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how to bypass dremel tool internal variable speed control?
msg wrote: john wrote: snip On older circuit boards when ic's were first introduced it was not recommended to use high pressure air on the boards. One of the main failure points on early chips was the bonding of the leads to the chip. This has since been solved but I still remember having boards fail after they were blown off with high pressure air. Interesting. What package types were susceptible to this (or did it matter)? Metal can TO-x ICs seemed to be the most reliable (RTL, HLL, some DTL, etc.) but I found a lot of early ceramic packages suffered from bad seals and permitted fungi to enter and grow inside (this in equipment that had never been wet, just from operating environmental conditions). These parts seemed also to lack proper passivation internally. Regards, Michael The ceramic Ic's were supposed to be more reliable but in fact as you said they had a higher failure rate. The sealant that they used was not too good since in many instances the tops would come off the IC . I bet the sealant was probably a little corrosive too. The first generation of IC's had a very high failure rate in compared to todays products. They were very heat sensitive and would act up above 100 degrees F even though the rating was higher. If I found one bad ic I would just change out every IC on the whole board that had the same date code and install a second generation ic with the same number. On some equipment you would automaticly change out a couple of parts and it was fixed. One company insisted on using the cheapest parts available but their advertising sold a lot of equipment in spite of the poor reliablity of the product. Today ic's and transistors , other than high power transistors, almost never fail unless something external blows them out. The industry has come a long way since the fifties when I first started in electronics. John |
how to bypass dremel tool internal variable speed control?
On Sun, 07 Oct 2007 07:40:47 -0700, Smitty Two
wrote: Thank god for gravity, or the vertical surfaces would be equally cluttered. Check the front of the refrigerator. Gerry :-)} London, Canada |
how to bypass dremel tool internal variable speed control?
"Gerald Miller" wrote in message ... On Sun, 07 Oct 2007 07:40:47 -0700, Smitty Two wrote: Thank god for gravity, or the vertical surfaces would be equally cluttered. Check the front of the refrigerator. Gerry :-)} London, Canada Then, thank God for magnetism, too. d8-) -- Ed Huntress |
how to bypass dremel tool internal variable speed control?
According to krw :
In article , clare at snyder.on.ca says... [ ... ] I alwys recommend at least 4 inches off the floor. Again, you SELECTIVELY read. The "dishwasher" was used for cleanup after fire and flood damage. One of the WORST culprits for screwing up electronis today is CIGARETTE SMOKE. Shouldn't be too bad today. Twenty years ago, when people smoked in office buildings... Even so, hardware is cheap. Labor isn't. Including the labor of re-entering or re-creating lost data. Of course, proper backup procedures can minimize this. Enjoy, DoN. -- Email: | Voice (all times): (703) 938-4564 (too) near Washington D.C. | http://www.d-and-d.com/dnichols/DoN.html --- Black Holes are where God is dividing by zero --- |
how to bypass dremel tool internal variable speed control?
krw wrote:
In article , says... krw wrote: I'll agree there. If it's going to get that dirty in a couple of years, perhaps one ought to clean house a little more often. OTOH, I learned not to put towers directly on the floor. They make good cat-hair vacuums. If you install a bigger fan it will either remove all of the cat's hair, or suck it into the computer. ;-) "It" being the cat, I assume you mean. ...makes too much noise. ;-) Then the fan isn't big enough! ;-) -- Service to my country? Been there, Done that, and I've got my DD214 to prove it. Member of DAV #85. Michael A. Terrell Central Florida |
how to bypass dremel tool internal variable speed control?
ChairmanOfTheBored wrote:
Either heal straps on an ESD matting or floor set-up, or wrist or smock strap versions. For real people that is a heel strap. You, on the other hand... -- Service to my country? Been there, Done that, and I've got my DD214 to prove it. Member of DAV #85. Michael A. Terrell Central Florida |
how to bypass dremel tool internal variable speed control?
On Fri, 05 Oct 2007 22:03:27 +0000, James Sweet wrote:
Static electricity and electronics don't mix, not to mention breaking things. Using a compressor to blow out computers may do more harm than good. I do it all the time, never had an issue with it. One thing I have learned though is to stay away from optical drives with the air, more than once I've stirred up dust which settled in and ruined the optics. I put a finger or thumb on the hub of the fan blades - it kind of scares me when they spin up to 1000's of RPM; some motors become generators when spun. Cheers! Rich |
how to bypass dremel tool internal variable speed control?
On Sun, 07 Oct 2007 03:22:47 -0400, Michael A. Terrell wrote:
clare, at, snyder.on.ca wrote: Never heard of a pressure regulator? 15psi air won't damage anything, and except in desert conditions moisture is generally more of a problem with shop air than static charge. I suppose you've never heard of a special nozzle made for electronics. It has a radioactive isotope to prevent static problems. Microdyne leased two of them for the production floor, because the manufacturer didn't sell them. Central Florida isn't a desert, but I suppose you've never seen a commercial air compressor with a dryer? Of course it needs to be dried; every day we have to empty the water out of the bottom of our compressor tank, probably because the vapor gets compressed right along with the air, and condenses out. But I'd think it would take some heroics to actually _dessicate_ the air; and I'd think that in FL there'd be enough ambient humidity to drain off any static. Cheers! Rich |
how to bypass dremel tool internal variable speed control?
Rich Grise wrote:
On Sun, 07 Oct 2007 03:22:47 -0400, Michael A. Terrell wrote: clare, at, snyder.on.ca wrote: Never heard of a pressure regulator? 15psi air won't damage anything, and except in desert conditions moisture is generally more of a problem with shop air than static charge. I suppose you've never heard of a special nozzle made for electronics. It has a radioactive isotope to prevent static problems. Microdyne leased two of them for the production floor, because the manufacturer didn't sell them. Central Florida isn't a desert, but I suppose you've never seen a commercial air compressor with a dryer? Of course it needs to be dried; every day we have to empty the water out of the bottom of our compressor tank, probably because the vapor gets compressed right along with the air, and condenses out. http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=40211 But I'd think it would take some heroics to actually _dessicate_ the air; and I'd think that in FL there'd be enough ambient humidity to drain off any static. If it's that humid in the plant, you have way too many problems with the reflow ovens and toombstoning. -- Service to my country? Been there, Done that, and I've got my DD214 to prove it. Member of DAV #85. Michael A. Terrell Central Florida |
how to bypass dremel tool internal variable speed control?
ChairmanOfTheBored wrote:
On Mon, 08 Oct 2007 04:18:09 -0400, "Michael A. Terrell" wrote: ChairmanOfTheBored wrote: Either heal straps on an ESD matting or floor set-up, or wrist or smock strap versions. For real people that is a heel strap. You, on the other hand... Spelling lames? Hahahah... You're a joke, boy. Try to stay on topic... wait.. you would have to actually know what is going on to do that... No, you are the joke, and a consistently lame speller. You love to point it out when others make mistakes, yet continue to make your own. -- Service to my country? Been there, Done that, and I've got my DD214 to prove it. Member of DAV #85. Michael A. Terrell Central Florida |
how to bypass dremel tool internal variable speed control?
On Mon, 08 Oct 2007 18:30:24 -0700, IAmTheSlime wrote:
On Mon, 08 Oct 2007 20:08:19 GMT, Rich Grise wrote: On Fri, 05 Oct 2007 22:03:27 +0000, James Sweet wrote: Static electricity and electronics don't mix, not to mention breaking things. Using a compressor to blow out computers may do more harm than good. I do it all the time, never had an issue with it. One thing I have learned though is to stay away from optical drives with the air, more than once I've stirred up dust which settled in and ruined the optics. I put a finger or thumb on the hub of the fan blades - it kind of scares me when they spin up to 1000's of RPM; some motors become generators when spun. Not when they plug into the wall, and have no permanent magnets in them or no energized field coils. Years ago, I saw a guy take a new muffin fan - just the fan - and spin it up with air. I saw an arc. Cheers! Rich |
how to bypass dremel tool internal variable speed control?
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how to bypass dremel tool internal variable speed control?
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how to bypass dremel tool internal variable speed control?
According to krw :
In article , says... According to krw : [ ... ] Shouldn't be too bad today. Twenty years ago, when people smoked in office buildings... Even so, hardware is cheap. Labor isn't. Including the labor of re-entering or re-creating lost data. Of course, proper backup procedures can minimize this. If the data is already lost, the repair tech isn't going to bring it back without a lot of heroics and luck. The bottom line is: don't lose data. It doesn't come back. Sometimes -- if the data has been entered from dead tree form, it may still be around and can be re-entered. And if it is calculated data from existing input -- that also can be re-calculated. But that costs a lot more (in time) than proper backups. :-) Enjoy, DoN. -- Email: | Voice (all times): (703) 938-4564 (too) near Washington D.C. | http://www.d-and-d.com/dnichols/DoN.html --- Black Holes are where God is dividing by zero --- |
how to bypass dremel tool internal variable speed control?
krw wrote:
In article , says... krw wrote: In article , says... If you install a bigger fan it will either remove all of the cat's hair, or suck it into the computer. ;-) "It" being the cat, I assume you mean. ...makes too much noise. ;-) Then the fan isn't big enough! ;-) Perhaps (noise(cat) + noise(fan)) is constant? ...like "all bicycles weigh 25lbs., if you include the lock". I was thinking that if the fan was big enough the cat wouldn't go near it, or would be blown out the exaust port, if it did. ;-) -- Service to my country? Been there, Done that, and I've got my DD214 to prove it. Member of DAV #85. Michael A. Terrell Central Florida |
how to bypass dremel tool internal variable speed control?
On Thu, 11 Oct 2007 08:37:43 -0400, "Michael A. Terrell"
wrote: krw wrote: In article , says... krw wrote: In article , says... If you install a bigger fan it will either remove all of the cat's hair, or suck it into the computer. ;-) "It" being the cat, I assume you mean. ...makes too much noise. ;-) Then the fan isn't big enough! ;-) Perhaps (noise(cat) + noise(fan)) is constant? ...like "all bicycles weigh 25lbs., if you include the lock". I was thinking that if the fan was big enough the cat wouldn't go near it, or would be blown out the exaust port, if it did. ;-) Last time I saw a cat go through a fan, it went in white and came out mostly red. Gerry :-)} London, Canada |
how to bypass dremel tool internal variable speed control?
On Thu, 11 Oct 2007 19:13:15 -0400, Gerald Miller
wrote: On Thu, 11 Oct 2007 08:37:43 -0400, "Michael A. Terrell" wrote: krw wrote: In article , says... krw wrote: In article , says... If you install a bigger fan it will either remove all of the cat's hair, or suck it into the computer. ;-) "It" being the cat, I assume you mean. ...makes too much noise. ;-) Then the fan isn't big enough! ;-) Perhaps (noise(cat) + noise(fan)) is constant? ...like "all bicycles weigh 25lbs., if you include the lock". I was thinking that if the fan was big enough the cat wouldn't go near it, or would be blown out the exaust port, if it did. ;-) Last time I saw a cat go through a fan, it went in white and came out mostly red. Gerry :-)} London, Canada Im bottle feeding a kitten (the other 2 didnt make it more than a day), not weaned yet, whose momma decided to sleep on that nice warm forklift engine. The client knew there were kittens and kept an eye on them for a couple days and realized that momma was not going to care for them. He thought she had abandoned them...until she started to stink. He found everything other than her head. Took a while to get most of the pieces out of the forklift though. They finally resorted to a pressure washer..... I figure they were without food or water for about 5 days. Two died, the third is a loud, hungry, obnoxious little asshole. Ive named her Hillary. Gunner |
how to bypass dremel tool internal variable speed control?
Gerald Miller wrote:
On Thu, 11 Oct 2007 08:37:43 -0400, "Michael A. Terrell" wrote: I was thinking that if the fan was big enough the cat wouldn't go near it, or would be blown out the exaust port, if it did. ;-) Last time I saw a cat go through a fan, it went in white and came out mostly red. So, cats can qualify for the 'Darwin Award', too? :( -- Service to my country? Been there, Done that, and I've got my DD214 to prove it. Member of DAV #85. Michael A. Terrell Central Florida |
how to bypass dremel tool internal variable speed control?
Gunner wrote:
Im bottle feeding a kitten (the other 2 didnt make it more than a day), not weaned yet, whose momma decided to sleep on that nice warm forklift engine. The client knew there were kittens and kept an eye on them for a couple days and realized that momma was not going to care for them. He thought she had abandoned them...until she started to stink. He found everything other than her head. Took a while to get most of the pieces out of the forklift though. They finally resorted to a pressure washer..... I figure they were without food or water for about 5 days. Two died, the third is a loud, hungry, obnoxious little asshole. I've named her Hillary. Gunner Good luck with her, Gunner. :) -- Service to my country? Been there, Done that, and I've got my DD214 to prove it. Member of DAV #85. Michael A. Terrell Central Florida |
how to bypass dremel tool internal variable speed control?
On Fri, 12 Oct 2007 07:09:44 -0400, "Michael A. Terrell"
wrote: Gunner wrote: Im bottle feeding a kitten (the other 2 didnt make it more than a day), not weaned yet, whose momma decided to sleep on that nice warm forklift engine. The client knew there were kittens and kept an eye on them for a couple days and realized that momma was not going to care for them. He thought she had abandoned them...until she started to stink. He found everything other than her head. Took a while to get most of the pieces out of the forklift though. They finally resorted to a pressure washer..... I figure they were without food or water for about 5 days. Two died, the third is a loud, hungry, obnoxious little asshole. I've named her Hillary. Gunner Good luck with her, Gunner. :) Got a really odd look the other day..working on a machine too, told the customer Id be right back, I needed to go feed the baby. He followed me out to my truck and within a couple minutes, he is standing there in the middle of the parking lot with a tiny baby bottle in one hand..feeding a hungry kitten in the other.each making baby noises at each other, and a big grin on his face as Hillary made bread on his hands, sucking on the bottle. Gunner |
how to bypass dremel tool internal variable speed control?
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how to bypass dremel tool internal variable speed control?
On Fri, 12 Oct 2007 06:25:10 -0400, "Michael A. Terrell"
wrote: Gerald Miller wrote: On Thu, 11 Oct 2007 08:37:43 -0400, "Michael A. Terrell" wrote: I was thinking that if the fan was big enough the cat wouldn't go near it, or would be blown out the exaust port, if it did. ;-) Last time I saw a cat go through a fan, it went in white and came out mostly red. So, cats can qualify for the 'Darwin Award', too? :( Sorry, no. Sentient and self aware thinking beings only. One of the key elements of earning a DA as I see it is doing something extremely stupid with the advance knowledge that it is extremely stupid, but you deliberately go ahead and do it anyway. "Here, hold my beer and watch this!" -- Bruce -- |
how to bypass dremel tool internal variable speed control?
In article ,
Bruce L. Bergman wrote: On Fri, 12 Oct 2007 06:25:10 -0400, "Michael A. Terrell" wrote: Gerald Miller wrote: On Thu, 11 Oct 2007 08:37:43 -0400, "Michael A. Terrell" wrote: I was thinking that if the fan was big enough the cat wouldn't go near it, or would be blown out the exaust port, if it did. ;-) Last time I saw a cat go through a fan, it went in white and came out mostly red. So, cats can qualify for the 'Darwin Award', too? :( Sorry, no. Sentient and self aware thinking beings only. Umm. Cats are all three. The problem is that it's hard to interview them. Joe Gwinn One of the key elements of earning a DA as I see it is doing something extremely stupid with the advance knowledge that it is extremely stupid, but you deliberately go ahead and do it anyway. "Here, hold my beer and watch this!" -- Bruce -- |
how to bypass dremel tool internal variable speed control?
On Mon, 15 Oct 2007 21:17:04 -0400, Joseph Gwinn
wrote: In article , Bruce L. Bergman wrote: On Fri, 12 Oct 2007 06:25:10 -0400, "Michael A. Terrell" wrote: Gerald Miller wrote: On Thu, 11 Oct 2007 08:37:43 -0400, "Michael A. Terrell" wrote: I was thinking that if the fan was big enough the cat wouldn't go near it, or would be blown out the exaust port, if it did. ;-) Last time I saw a cat go through a fan, it went in white and came out mostly red. So, cats can qualify for the 'Darwin Award', too? :( Sorry, no. Sentient and self aware thinking beings only. Umm. Cats are all three. The problem is that it's hard to interview them. Joe Gwinn Its easy to interview them. However...if they dont like you, or get bored...they wont tell you ****. Gunner One of the key elements of earning a DA as I see it is doing something extremely stupid with the advance knowledge that it is extremely stupid, but you deliberately go ahead and do it anyway. "Here, hold my beer and watch this!" -- Bruce -- |
how to bypass dremel tool internal variable speed control?
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how to bypass dremel tool internal variable speed control?
On Tue, 16 Oct 2007 18:39:22 -0400, krw wrote:
In article , says... Joseph Gwinn wrote: Umm. Cats are all three. The problem is that it's hard to interview them. Okay, maybe 'sentient' would be a better word than 'self-aware', but I still stand behind the statement. They are very good at asking for more food (demanding), and more pets! On their terms. Belly petting ONLY when Belly is authorized! When mine shows you his belly, don't believe it. It's bait! Only if you're a cheeken and give up too easy. I call their bluff if they try using claws - they get their paw slapped and a "No!" If I start with the belly rubbins I'm going to keep doing it, and they're going to damn well stop complaining and just sit there and enjoy it. And it never fails, thirty seconds later they're purring loud enough for CalTech to pick it up on the seismographs... The cats are the masters... we are at their beckon call! :-] Dogs have masters; cats have staff. Oh youbetcha! -- Bruce -- |
how to bypass dremel tool internal variable speed control?
ChairmanOfTheBored wrote:
You never met my twenty pound "George Orr" cat. He was an effective dreamer. This is the first reference to "Lathe of Heaven" I have encountered on Usenet (then again I haven't searched for one either ;) ). Regards, Michael |
how to bypass dremel tool internal variable speed control?
On Mon, 15 Oct 2007 22:51:27 -0700, Gunner Asch wrote:
On Mon, 15 Oct 2007 21:17:04 -0400, Joseph Gwinn Bruce L. Bergman wrote: On Fri, 12 Oct 2007 06:25:10 -0400, "Michael A. Terrell" Gerald Miller wrote: On Thu, 11 Oct 2007 08:37:43 -0400, "Michael A. Terrell" I was thinking that if the fan was big enough the cat wouldn't go near it, or would be blown out the exaust port, if it did. ;-) Last time I saw a cat go through a fan, it went in white and came out mostly red. So, cats can qualify for the 'Darwin Award', too? :( Sorry, no. Sentient and self aware thinking beings only. Umm. Cats are all three. The problem is that it's hard to interview them. Its easy to interview them. However...if they dont like you, or get bored...they wont tell you ****. Anthropomorphizing cats is a sign of serious mental illness. Hope This Helps! Rich |
how to bypass dremel tool internal variable speed control?
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how to bypass dremel tool internal variable speed control?
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how to bypass dremel tool internal variable speed control?
replying to Claude Desjardins, Tinydikswinger wrote:
120 psi hell if you are running the HF junkers have some fun and give em @ 180 -190psi ...They have a much diffrent sound at those pressures and the neighbors will all be over finding out jusy what the hell all that screaming is about. I usually run my high speed cutoffs and such that high but get good wheels because them Chinese garbage discs will wear out quick as all heck and they tend to fly apart at wellheck any speed so save yourself a trip to the ER and at least use good abrasives. Now party on fellers and lets also get them 7 1/4" saw cutoff wheels on them 4 1/2" angle grinders,they gyrate like no other and are only 1 hand operated then but its like supercharging your lil grinder. Rip **** and have fun -- for full context, visit https://www.polytechforum.com/metalw...rol-77099-.htm |
how to bypass dremel tool internal variable speed control?
13 years later......
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how to bypass dremel tool internal variable speed control?
In the Dremel's I've taken apart there are few components because it's triac speed control (light dimmer).
probably close to this: https://www.electroschematics.com/mo...or-with-triac/ A jumper between the two terminals other than the one going to T2 is all you have to do. if there is a number on the part. You jump MT1 to MT2. e.g. https://www.nteinc.com/specs/5600to5...nte5621_27.pdf All pin outs may not tbe the same. |
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