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todd.brust
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« Reply #75 on: February 23, 2008, 12:44:41 pm » |
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MMF is Picofarad.
33 Picofarad. I tried finding a capacitance value scale from Farad on down, but had no luck.
It goes like Farad, Microfarad, Nanofarad, Picofarad, gigafarad, and tetrafarad.
Something like that.....I may have missed one in there..... are you sure it's Pico? i am not sure if you missed one or not...there is milli but come to think of it, i have never heard of a cap rated in millifarads...i guess they just skipped milli and decided to say 1000uf instead of .001millifarads...oh well Pretty sure mm (mili mili) would be uf, just an old way of doing things... 1000th of 1000th of a Farad would be uf (micro).....
Someone please correct me if I am giving misinformation here, I've had a few Weitzens.....
You'll see that alot... And CPS (Cycles Per Second) instead of Hertz....
And Squaker, and Middler, and Condensor, etc...... i've seen the CPS term used before...when talking to the retired EE he kept using the term condenser and i was confused for a while there but i figured out what he meant never heard middler used and i've seen squacker used here once or twice
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Forceaudio
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« Reply #75 on: February 23, 2008, 12:44:41 pm » |
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MikeS
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« Reply #76 on: February 23, 2008, 03:23:17 pm » |
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I forgot to mention it's "micro-microfarad." http://en.wikipedia.org/wiki/FaradQuote from the link: "A micro-microfarad (μμF) as found in older texts is the same as a picofarad." Condenser means capacitor. A squawker is a midrange horn or cone midrange. Never heard of middler... In the real early days of tube radios when DC or AC power was a luxury, most the radios were battery powered. That's when you look at old schematics of tube circuits, the PS supply circuit is refered as "B+". Even more modern tube circuits/amplifiers that use AC power, reference the rectified DC PS as B+. There is C+, which I think is referenced to a screen supply...not really sure there. I have old textbooks around that help, but it can get confusing trying to figure out these old terminologies. Figuring out the old school trig and goemetry equations in a 1942 edition Radio Designers Handbook can be a major pain in the fucking ass. I'm math retarded as it is.....and then they use old school symbols which I have no fucking clue as to what they are....but I plug away at it when desired...
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« Last Edit: February 23, 2008, 03:36:49 pm by MikeS »
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KU40
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« Reply #77 on: February 24, 2008, 07:56:51 am » |
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so that's where B+ comes from. I've seen that on quite a few modern car audio amps and wondered. Though I still suppose it would make sense since those amps are connected to a battery.
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Forceaudio
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« Reply #77 on: February 24, 2008, 07:56:51 am » |
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95Honda
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« Reply #78 on: February 24, 2008, 11:40:48 pm » |
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So it's uf for mili-mili, right? Is that the consensus?
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MikeS
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« Reply #79 on: February 25, 2008, 12:32:58 am » |
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I'm guessing it would be.
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todd.brust
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« Reply #80 on: March 17, 2008, 09:46:39 pm » |
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DAMNIT everything i just typed got lost!!!!! Well to make things short so i don't have to sit up and type for another ten minutes. The Case is painted and i have all the parts to start working finishing everything. I'll put the pictures so you can get an idea of the color right after this post 
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todd.brust
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« Reply #81 on: March 17, 2008, 09:54:51 pm » |
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Okay here is the color scheme for the case. It was sandblasted as showed in previous posts and the primed and sealed with a black. Then the Base coat was a custom mixed blue with a blue pearl in it. After the first base coat, the color looked really dark. It was a midnight blue and when changing viewing angles, the color would flop to a dark purple, almost black. After the second base coat it brightened up a bit but was still pretty dark. Last, a clear-coat mixed mixed with a blue-green pearl was sprayed on. That really brought out the blue and looked better than i had expected. Depending on the viewing angle, the color will change from dark to light. When it really gets hit with some light you can see the pearl come out with the mix of blues and greens. It's one thing to see pictures of it, but it is really something to see in real life in the sunlight. I'll Let the pictures do the talking for now. This is the bottom piece. It gives a rough idea how the color changed from light to dark.  The case sitting on the stove top. 
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Forceaudio
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« Reply #81 on: March 17, 2008, 09:54:51 pm » |
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todd.brust
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« Reply #82 on: March 17, 2008, 10:00:49 pm » |
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The top with the flash on.  The top with the flash off.  Oh yeah the inside is just a high temp black. Nothing fancy. Nice thing is we still have about 200 bucks worth of the paint left so need be, I can make anything else match! But i need some suggestions for the dial plate. Colorwise. I need something lighter to help offset the color of the blue. Any suggestions? Hope you guys like the color, but i am off to bed. Hopefully I can make some progress finishing PS tomorrow. A week or two I am hoping. Keep your fingers crossed for me!
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MikeS
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« Reply #83 on: March 18, 2008, 12:25:58 am » |
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But i need some suggestions for the dial plate. Colorwise. I need something lighter to help offset the color of the blue. Any suggestions?
I dunno what others think, but that top panel turned out pretty tight! Good question with the faceplate.......what do you plan on doing with that chrome plated or aluminum brow piece? Polish or brush it? Paint? Is the faceplate and brow thingie all one piece? You got the black and white striped faceplate panel with the silkscreening for the selector/volume/tone...etc.. What are you going to do with the silkscreened lettering? Wing it without it? If there was a way to pinch the letter images and burn new screens and re-apply...... Those '62 Chevy dashboard knobs are kinda scary...then they could work I suppose..... Here's my thought, but it may be a bitch. Have the brow piece brushed, or the whole thing faceplate and all. Too bad the faceplate isn't attached somehow.......fabricate a brushed aluminum back panel/faceplate, anodized blue. With the brow piece brushed and anodized clear. Then use nice aluminum knobs of some sort. Or maybe a medium to lighter gray....I dunno about white...
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todd.brust
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« Reply #84 on: March 19, 2008, 05:17:32 pm » |
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I plan to polish the brow piece so it looks chrome, like it came originally. I like the Idea of the Brushed front a lot. It seems like it would work well with that blue. As for the lettering, I have someone who could do it for me cheap.
As for the dials, I have been wondering the same thing. I asked my dad about having some machined and that is a definite possibility. I might end up doing that just because those OG dials are hideous and discolored.
Everything is still up in the air at the moment.
I got one of the PS caps in yesterday. I was on very limited time so I unfortunately had no time to do another. Hopefully tomorrow, I can clear some time to get more done. I will have to do a little drilling to get one of the PS cap mounts to work right. No Biggie. Then after that, all i have to change are the input Rs and caps, and finished making the plate to put the input jacks on!
It's close! Did I mention I hate point to point wiring! At least i have a solder sucker. That makes things much easier than using that woven copper string to rove solder.
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MikeS
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« Reply #85 on: March 20, 2008, 12:59:41 am » |
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I felt the same way when I first started point to point wiring. Especially de-soldering some old 45 year old mess, with cooked solder joints, crumbly solder, dirt, wax, and oils. It's a sick PITA mess.....
Use the solder sucker to get the majority of the solder, and then wick up the rest with the solder braid.
When you are de-soldering, use a shitty tip and keep it clean and tinned. That old solder trashes tips, and you will more than likely tag some insulation.
Keeping the tip fresh will aid with heat transfer. You wanna get in there, get the joint melted, and suck it out as quick as you can.
The more practice, the quicker you will get at it. Sometimes I want to save a resistor for example, and that's where it pays to be fast. If the joint is getting too hot, let it cool off for a couple minutes.
Then there is the infamous resistor or cap lead wrapped 50 times around a socket pin. And once you get all the solder sucked/wicked out, you still have to unwrap the lead. Fuck! Broke a lead....Fuck! Broke a pin!
Changing a pin on a nine pin socket is a bitch.....Octals are easy...
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Forceaudio
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