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Messages 1617 - 1647 of 2535   Oldest  |  < Older  |  Newer >  |  Newest
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1617
To do that normally you will have to go to a photo finish outfit that does their stuff in house or at least local. If you take it to Target,Walmart, Longs,...
D Ray East
drayegon
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Feb 1, 2008
11:22 pm
1618
I'm assembling my board & got to the "check low voltage power supply" The AC output from my transformer is 14vac. The desired voltage is 13.5vac, I didn't...
frank_colvin1
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Feb 3, 2008
3:43 am
1619
HI Frank, I'm surprised no one answered this yet, but that should be fine, as long as your motor doesn't draw too much current. That chip can handle up to 36...
James Sterner
jimmy163333
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Feb 4, 2008
3:37 pm
1620
If you do a search on Ebay, you'll find them as well, higher values too....
cutsgems
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Feb 5, 2008
7:50 pm
1621
What would happen if you used say a 220uf480vdc ?or even twice that at 440uf960vdc? 73 dray...
D Ray East
drayegon
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Feb 6, 2008
1:04 am
1622
frank_colvin1 wrote: ... Me too. Well, he said that they get recycled. Mostly as a matter of keeping them out of the landfills. He did say that he was paid...
Bob Engelhardt
rc_engelhardt
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Feb 7, 2008
1:24 pm
1623
Talking with the young lady at the local Wal-Mart photo finisher she said they get about 15cents per returned camera. I offered to pay but there is not a...
Ben Fleming
flyppc
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Feb 7, 2008
2:07 pm
1624
this morning i had to get some prescriptions at Walgreens. instead of the drive thru i went inside, i stopped at the photo department and asked about empty...
cary heestand
packrat0_15
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Feb 7, 2008
10:23 pm
1625
... Short it twice, just to be sure (I know too ! ) :-) Chris...
Chris Horne
chrisspiyda
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Feb 8, 2008
11:19 am
1626
If you have a pigtail around then here's another way: Throw a light bulb into the pigtail and run some alligator clip jumpers from it to the cap. In this...
Will Holding
holdwill2000
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Feb 8, 2008
12:26 pm
1627
Will, Does this work on something as powerful as a capacitor in an old 21 inch monitor, or an old computer? Or does the size of the light bulb have meaning,...
Stephen Auslender
ssculptor
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Feb 8, 2008
2:35 pm
1628
Hey just live vicariously through your using capacitors. Just wet two fingers and the skin will grow back if it arc's that much.<GG> Do remember to do this...
D Ray East
drayegon
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Feb 8, 2008
6:53 pm
1629
According to the book, the 120uF capacitor is a minimum value. I wnt with 230uF. It will affect the RC time constant. I think the benefit would be a little...
cutsgems
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Feb 13, 2008
1:37 am
1631
I am using a Maxon gearmotor for the servo, and it has a very wide operating voltage range. Practical values range from 6-48V. Since it is permissible to...
Gordon Heaton
chipmaker4130
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Feb 13, 2008
8:24 am
1632
I know the used photo flash caps are: 1.free, 2.what Ben used in the book. But Ben also(on page 32)calls them the WEAKEST LINK !! After much internet and...
cary heestand
packrat0_15
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Feb 16, 2008
11:19 pm
1633
I happened on an Adaptec 12v .25A Fan motor Taking a quick look at the board. I figure that I can tap into the system at U1 POS lead To TB2 with a jumper wire...
D Ray East
drayegon
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Feb 19, 2008
12:33 pm
1634
Dear Sir, I have built langois type edm from book. It is eroding fast enough. But the surface finish produced ar very poor. I changed the capacitors to lowest...
kulk_sd
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Feb 20, 2008
10:24 am
1635
Try lowering your voltage or increase your resistance! I use light bulbs to vary the resistance and a variable transformer for the voltage. I have used caps...
mike maxim
mammike
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Feb 20, 2008
12:50 pm
1636
You just need to create a free anonymous personal ad. Then you will be able to search people who have STD from all over the world. You can contact STD people,...
omarmichale
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Feb 20, 2008
3:53 pm
1637
about the best finish you can get with a NON-cnc(even a pulsed) EDM is going to look like a coarse bead blasted finish. it will never give a "polished"...
cary heestand
packrat0_15
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Feb 20, 2008
9:14 pm
1638
I am going out on a limb here but giving it thought that it is the plasma portion of the burning arc that does the work So like a plasma cutter the flow of oil...
D Ray East
drayegon
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Feb 21, 2008
12:55 am
1639
Ray all the capacitance values are Micro Farad MFDmfd/uF UF uf I can understand it might be confusing but is Micro Farad. Ben ... From: D Ray East...
Benjamin Nathan Fleming
flyppc
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Feb 21, 2008
1:03 am
1640
The newer books from ARRL and W5 Group make this difficult to deal with anymore. The xyl is working on her Extra or top class I guess we should call it now...
D Ray East
drayegon
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Feb 21, 2008
1:54 am
1641
I didn't see any pictures of any parts made with EDM machines built to the book. Any chance someone could post some links or photos? Allan...
fatboyatdesk
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Feb 21, 2008
2:44 am
1642
I'm pretty sure that the plasma arc produced by these machines is hotter than our Sun and the air just blows away the resultant melted metal. I don't think...
James Sterner
jimmy163333
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Feb 21, 2008
3:07 am
1643
James FYI the temp that a plasma machine gets too is probably equal to the same temp that an EDM machine also gets too. If you give it some thought Plasma...
D Ray East
drayegon
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Feb 21, 2008
4:04 am
1644
OK they can probably reach the same temperature, but the amount of heat output is nowhere near the same. Even a crummy plasma cutter can cut 1/16" thick...
James Sterner
jimmy163333
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Feb 21, 2008
5:33 am
1645
... Thats not actually true. A real EDM, with a finishing unit can achieve a very fine surface finish, well below what you would expect from a blast process...
steveastrouk
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Feb 21, 2008
2:01 pm
1646
... different than an arc! No it isn't, an arc IS a plasma discharge. Steve...
steveastrouk
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Feb 21, 2008
2:28 pm
1647
I agree. I've seen lathe insert holders that were too large for BXA holders so the dovetail slot was cut directly into them. That way they mount directly to...
Doug M
mccolld1
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Feb 21, 2008
3:46 pm
Messages 1617 - 1647 of 2535   Oldest  |  < Older  |  Newer >  |  Newest
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