Original Fuzz Face jacks/battery switching

Started by Jay, July 27, 2015, 06:16:40 AM

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Jay

Got an old 60's FF shell that I'm building up for someone.  Just looking at old FF gut shots on Google Images, seems they used mono Cliff style jacks.  Maybe I'm being thick but how did they do the battery switching with those?  Was there a normally open contact version?  Although having said that it looks like they are wired to short input signal to ground with nothing plugged in which would imply they are the usual normally closed type.

Was the battery always on??


Electric Warrior

No. Inserting a plug into the input jack connected the battery and disconnected the input from ground.

Jay

I can see how it lifts the input from ground - it's a break jack.  Just can't see how if the tip is lifting the signal from ground the sleeve can also be making the battery ground path.  In the photo's they are clearly mono jacks, so no stereo jack ring/sleeve short going on like most people do these days.

Here's one example of many:

https://commons.wikimedia.org/wiki/File:FuzzFace_Effect_Pedal_Inside.jpg

So either it's some odd type of jack with a break contact tip and make contact sleeve, or it's always on (pretty minimal current I guess).




Jay

#4
Blimey, I was guessing! - in all the photo's I've seen the contacts are upside down/not visible, didn't know you could get jacks like that!

Actually, I guess you could just bend the sleeve contact up a little so it's normally open. 


Thanks,



brianq


Jay

That's what I usually do, along with probably the vast majority of other pedal builders.

I was just curious about how old FF's did it with mono jacks.


pinkjimiphoton

Quote from: Jay on July 28, 2015, 03:14:31 AM
That's what I usually do, along with probably the vast majority of other pedal builders.

I was just curious about how old FF's did it with mono jacks.

remember, they were all pnp. plugging them in turns them on, unplugging turns them off. your "tip" goes to "ground". i'd have to look in my DA to be sure of it, if i get a chance i'll try and take some pics tomorrow.
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