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Started by JKowalski, August 18, 2009, 01:35:58 PM

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Thomeeque

 

I'm trying to get very old and long time not used Simens C25 mobile phone to work, battery was so down that the phone did not "see it" and did not start standard charging when charger plugged in. This quick & dirty "defibrillator" put it back to life :)

T.
Do you have a technical question? Please don't send private messages, use the FORUM!

a soBer Newt



Couldn't sleep this morning so I practiced my pcb layout skills done in Ki-CAD

Cyeos

Can anyone identify these parts?
Mitsumi brand.
Googling the codes yielded nothing.

They have screwdriver-adjust slots on the top, like a trim pot - but they don't look like any trim pot I know.
Also they have too many legs!



Pulled a whole batch of them out of discarded Realistic Modulaire stereo (I'm guessing it's from the 70s.)

a soBer Newt

Quote from: Cyeos on December 12, 2011, 12:41:37 AM
Can anyone identify these parts?
Mitsumi brand.
Googling the codes yielded nothing.

They have screwdriver-adjust slots on the top, like a trim pot - but they don't look like any trim pot I know.
Also they have too many legs!



Pulled a whole batch of them out of discarded Realistic Modulaire stereo (I'm guessing it's from the 70s.)

Variable capacitors

amptramp

Quote from: Cyeos on December 12, 2011, 12:41:37 AM
Can anyone identify these parts?
Mitsumi brand.
Googling the codes yielded nothing.

They have screwdriver-adjust slots on the top, like a trim pot - but they don't look like any trim pot I know.
Also they have too many legs!



Pulled a whole batch of them out of discarded Realistic Modulaire stereo (I'm guessing it's from the 70s.)


These are variable inductors and intermediate frequency transformers, usually 455 or 460 KHz for AM and 10.7 MHz for FM.  If it is an old stereo, it may have FM multiplex coils for 19 KHz and 38 KHz and ther may be an SCA filter at 67 KHz.  The inductance is adjusted by screwing the ferrite core in and out.

Cyeos

Quote from: amptramp on December 12, 2011, 10:13:58 AM
Quote from: Cyeos on December 12, 2011, 12:41:37 AM
Can anyone identify these parts?
Mitsumi brand.
Googling the codes yielded nothing.

They have screwdriver-adjust slots on the top, like a trim pot - but they don't look like any trim pot I know.
Also they have too many legs!



Pulled a whole batch of them out of discarded Realistic Modulaire stereo (I'm guessing it's from the 70s.)


These are variable inductors and intermediate frequency transformers, usually 455 or 460 KHz for AM and 10.7 MHz for FM.  If it is an old stereo, it may have FM multiplex coils for 19 KHz and 38 KHz and ther may be an SCA filter at 67 KHz.  The inductance is adjusted by screwing the ferrite core in and out.

Oh yeah?  I guess that explains the "AM" written on them.
Very cool, thanks!

Sadly probably no use in any sort of guitar pedal or synth module project, though, huh?

Fender3D

Quote from: Cyeos on December 12, 2011, 08:46:27 PM
...

Sadly probably no use in any sort of guitar pedal or synth module project, though, huh?

You might always build new instruments for dogs or mice  :icon_mrgreen:
"NOT FLAMMABLE" is not a challenge

nexekho

Adjustable inductors?  Maybe some mega weird wah?
I made the transistor angry.

.Mike

I present to you my latest build, a four day collaboration between my girlfriend and me. 28 plates of Christmas cookies, ready to be wrapped, packed, and shipped to friends and family across the country. 11 varieties. 8+ lbs of butter/shortening.  10+ lbs of sugar. 15+ lbs of flour. Ridiculous quantities of labor.







While it usually takes several years to get on our cookie list, I may have a plate available for the right trade.  :D

Merry Christmas, or whatever is the appropriate seasonal greeting for whatever holiday(s) you may or may not celebrate!

Mike
If you're not doing it for yourself, it's not DIY. ;)

My effects site: Just one more build... | My website: America's Debate.

deadastronaut

https://www.youtube.com/user/100roberthenry
https://deadastronaut.wixsite.com/effects

chasm reverb/tremshifter/faze filter/abductor II delay/timestream reverb/dreamtime delay/skinwalker hi gain dist/black triangle OD/ nano drums/space patrol fuzz//

Tacoboy

Ow Yeah!!! Tasty!!! Yummie!!!
Let's have phun!


frequencycentral

http://www.frequencycentral.co.uk/

Questo è il fiore del partigiano morto per la libertà!

Govmnt_Lacky

Quote from: frequencycentral on December 21, 2011, 06:56:21 AM


OK... I will ask...

How'd ya do it? and...

What tubes are they?  ;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.'

frequencycentral

These are two DM160 indicator tubes http://www.r-type.org/pdfs/dm160.pdf They're the smallest tubes I've ever seen! I'm cascading them into each other for overdrive. I'm running them from a 120v SMPS. They flash in time with my strumming.   :icon_biggrin:  But they're microphonic as hell.  :icon_neutral:
http://www.frequencycentral.co.uk/

Questo è il fiore del partigiano morto per la libertà!

deadastronaut

@rick: they do look cool as hell though... :icon_cool:
https://www.youtube.com/user/100roberthenry
https://deadastronaut.wixsite.com/effects

chasm reverb/tremshifter/faze filter/abductor II delay/timestream reverb/dreamtime delay/skinwalker hi gain dist/black triangle OD/ nano drums/space patrol fuzz//

nexekho

Whatever you make with those, it must be called the Warp Core.  Obligatory.
I made the transistor angry.

Earthscum

@Rick

Microhonic, eh? I have always wanted to take advantage of something microphonic to make a real "stomp box"... something that, when engaged, does it's thing, plus picks up stage noise. Stomp your foot near it for a "Cush-Cush-Cush" over the top of whatever's being played. Tap the box with your foot for more of a "Tak-Tak-Tak" sound. Seems like a neat idea, to me, lol. I get hypersensitive on stage (I think from blocking out all the stares), and I've found myself paying attention to what the stage feels like, especially when I wear shoes with thinner soles.

Gawd, those look awesome!
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!

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birt

http://www.last.fm/user/birt/
visit http://www.effectsdatabase.com for info on (allmost) every effect in the world!