Ah. I see posting in the wee morning once again has robbed me of proofreading skills. Ah well. Primary, Secondary, it's all the same transformer, right? *chuckles*.
I wholly agree this fellow isn't exactly all there in the understanding or safety departments (Flybacks and IHVT's are different animals, and his rough and ready approach to microwaves would make me pause as well), but building Tesla Coils is a rite of passage for any serious geek. They're no more dangerous to make than any other line powered device. They produce a lot of RF noise from the spark gap in the primary (if so equipped, I've seen some Solid State switching models), and 30KV and up of high frequency electricity from the primary.
This high frequency energy mostly travels along the skin, an is (depending on the model) of a low enough current that the worst I've ever gotten is pinpricks from letting the energy ground itself to me directly (which is why most demonstrations use a metal object or thimbles). Having said that, I'm not willing to catch the output of one of the garage models, throwing around 1MV at the walls.
Heck, standing in water IMPROVES the effect. Of course, directions should be researched before attempting anything like this, but hey, people burn themselves with hot coffee by placing it in laps....
"While he DOES notice that the very strong - electromagnetic field does turn on and off other devices nearby, he still keeps fiddling with it."
Wonder if he's noticed the inductive heating effect on perpendicular bands of metal. Induction furnace in action:)
I've still got mine, and it gets use every Holloween, along with the Lighting Bulb, and the Jacobs Ladder (both of which use low frequency electricity, and so are shielded from inquisitive hands). I work with RF professionally, by the way, partly in result to my playing with Tesla Coils.
"- And, whats more, he also puts it on the net for other whackos to attempt, too. Great."
He's not the first. check out Powerlabs (Rail Guns, Can Crushers, Plasma Experiments). That "whacko" got a advanced education, thanks to his insanity. And I'm green with envy. Also, check almost every year of Popular Electronicsl at least one issue will have a Tesla Coil in it.
"For those people who aint really into tech: a microwave oven heats up water molecules. and a human body consists of mostly water.... go figure."
True enough. The frequency of microwaves used causes a resonance in the carbon-hydrogen bonds, affecting Fats, Sugers and Water (in that order). Having said that, it still follows the same laws as normal electromagnetic radiation, and drops off drastically as distance increases. It's interesting to actually measure the drop offs and emissions from damaged microwaves to see just how little escapes (I used to repair them, at one point).
My. Someone's had their "Snarky '0s" this morning:) Although I do concede the point you bring up; although the HD's were optional, and that particular machine may or may not have had one.
Remember the time frame. Hard Drives were external most of the time in those days. The IIe's didn't even HAVE the option. The 5.25 floppy drives were a couple hundred dollars apiece.
Re:"affecting literally millions of people."
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The Bank of Canada has pulled these bills at the request of the Royal Canadian Mounted Police, so you are correct, in that they're unavailable in a general sense. I have two of these bills on two seperate occasions (a motorcycle purchase, and a bond payout).
Not google itself, but the new additions the headline speaks of. Inclusion of these on the front page means they're no longer considered testing phase.
Unless they're antiquated enough to be using *real* switches (the mechanical kind) in the switching office, you'd be out of luck.
Normal ring voltage is around 90 VAC, so there's a bit of leeway there (220 being a 200% overload), and very likely you'd fry an individual cct, which would protect the network from the juice.
With the use of low forward drop diodes, and proper attention to peak current flows (and some IC Protectors/low value flameproof resistors), you can have a very decent pack.
Other solutions involve active current and voltage regulation, and would be overkill for this application.
Agreed. He's used 9V batteries, which carry the least amount of charge storage on the market in the standard sizes (one 9V is actually six smaller cells in series, meaning when one goes, so should the rest).
He'd do better with a "D" alk (and eat the space savings), or even "AA"'s.
I'm curious if you apply this same logic to other sensitive issues as well. Since it's not really a "Geek" argument, more of a social one.
Abortion, Speeding Tickets, Red Light Cameras, Turning Right on a Red Light (where applicable), etc. There are several things that are technically against the law, but you won't see it enforced.
No baiting intended, I just wonder when I see blanket statements made like you have...
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That's an interesting twist you've done (the SSL). Is that a feature of that particular router, or did you do some add-on's?
I'd have to agree (at leat in part)with the other posters. I concentrated on the centre section, because of the clutter.
Ah. I see posting in the wee morning once again has robbed me of proofreading skills. Ah well. Primary, Secondary, it's all the same transformer, right? *chuckles*.
"... but building a tesla coil ?"
:)
I wholly agree this fellow isn't exactly all there in the understanding or safety departments (Flybacks and IHVT's are different animals, and his rough and ready approach to microwaves would make me pause as well), but building Tesla Coils is a rite of passage for any serious geek. They're no more dangerous to make than any other line powered device. They produce a lot of RF noise from the spark gap in the primary (if so equipped, I've seen some Solid State switching models), and 30KV and up of high frequency electricity from the primary.
This high frequency energy mostly travels along the skin, an is (depending on the model) of a low enough current that the worst I've ever gotten is pinpricks from letting the energy ground itself to me directly (which is why most demonstrations use a metal object or thimbles). Having said that, I'm not willing to catch the output of one of the garage models, throwing around 1MV at the walls.
Heck, standing in water IMPROVES the effect. Of course, directions should be researched before attempting anything like this, but hey, people burn themselves with hot coffee by placing it in laps....
"While he DOES notice that the very strong - electromagnetic field does turn on and off other devices nearby, he still keeps fiddling with it."
Wonder if he's noticed the inductive heating effect on perpendicular bands of metal. Induction furnace in action:)
I've still got mine, and it gets use every Holloween, along with the Lighting Bulb, and the Jacobs Ladder (both of which use low frequency electricity, and so are shielded from inquisitive hands). I work with RF professionally, by the way, partly in result to my playing with Tesla Coils.
"- And, whats more, he also puts it on the net for other whackos to attempt, too. Great."
He's not the first. check out Powerlabs (Rail Guns, Can Crushers, Plasma Experiments). That "whacko" got a advanced education, thanks to his insanity. And I'm green with envy. Also, check almost every year of Popular Electronicsl at least one issue will have a Tesla Coil in it.
"For those people who aint really into tech: a microwave oven heats up water molecules. and a human body consists of mostly water....
go figure."
True enough. The frequency of microwaves used causes a resonance in the carbon-hydrogen bonds, affecting Fats, Sugers and Water (in that order). Having said that, it still follows the same laws as normal electromagnetic radiation, and drops off drastically as distance increases. It's interesting to actually measure the drop offs and emissions from damaged microwaves to see just how little escapes (I used to repair them, at one point).
Anyway, ramble time is over
My. Someone's had their "Snarky '0s" this morning :) Although I do concede the point you bring up; although the HD's were optional, and that particular machine may or may not have had one.
Remember the time frame. Hard Drives were external most of the time in those days. The IIe's didn't even HAVE the option. The 5.25 floppy drives were a couple hundred dollars apiece.
The Bank of Canada has pulled these bills at the request of the Royal Canadian Mounted Police, so you are correct, in that they're unavailable in a general sense. I have two of these bills on two seperate occasions (a motorcycle purchase, and a bond payout).
h aracter/1986_1000.htm/
http://www.bankofcanada.ca/en/banknotes/general/c
Heh. I've had to complete that same argument, and got the same response. Over six years ago, and it's still memorable.
Just a bit of clarification:
ISO 9001 and all its ilk have NOTHING to do with Manufacturing Quality, and EVERYTHING to do with Administrative Quality.
It is completely possible to meet ISO 9001 standards, and still turn out crap (I've watch it happen at two companies now).
The error code is just watchdogging the Referral address. Type in the URL manually, and lo, in all shiny goodness.
Sorry, looks like you're second:)
Very cool Tron suit. Ignore the AC, I'm sure he can manage to stuff beers in his throat, but that's about it.
Alas, it's true:)
Ditto for the other two. I not l33t *sobs*.
*laughs*
I had NO idea that existed. Thanks for the morning laugh.
Not google itself, but the new additions the headline speaks of. Inclusion of these on the front page means they're no longer considered testing phase.
Unless they're antiquated enough to be using *real* switches (the mechanical kind) in the switching office, you'd be out of luck.
Normal ring voltage is around 90 VAC, so there's a bit of leeway there (220 being a 200% overload), and very likely you'd fry an individual cct, which would protect the network from the juice.
It's not just this place. If you intend to worry that much, check out studies on Radon gas in the US, and other places in the world.
Your own home could be poisoning you.
Riight *snort*.
:)
Ok, that was good for a chuckle, all right. Much obliged
ok, I'll bite. What did they do last year?
Yes, Diodes are the easiest solution.
With the use of low forward drop diodes, and proper attention to peak current flows (and some IC Protectors/low value flameproof resistors), you can have a very decent pack.
Other solutions involve active current and voltage regulation, and would be overkill for this application.
Quick correction. The cells are in series (voltage potentials add 1.5V +1.5V etc.
Series connected cells supply higher voltage for the same current capacity. Parallel supplies the same voltage for higher current capacity.
Agreed. He's used 9V batteries, which carry the least amount of charge storage on the market in the standard sizes (one 9V is actually six smaller cells in series, meaning when one goes, so should the rest).
He'd do better with a "D" alk (and eat the space savings), or even "AA"'s.
A good source of exchange rates is www.xe.com
I'm curious if you apply this same logic to other sensitive issues as well. Since it's not really a "Geek" argument, more of a social one.
Abortion, Speeding Tickets, Red Light Cameras, Turning Right on a Red Light (where applicable), etc. There are several things that are technically against the law, but you won't see it enforced.
No baiting intended, I just wonder when I see blanket statements made like you have...
I was just thinking the same about a lot of American bands this morning :)