Search found 525 matches

by sofaspud
Sun Jan 31, 2010 4:25 pm
Forum: General Discussion
Topic: Mini amp circuit
Replies: 147
Views: 233177

Re: Mini amp circuit

CeaSaR, I also have CircuitMaker v6.2c and while I haven't done so, it is possible to add new components to the library. Instructions are found in Help under "Adding New Models to an Existing Symbol." Unless you're a SPICE power user and can create your own models (I sure ain't) you'll need to find ...
by sofaspud
Sun Jan 31, 2010 4:15 pm
Forum: General Discussion
Topic: Mini amp circuit
Replies: 147
Views: 233177

Re: Mini amp circuit

I was/am interested in the original (well, v6.0?) circuit for use as a headphone amp and also to power a set of Philips SBP1100 speakers I picked up at Walmart. Pretty decent small 2" speakers rated 1.5W that I'd like to use with my laptop mostly. I wanted something better than the usual LM386-type ...
by sofaspud
Sun Jan 31, 2010 3:39 pm
Forum: General Discussion
Topic: LED question
Replies: 4
Views: 1064

LED question

I was going over an old N&V article from Feb2008, 'Follow the Flashlight Evolution', and in it the author describes a simple incandescent-to-LED flashlight upgrade. Basically, he uses a 2 AA (3 V) penlight and installs a 3 Vf 20mA white LED. No series resistor - That's the part I can't seem to wrap ...
by sofaspud
Mon Jan 25, 2010 11:48 am
Forum: General Discussion
Topic: Which DC outlet would you use ?
Replies: 9
Views: 1926

Re: Which DC outlet would you use ?

Another idea, reasonably cheap and reliable, would be to use male and female trailer connectors from the local auto parts store. You can even get the "wall-socket" male side with it's own spring-loaded cap (for safety and aesthetics when not in use), the turn signal pins can carry supplemental power...
by sofaspud
Tue Jan 12, 2010 7:29 pm
Forum: Computer Programming
Topic: Win98's OTHER Restart button
Replies: 3
Views: 884

Re: Win98's OTHER Restart button

I feared becoming long-winded so I left out parts of the story. What actually happened was the PC crashed, gave me a bit of a problem, but then I was able to get to Safe Mode and run scan and defrag. Got it to reboot normally but later the same session it crashed for good. Another brief sit-down wit...
by sofaspud
Tue Jan 12, 2010 3:43 pm
Forum: Computer Programming
Topic: USB port selector hub (not a regular hub)
Replies: 7
Views: 1816

Re: USB port selector hub (not a regular hub)

In giving it some thought I think I would look into using a CD4066 CMOS switch for each port. I envision a microcontroller
then being used to enable/disable each port, with a user interface of ten pushbuttons and (optional) 10 status LEDs.
by sofaspud
Sat Jan 09, 2010 6:02 pm
Forum: Computer Programming
Topic: Win98's OTHER Restart button
Replies: 3
Views: 884

Win98's OTHER Restart button

Recently my Win98 PC crashed to a self-reboot. When it started back up, it went to a simple gray dialog box, informing me that a bad file was found and restored from the system backups, and supplying a single 'Restart' button. Didn't look good and got worse when every boot attempt went to that same ...
by sofaspud
Fri Dec 18, 2009 6:52 pm
Forum: General Discussion
Topic: People that like to argue with me :-)
Replies: 9
Views: 999

Re: People that like to argue with me :-)

Yeah, I think it's been summed up pretty well. "Trolling" was the word I was trying to think of. Others I think are just ill-informed and aren't bashful about advertising it. I say try not to get annoyed and look at the positives. It keeps you on your toes, and helps to earn you a reputation for pro...
by sofaspud
Fri Dec 18, 2009 6:32 pm
Forum: General Discussion
Topic: liquid paper, liquid wrench, and now...
Replies: 10
Views: 1429

liquid paper, liquid wrench, and now...

liquid antennas
An interesting new technology, one I can envision having ubiquitous applications. There's
already N&V-type stuff from the ham radio bunch. It's worth a look.
by sofaspud
Fri Dec 18, 2009 6:22 pm
Forum: General Discussion
Topic: Audiophiles nessecity?
Replies: 34
Views: 2793

Re: Audiophiles nessecity?

Reminds me of years ago, when I first installed the DFX plug-in for Winamp. What a mp3 epiphany! Read those first-page reviews of the 'audio grade receptacle'. So sarcastic, I just gotta luv it. BTW, I have an old Fisher solid-state amp and a pair of even older Voice of Music mono amps (for when I w...
by sofaspud
Thu Dec 17, 2009 7:34 pm
Forum: General Discussion
Topic: Audiophiles nessecity?
Replies: 34
Views: 2793

Re: Audiophiles nessecity?

Wow y'all covered a lot of territory in this thread. It wasn't mentioned that Editor Bryan touched on the subject too a month or so back. I recall he wrote something about CDs in the freezer?? :lol: I would never make excuses for those shallow thought/deep pocket audiophiles, but nor would I tend to...
by sofaspud
Sun Dec 06, 2009 3:07 pm
Forum: General Discussion
Topic: Upload .exe file for users to download?
Replies: 23
Views: 2585

Re: Upload .exe file for users to download?

Of course it'd get real ugly if postimage.org tries to display the file, but otherwise I'd try just changing
the zip or exe extension to jpg and fool the host server.
by sofaspud
Sat Dec 05, 2009 1:31 pm
Forum: General Discussion
Topic: need a capacitor
Replies: 3
Views: 642

Re: need a capacitor

From United Chemi-Con:
The SXE series capacitors were developed to withstand HCFC cleaning
agents for five minutes by ultrasonic, vapor or immersion.
Does your repair really need to be that clean? You can probably find a suitable (albeit a little dirtier) replacement at Radio Shack.
by sofaspud
Sat Dec 05, 2009 1:20 pm
Forum: Computer Programming
Topic: Looking for a software that
Replies: 1
Views: 722

Re: Looking for a software that

I know of a few "software programs" that will do this, but I'm sure they are out of the average home user's budget. The key words here are 'Digital Rights Management.' I find your request to be most unusual. If you don't want anyone to copy mp3s from your CD, keep it in a secure location and don't l...
by sofaspud
Thu Dec 03, 2009 4:58 pm
Forum: General Discussion
Topic: Gain on a Guitar Amp
Replies: 6
Views: 852

Re: Gain on a Guitar Amp

CeaSaR, you do have it right, and if I might add ('cause it keeps my gray matter from atrophy)... switching the capacitor in puts the emitter at AC ground, bypassing the resistor. Mr. Ohm says less resistance equals more current, equals more gain from the same voltage. The choice of capacitors would...