could be measured in-circuit.
Nostradoomus
Well-known member
If your DMM has this symbol you’re good to go
Jovi Bon Kenobi
Well-known member
Interesting. I guess I need a new DMM because mine doesn't have that symbol.
Nostradoomus
Well-known member
A lot of them don’t
Does it need to have that plus symbol as well? Just looking through amazon, I saw several that had that symbol but none with the plus symbol also. Like this one.
benny_profane
Well-known member
CanadianDave
Well-known member
Hey, thanks for taking these and helping more of us get our hands on these pedals.
Funny that you appreciate the things more that you built yourself... Sometimes you can only look at the world and wonder why more people don’t take pride in creating and building, rather than buying.
Funny that you appreciate the things more that you built yourself... Sometimes you can only look at the world and wonder why more people don’t take pride in creating and building, rather than buying.
I completely agree. I've got tons of pedals and a handful of guitars and even though some of the pedals and guitars are better, I only want to play the pedals and guitar I built. I just put together my first all built pedal board (aside from the power supply and tuner) and pretty excited about. Really grateful to this site for all the boards and helpful info!
Chuck D. Bones
Circuit Wizard
I buy pedals if they're cheap enough just to find out what I like and what I don't. I build to other people's designs and I build to my own designs. Those last two are the most satisfying. Plugging the pedal in is almost anticlimatic sometimes...
DVMs: cheap DVMs with a capacitance measurement feature are not as good as the $18 transistor tester I mentioned above. That's not as good as a $1K impedance bridge. I don't actually know what process the transistor tester uses to measure capacitance. Time to run some experiments...
If you're seeing a transistor tester for under $5, read it again. The plastic case is $4. You have to select the model you want. An assembled board with an unassembled case is $17.94.
DVMs: cheap DVMs with a capacitance measurement feature are not as good as the $18 transistor tester I mentioned above. That's not as good as a $1K impedance bridge. I don't actually know what process the transistor tester uses to measure capacitance. Time to run some experiments...
If you're seeing a transistor tester for under $5, read it again. The plastic case is $4. You have to select the model you want. An assembled board with an unassembled case is $17.94.
Chuck D. Bones
Circuit Wizard
Sweet pedal board! Even the wood is tasty! That is way too nice to put your boot on, better play it barefoot. Just make sure you have a good ground. 
