Messages

 Sounds good to me, spring actuated and 0.100" pitch. Digikey #277-1796-ND


dave

I've been playing with low gain PNP's in a Darlington arrangement for Rangemasters as outlined by Small Bear.

https://www.smallbearelec.com/HowTos/BreadboardGeDarlingtons/BreadboardGeDarlingtons.htm

Also built one stage of this circuit (with plastic emitter caps 2uF total so i can swap power leads and use with PNP's or NPN's) for taking measurements and listening to/audition the various GE's hanging around.


thread http://www.diystompboxes.com/smfforum/index.php?topic=105551.0


dave

For accepting the decal, did the top of the enclosure have a good puddle of water on it?

Speaking of buying stuff, I just needed some high voltage wire and went looking online. Prices seem pretty high out there. I ended up salvaging enough to do the job, but I'm going to be doing some tube based stuff soon and was wondering where the best place is to get these types of things.

Apex Jr. for high voltage PTFE Teflon.  http://www.apexjr.com/wire.html

Might have to mention you want the 600v stuff.

In the meantime...To get those nice Grado headphones back into service STAT build yourself a lowly Cmoy, quick, easy chip amp that sounds terrific, can use a NE5532 if you have one on hand or the more exotic ie., expensive chips usually listed. A step up would be something like Erix 47 which really packs a wallop and can be deafening loud to really drowned out the voices. Headphone amps and Grados were my gateway drugs to amps and pedals.

http://www.head-fi.org/f/6/diy-do-it-yourself-discussions

An interesting hybrid.
http://www.pmillett.com/hybrid_head.htm
http://www.head-fi.org/t/319231/millett-starving-student-hybrid-amp

dave

Mine arrived today from Adafruit, a week to Canada after ordering (good), compact, solid piece of engineering... as expected, very nice!

dave

This is where nut drivers shine, the sockets is attached to a hollow shaft so they will reach down over the pot shaft without the bulky extra deep socket.

That's okay... before regulation almost a 700vdc differential. My first tube project, quite a few years ago.




dave

Looks to be a solder bridge to ground, third joint in- top left corner, dirt pot connection.

dave

Our countries know ice is good for more than just keeping the beverages cold.

I've used this setup to roll off bass from the neck pickup in a two pickup guitar, cuts bass but doesn't boost treble, one capacitor.

I'm only making pedals for myself, so i dont worry too much about scratching it. They are gonna get banged up pretty good by me anyways.

I just use wrenches. The toughest part of it for me is holding the switches, jacks, pots etc on the other side while tightening them.

An inner-toothed (star) lockwasher (on the inside of the enclosure) goes a long ways in helping to ease the tightening-spin.

If your guitar solo lasts more than four hours, see a doctor immediately.

Epic!

If your solo lasts more than four hours, you're probably half way through playing the last part of Layla. 

Four hours of fingernails on blackboard, ouch!

^Whoops- ExpressPCB will do neither route nor place, saves all the fun for you!

If you're just going to be home etching, ExpressPCB is simple to learn, user friendly, free and way more then adequate.

You draw your schematic save and check it with the software for any illegal problems, open the PCB section, place the components you will need on the pcb, link this project to the correct schematic. Now when you click on a component pad with the net cursor or wire cursor all the other component pads connected to it will be highlighted, now the component dance begins, how to place all the components so no wires will cross and everything is connected. One of my favourite parts of this hobby.

The downside of the software is you are limited to their fabbing if you're not prepared to do it yourself.

http://www.expresspcb.com/

... and this looks like an interesting adjunct to ExpressPCB, ExpressPCB to Gerber possibilties. Downloaded the freeware the other day but haven't had much of a chance to play. Need to pay for the versions that will do the conversion but the free version appears to have some nice options.

http://www.robotroom.com/CopperConnection/Converting-Express-PCB-Files.html

dave

And no... automatic layouts aren't done by the software, the software shows the connections that need to be made, it's up to the designer to figure how the components are arranged to satisfy the needed connections.