Comments by "ron black" (@ronblack7870) on "Technology Connections" channel.

  1. there was a toronto politician way back that said " we'll jump off that bridge when we get to it " . i have liked that since the first time i heard it.
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  2. yes we had 16 cameras set up in our manufacturing plant that used internet to work. then the company went out of business and we couldn't use the cameras for a while. luckily my IT guy was able to get around it . we lost some features but he got the cameras working and recording again. but now we need to add more cameras so have to buy a new system.
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  3. are you using E= MC^2 ? otherwise what do you mean?
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  4. the tipping over will cut the airflow and the limit switch will kick in.
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  5. the wire gauge numbers are the way they are because of the number of dies that are used to draw them. if you start with a thick rod and pull it through a die with a smaller hole then the wire gets smaller in dia. you can only do a certain percentage shrinking. so you have to pull it through more dies. so smaller gauge wire takes more passes to shrink it down to the smaller diameter. that's why a higher number is a thinner wire.
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  6.  @ICasinI  wrong
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  7. yup he used a fancy kettle instead of one where the base is rolled all around the edges to make that lip.
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  8.  @nottelling7785  no that was never the issue. Steve Lehto wrote a book about the turbine car. they used a lot of fuel so mileage was bad. a turbine engine is only efficient at full throttle giving lots of power. at partial throttle it uses almost as much fuel.
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  9. 66 that's way too warm foe me . i leave the house at 10 am and set the thermostat to 72. when i get home around midnight i put it down to 62. i like it cold when i sleep. at least half the time i get home and it is under 70 so the ac didn't run all day. i also put in a 16 seer ac unit at extra cost mainly because it's really quiet. i get my power from niagara falls so it's pretty much green.
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  10.  @aaronbrandenburg2441  this must be a cruel joke. ever hear of punctuation
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  11. i favor pin up which is upside down . and not for the reason most people think. i have a factory and most plugs are up at least 3 feet off the ground. so if someone steps on the cord the plug will pivot out. if the pin is on bottom it will break off . if the pin is on top the plug will pull out but usually the pin does not break off.
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  12. i had 2 compact cfl's i bought around 2002 at grainger . they we regular screw in but the tubes were u shaped straight up and down not twisted.they were pretty new back then and cost about 20$ each. i had them in 2 floor lamps in my apt. they were the delay start type that's all they had . well they did end up lasting 18 yrs so they did save me money. when the swirly ones came out i used them in a chandelier upside down. none lasted more than 3 -6 months even though they were low power 40 watt equivalent. now i use led warm white.
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  13. if you want to talk conspiracy look at companies that now only sell software as a service. used to be you buy software and that's it. now you have to pay every year for a license . like we bought a ferroarm measuring system years ago. we bought the software for 5k. well they no longer sell it and in order to re certify the measuring device we have to subscribe to the new software. and we have to re certify in order to comply with ISO certification.
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  14. thhn wire is actually derated in 14 and 12 gauge. meaning they can actually handle more than 15 and 20 amps but the code only allows them to be protected up to 15 and 20 amps. the insulation is rated to 90 deg C. now i don't know what insulation is on the cheap extension cords.
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  15. awnings are the equivalent of men's hats. almost no one uses them anymore
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  16. LED lighting is only possible by the exhaustive work of 1 japanese researcher who spent years perfecting the blue LED . it's a great video by veratasium . it worth watching . he did it a few months ago. the guy went against his bosses and after years of work his invention earned his employer hundreds of millions . he got like 50 bucks bonus. he finally quit and went to work with CREE as a consultant. he sued and in the end got 8 million but that all went to legal fees. the lawyers always get the money. for those wondering white light is made of blue red and yellow leds. without the blue you can't have white light.
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  17.  @Kubistonek  clothes washers have concrete for stability not dishwashers since dishwashers don't have a spinning tub that can go out of balance.
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  18. the dishwashing liquid also has bleach or equivalent that sanitizes the dishes
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  19. your handheld hair dryer blower has a limit switch as well . if you use it too close to your hair and run it on high after a little while it will shut it down.
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  20. induction heating is awesome. it's used extensively in heating steel . there a videos of a steel rod say 2 inches diameter goes through a coil turns red hot in like a few inches of travel at about 1 ft second.
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  21. i know electric forklift trucks are not grounded to the chassis. everything needs 2 wires. so on that beeper you can remove the tie in to the mounting bolts.
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  22. i remember when sealed beams cost less than 5 bucks . yah i'm old
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  23.  @wyattroncin941  designers just have to change things. it's like websites always changing and you have to relearn how to navigate. or software updates that change your interface. i hate that.
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  24. do they detect carbon monoxide as well? that's required now in my state.
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  25. yes it does. the footlights would be arranged at the edge of a stage near the audience. there would be a half globe with the open side to the actors. a flame would impinge on a piece of lime rock behind the globe. it would get so hot it would glow white. this light was reflected towards the actors. the actors were " in the limelight". so the, phrase of wanting to be in the limelight means wanting to be on stage
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  26. the 10 yrs is battery life as well. when i lived in apt i had to replace battery every 8 months on ave. lease said i had to supply the battery. maintenance checked every 6 months when they replaced the furnace air filter.
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  27. did you actually try the triac unit with compact florescent? once the triac is on there should be no noisy power . in a dimmer situation where it's constantly triggering at part of the waveform that it produces dirty power. they were using them like solid state relays .
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  28. bought a house 2 years ago. it was a remodel. had smoke detectors everywhere. i looked at them a while back to see if they needed a battery replacement . turns out they have a 10 yr battery non replaceable. so i am actually happy as 10 yrs is a long time. basement had a wired one as well for code. oh yah alpha radiation is non penetrating. it won't pass through a sht of paper.just don't crush it and inhale it or eat it.
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  29. other losses you missed are related to boiling the water . heat of vaporization. some of the water turns to steam/ vapor before it's a raging boil . boiling takes much more energy than heating up the water 540 cal/ g vs 1 cal/g / degree c so 80 cal from 20c to 100c. so 7 times as much . that is why steam is so scalding.there is a lot of energy in steam. that's why steam heating works . when it condenses into water at 100c it gives off 540 cal/ g.
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  30. natural gas is cheaper than electricity. so you don't address that at all.
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  31. ah yes chicago with the sideways elertical outlets . code makes them use conduit in the walls so the outlet boxes go sideways .
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  32. gasometers were big tanks with a floating top.the lid would push down on the gas which is what gave it pressure to go through pipes.
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  33. so you just showed the internet your license plates. should have blocked them
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  34. we just had a quote to replace all the lights in our factory . we already put fluorescent high outputs 10 years ago through a program that subsidized the cost. now the power company is doing it again with LED's. so we pay $40k and they replace all the light fixtures in our 200,000 sq ft factory with LED's . the actual cost is around $100k . the power company subsidizes it . they pay 60k of the cost. they project energy savings of $60k/ yr if we run 24/7 so our payback would actually be more like 2 years so it's a no brainer . they do this to reduce demand so they don't have to build more generating capacity. we use a lot of electricity so the savings is actually minor but worth it.
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  35. revolving doors are also about keeping the inside of the building pressurized vs outside. that stops air infiltration from outside. most big buildings are slightly pressurized inside vs outside.
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  36. tesla built the first chargers and put them in at their own expense. so why didn't the rest of the carmakers use the same connector as tesla.? you want tesla to retrofit every one of their chargers with the ccs connector?
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  37. the way you handle your plugs is like someone who makes full stops a stop sign. 99% 0f people pull the cord that comes out of the plug at least a bit if not entirely to pull it out. can't do that with UK style plugs. what a a pain in the ass
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  38. another big factor was JVC would license any manufacturer to produce vhs machines where as until the early 80's beta was only built by sony. so the vhs machines were cheaper due to more competition.
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  39.  @Paronak  slower due to 50% losses in the magnetron
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  40. i like ground pin up because it saves the ground pin from breaking off if someone steps on the cord and yanks it downward. in my 200,000 sq ft factory most of the outlets are up high like 4 feet off the ground on the building posts every 20 ft. so stepping on a portable cord happens. with the pin at the bottom the 2 flat prongs come out and the bottom pin rips out of the cord. if the pin is on top the plug comes out without breaking off the ground pin.
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  41. blast furnaces heat the incoming air blast in order to get the furnace hotter.they use typically 3 heat exchangers that are just a brickwork through which the exhaust goes. the bricks get hot .after a certain time they switch the flow so the hot brick heats the incoming air. there are always 2 brickworks getting heat and 1 that heats the incoming air.
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  42. i can see with conduit going sideways . because you run conduit from box to box. so if you don't turn it sideways there is no room to put a conduit on each side of the box.
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  43. should test some copper bottom pans as copper transfers heat quicker . also your cheap electric kettle is harder to clean the mineral deposits vs the fancy kettle.
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  44. that's why they use the door and seatbelt switches as sensors . less trouble than a seat .
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  45. the reason for running most of the machine on AC is that the contacts will last far far longer on AC than DC. when a set of contacts open that are feeding a coil a large pulse is generated . in AC 60 times per second the voltage goes to zero so the arc becomes self extinguishing . in DC that doesn't happen and the arc lasts far longer. i remember back in electrical motor lab in college in late 70's we set up circuits and had 50 amp DC breakers on . they looked very elaborate . the contacts would open and swing radially like 6 inches or more to break the arc
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