AMZ FX ANALOG ALCHEMY GEOFX MEF ROG MEF DIY WIKI

Need a guinea pig for testing

Started by Govmnt_Lacky, July 23, 2011, 03:59:03 PM

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Govmnt_Lacky

July 23, 2011, 03:59:03 PM
I stumbled upon a rather LARGE batch of old germanium diodes. They are marked 1N781A and according to the datasheet here:

http://www.datasheetarchive.com/1N781A-datasheet.html

it looks like they would be great for some diode-based clipping projects. So I would like to offer some FREE pieces to the FIRST 3 U.S. based people who may have a breadboard set up with a project that these would benefit from. All I ask in return is for a little feedback on how they sounded in-circuit and what type circuit you used them in.

I would try to set something up myself but, I really do not have the time right now and my breadboard is clean at the moment (first time in about 2 years  :o)

Let me know if you are interested.  ;D
A Veteran is someone who, at one point in his or her life, wrote a blank check made payable to The United States of America
for an amount of 'up to and including my life.'

boogietone

#1
July 23, 2011, 06:14:30 PM
I have a clipper circuit that's been bouncing around on my workbench while I finish up some other projects.
An oxymoron - clean transistor boost.

Govmnt_Lacky

#2
July 23, 2011, 06:16:14 PM
Quote from: boogietone on July 23, 2011, 06:14:30 PM
I have a clipper circuit that's been bouncing around on my workbench while I finish up some other projects.

Cool!

PM me your details so I can get some out to ya'  ;D
A Veteran is someone who, at one point in his or her life, wrote a blank check made payable to The United States of America
for an amount of 'up to and including my life.'

Earthscum

#3
July 24, 2011, 01:21:03 AM
I have a smallish batch of OLD OA85's I'd pit them against. I'll only have about 10 left after my 10-run of fuzzes I designated them for, and another 10 or so if I don't do a run of the bass fuzzes (I'm not sure about the bass fuzz I'm using these in... may run Schottky instead of Ge).

Anyways, I got my batch from an old jar full of parts dating no later than about '63, that I could tell. I have a bunch of random Ge's as well... couple Sylvania 1N112's, couple 1N43's... got a super mojo "USAF" marked black tophat 1N315 I gots to find a couple USAF Ge transies to go with.  :icon_twisted:
Give a man Fuzz, and he'll jam for a day... teach a man how to make a Fuzz and he'll never jam again!

http://www.facebook.com/Earthscum

Keppy

#4
July 24, 2011, 02:20:11 AM Last Edit: July 24, 2011, 02:32:15 AM by Keppy
I'm making a ring modulator soon I was gonna try Ge diodes in. I'd love to try some!

[edit] I know that's not a clipping circuit. But it's cool! I'm also planning to put an Octavia and a modified Univox Squarewave on the breadboard, if those are more interesting to you.
"Electrons go where I tell them to go." - wavley

LucifersTrip

#5
July 24, 2011, 07:22:54 AM
I'm working on a Muff Fuzz now and have gone thru a bunch of different ge diodes, but I'd always like to try more.

Rather than sending for free, I could send you 10 vintage 1960's 1N192's in exchange for 10 of yours...that's if you don't already have 192's and would like more variety.
always think outside the box

EATyourGuitar

#6
July 24, 2011, 01:17:38 PM
I ordered some Russian Д2Д germanium diodes and КД522 silicon diodes. they should be here in about a week. maybe we can trade 10 for 10. or 5 + 5 for 10 of yours. we could trade some of my 2n5133 germanium NPN and МП16Б germanium PNP also if your interested.
WWW.EATYOURGUITAR.COM <---- MY DIY STUFF

Govmnt_Lacky

#7
July 24, 2011, 02:16:50 PM Last Edit: July 24, 2011, 02:20:27 PM by Govmnt_Lacky
Sounds like there is a lot of interest.

I am only willing to ship within the US cause I can just throw them in an envelope on the cheap!  :icon_rolleyes:

I have had 2 people PM me as of now. If anyone else is interested, send me a PM with your address and I will try to get some off to you.

Only going to accomidate a few people with some freebies so 1st come 1st served.

Thanks  ;D

EDIT: I appreciate all of the offers for trades however, the only items that I am in need of are 3PDTs, MN3008 BBDs, and a Wah pot. These are really not "trade worthy" for some Germ diodes (unless... of course you REALLY need the diodes  ;))
A Veteran is someone who, at one point in his or her life, wrote a blank check made payable to The United States of America
for an amount of 'up to and including my life.'

Govmnt_Lacky

#8
July 24, 2011, 04:41:25 PM
Thanks everyone. I have enough guinea pigs now!  ;D

To those who PM'd me, I will try to get these out by the end of next week.
A Veteran is someone who, at one point in his or her life, wrote a blank check made payable to The United States of America
for an amount of 'up to and including my life.'

Govmnt_Lacky

#9
August 02, 2011, 03:34:30 PM
Diodes were sent out to my willing volunteers last Thursday.

Thanks for offering to help. Looking forward to the feedback  ;)
A Veteran is someone who, at one point in his or her life, wrote a blank check made payable to The United States of America
for an amount of 'up to and including my life.'

LucifersTrip

#10
August 02, 2011, 03:39:29 PM
Quote from: Govmnt_Lacky on July 24, 2011, 02:16:50 PM


EDIT: I appreciate all of the offers for trades however, the only items that I am in need of are 3PDTs, MN3008 BBDs, and a Wah pot. These are really not "trade worthy" for some Germ diodes (unless... of course you REALLY need the diodes  ;))

i would do a 3pdt for 25 -30 diodes...
always think outside the box

Govmnt_Lacky

#11
August 02, 2011, 03:44:22 PM
Quote from: LucifersTrip on August 02, 2011, 03:39:29 PM
i would do a 3pdt for 25 -30 diodes...

I would do that deal   ;D

BUT..... let me wait for the feedback from my guinea pigs. Honestly, I do not want to send out any of these in trade only to find out that they are terribly suited for circuits.

Once I get a feeling for how they work, I will definitely be interested in some trading or what not...

Unless you REALLY, REALLY, want to trade for these now!  ;)
A Veteran is someone who, at one point in his or her life, wrote a blank check made payable to The United States of America
for an amount of 'up to and including my life.'

LucifersTrip

#12
August 02, 2011, 03:54:05 PM
Quote from: Govmnt_Lacky on August 02, 2011, 03:44:22 PM
Quote from: LucifersTrip on August 02, 2011, 03:39:29 PM
i would do a 3pdt for 25 -30 diodes...

I would do that deal   ;D

BUT..... let me wait for the feedback from my guinea pigs. Honestly, I do not want to send out any of these in trade only to find out that they are terribly suited for circuits.

Once I get a feeling for how they work, I will definitely be interested in some trading or what not...

Unless you REALLY, REALLY, want to trade for these now!  ;)

there's no rush, but as long as the diodes are not broken, they're cool

did you measure the forward voltage?
always think outside the box

Govmnt_Lacky

#13
August 02, 2011, 04:01:20 PM
Quote from: LucifersTrip on August 02, 2011, 03:54:05 PM
did you measure the forward voltage?

Diode check on DMM indicates 0.275 to 0.278 consistent through 25 pieces.
A Veteran is someone who, at one point in his or her life, wrote a blank check made payable to The United States of America
for an amount of 'up to and including my life.'

EATyourGuitar

#14
August 02, 2011, 09:13:08 PM
I got them in the mail, they look almost exactly like some other germanium diodes i have. Ill post more when I test them in a pedal
WWW.EATYOURGUITAR.COM <---- MY DIY STUFF

Govmnt_Lacky

#15
August 03, 2011, 07:11:01 AM
Quote from: EATyourGuitar on August 02, 2011, 09:13:08 PM
I got them in the mail, they look almost exactly like some other germanium diodes i have. Ill post more when I test them in a pedal

I have noticed that most Germs look the same. I have some others lying around here and they look like twins!
A Veteran is someone who, at one point in his or her life, wrote a blank check made payable to The United States of America
for an amount of 'up to and including my life.'

boogietone

#16
August 03, 2011, 01:03:48 PM
Received them. Will post comments. Thanks.
An oxymoron - clean transistor boost.

Govmnt_Lacky

#17
August 07, 2011, 08:50:16 AM
It has been over a week and I still have no feedback on the germ diodes that I sent out.

Have any of the people that received them been able to do any testing??
A Veteran is someone who, at one point in his or her life, wrote a blank check made payable to The United States of America
for an amount of 'up to and including my life.'

Keppy

#18
August 07, 2011, 11:49:03 AM
Unfortunately, I still haven't received them.  :icon_cry:
"Electrons go where I tell them to go." - wavley

Govmnt_Lacky

#19
August 09, 2011, 06:23:39 PM Last Edit: August 09, 2011, 06:30:53 PM by Govmnt_Lacky
Sorry... original post was a lunatic rant!

Still looking for feedback on the Germanium diodes that I sent out.

Anyone??  ;D
A Veteran is someone who, at one point in his or her life, wrote a blank check made payable to The United States of America
for an amount of 'up to and including my life.'
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