sci.electronics.repair@googlegroups.com

Google Groups

N_Cook <diverse@tcp.co.uk>: Nov 20 08:30PM A sort of slip clutch in a gear train that transmits torque until ther is a jam. Then at a preset back-torque a "ratchet" mechanism engages making a clicking noise as the drive side turns relatively freely to protect a motor etc and alerts a user to a problem.

Tim R <timothy42b@aol.com>: Nov 20 12:48PM -0800 On Monday, November 20, 2017 at 3:30:40 PM UTC-5, N_Cook wrote: > is a jam. Then at a preset back-torque a "ratchet" mechanism engages > making a clicking noise as the drive side turns relatively freely to > protect a motor etc and alerts a user to a problem.   That's how a torque wrench works, but I don't know the name of the mechanism.

whit3rd <whit3rd@gmail.com>: Nov 20 12:58PM -0800 On Monday, November 20, 2017 at 12:30:40 PM UTC-8, N_Cook wrote: > A sort of slip clutch in a gear train that transmits torque until ther > is a jam. Then at a preset back-torque a "ratchet" mechanism engages > making a clicking noise ...   In my imagination, I see a differential, with one output driving the load, and the other driving a bell, but secured with a brake.   Or, a shaft coupling with a shear pin, which makes a fuss when it breaks. Maybe a shear pin with a stinky mercaptan center?

Jon Elson <jmelson@wustl.edu>: Nov 20 03:11PM -0600 N_Cook wrote:   > is a jam. Then at a preset back-torque a "ratchet" mechanism engages > making a clicking noise as the drive side turns relatively freely to > protect a motor etc and alerts a user to a problem. Overload clutch?   Jon

etpm@whidbey.com: Nov 20 01:18PM -0800 >is a jam. Then at a preset back-torque a "ratchet" mechanism engages >making a clicking noise as the drive side turns relatively freely to >protect a motor etc and alerts a user to a problem. "Ball detent overload release" is one name for this type of clutch. Eric

"pfjw@aol.com" <pfjw@aol.com>: Nov 20 01:28PM -0800 > "Ball detent overload release" is one name for this type of clutch. > Eric   http://www.directindustry.com/industrial-manufacturer/ball-torque-limiter-148825.html   AKA "Ball Torque Limiter".   Peter Wieck Melrose Park, PA

John Robertson <spam@flippers.com>: Nov 20 03:08PM -0800 On 2017/11/20 12:30 PM, N_Cook wrote: > is a jam. Then at a preset back-torque a "ratchet" mechanism engages > making a clicking noise as the drive side turns relatively freely to > protect a motor etc and alerts a user to a problem.   Depending on how much torque you are talking about the ICE bubble hockey arcade games use a nylon slip clutch in their player gearboxes. This releases if the men are jammed and makes a ratcheting sound. They do wear out, but last years and they sell for around $15 for the entire gearbox.   https://www.icegame.com/category/22/super-chexx#parts   number SC3012X   John :-#)#   -- (Please post followups or tech inquiries to the USENET newsgroup) John's Jukes Ltd. MOVED to #7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3 (604)872-5757 (Pinballs, Jukes, Video Games) www.flippers.com "Old pinballers never die, they just flip out."

tschw10117@gmail.com: Nov 20 03:20PM -0800 On Monday, November 20, 2017 at 2:30:40 PM UTC-6, N_Cook wrote: > is a jam. Then at a preset back-torque a "ratchet" mechanism engages > making a clicking noise as the drive side turns relatively freely to > protect a motor etc and alerts a user to a problem.   Over-running clutch?

Jon Elson <elson@pico-systems.com>: Nov 20 09:18PM -0600 >> making a clicking noise as the drive side turns relatively freely to >> protect a motor etc and alerts a user to a problem.   > Over-running clutch?   No, an overrunning clutch allows it to slip in one direction and grab in the other. That is a different mechanism used for a different purpose.   Jon

Tim R <timothy42b@aol.com>: Nov 21 08:30AM -0800 On Monday, November 20, 2017 at 10:19:06 PM UTC-5, Jon Elson wrote:   > No, an overrunning clutch allows it to slip in one direction and grab in the > other. That is a different mechanism used for a different purpose.   > Jon   Like a bicycle freewheel.

RickiRick <RickiRick.1459fe89@diybanter.com>: Nov 21 03:27PM My air conditioner has broken again. Honestly, I fed up with it. I clean it regularly, but nevertheless, it has broken again at the third time... Can this small evaporative air cooler be the alternative to the air conditioner? Or is it too small and better to buy the new air conditioner?   '[image: https://cdn.bestadviser.in/reviews/65/cb/65cb5e7a666df0913a4fadd89b78bf26.jpg]' (https://www.bestadviser.in/evaporative-air-cooler)         -- RickiRick

"pfjw@aol.com" <pfjw@aol.com>: Nov 21 08:15AM -0800 On Tuesday, November 21, 2017 at 10:37:54 AM UTC-5, RickiRick wrote:   > Can this small evaporative air cooler be the alternative to the air > conditioner? Or is it too small and better to buy the new air > conditioner?   Evaporative coolers, AKA Swamp Coolers, are best in very dry climates. As you are aware, they operate by taking advantage of the phase-change of water going from a liquid to a gas - which has the unfortunate result of greatly increasing the local humidity. Further to this, as the local humidity increases, the working efficiency of a swamp-cooler decreases.   So, depending on where you are and what you need to cool, that little device can be very effective (desert-dry conditions and using it as a cooling fan), or it can be a major source of mold and mildew (anywhere in temperate or tropical conditions, or used indoors. Its sole advantage is that it is far cheaper to operate and is far simpler than a conventional AC unit.   So, it depends. Here in south-central PA, a swamp-cooler would grow mold before my eyes. And we put tablets in our AC drain pans to prevent Legionnaires' disease.   Peter Wieck Melrose Park, PA

Jeff Liebermann <jeffl@cruzio.com>: Nov 20 09:30AM -0800 On Mon, 20 Nov 2017 04:50:57 -1000, John Keiser <johnkeiser@juno.com> wrote:   >These are handy devices to measure the working capacity of the charger: >https://www.ebay.com/sch/sis.html?_nkw=Practical+USB+Charger+Current+Voltage+Detector+Battery+Tester+Volt+Meter+Ammeter&_id=321912291635&&_trksid=p2060353.m2749.l2658   >The cheapest ones have worked fine for me.   I have a few of those and use them for testing chargers and phones. Very handy. They're especially fun when I connect them all in series and notice that both the voltage and current readings are not even close to each other. If you're using one for measurements, rather than just fault finding, I suggest you make a calibration chart.   I also bought a USB adjustable load: <https://www.ebay.com/itm/282437868849> which is useful for testing if a charger can actually deliver the current printed on the label. Most will not or go into oscillation at the rated current. It's not the best quality instrument, but it works for the purpose intended.   -- Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558

"David Eather" <eather@tpg.com.au>: Nov 21 11:58AM +1000 > think either of the chargers have a USB host built in and the laptop > clearly does.   > I'm still stumped.   Some usb leads for chargers only run the +5 and Gnd - so they can't be used on PC's etc     -- The latest set of Shadow Broker tools shows the UK, USA, Canada, Australian and New Zealand spy agencies were hacking into domestic home routers. Who gave them permission to spy on our kids?

krw@notreal.com: Nov 20 09:26PM -0500 On Tue, 21 Nov 2017 11:58:18 +1000, "David Eather" <eather@tpg.com.au> wrote:     >> I'm still stumped.   >Some usb leads for chargers only run the +5 and Gnd - so they can't be >used on PC's etc   They're known as "charging cables", for the obvious reason. "Charging and download", or some such, have all the wires. They're bulkier, less flexible, so there is a reason for both.

rickman <gnuarm@gmail.com>: Nov 20 11:30PM -0500 John Keiser wrote on 11/20/2017 9:50 AM: > These are handy devices to measure the working capacity of the charger: > https://www.ebay.com/sch/sis.html?_nkw=Practical+USB+Charger+Current+Voltage+Detector+Battery+Tester+Volt+Meter+Ammeter&_id=321912291635&&_trksid=p2060353.m2749.l2658   > The cheapest ones have worked fine for me.   How do they measure the capacity of the charger? They measure the current drawn by the load and the voltage. I have one and when I used it with the phone and charger it indicated a voltage slightly over 5 volts and never registered a current unless the phone would allow charging to begin.   --   Rick C   Viewed the eclipse at Wintercrest Farms, on the centerline of totality since 1998

rickman <gnuarm@gmail.com>: Nov 20 11:32PM -0500 David Eather wrote on 11/20/2017 8:58 PM:   >> I'm still stumped.   > Some usb leads for chargers only run the +5 and Gnd - so they can't be used > on PC's etc   I'm using the same cable in all cases. Only the PC has any smarts attached and I'm not sure the phone even uses the data signals. The PC does make some noises like it might be connecting to the phone though, but I suppose it could be from the power drawn rather than the data signals. I don't know how complex the USB port is in my laptop.   --   Rick C   Viewed the eclipse at Wintercrest Farms, on the centerline of totality since 1998

Jasen Betts <jasen@xnet.co.nz>: Nov 21 07:44AM > Some usb leads for chargers only run the +5 and Gnd - so they can't be > used on PC's etc   They can (but probably should not) be used for charing from PCs, but cannot be used for data   -- This email has not been checked by half-arsed antivirus software

bruce2bowser@gmail.com: Nov 20 10:25PM -0800 On Monday, 6/12/17 at 10:18AM, Foxs Mercantile wrote:   > Information like this, however, is wasted on jurb6006 because he > already knows everything about everything. Until he doesn't. Then > his solution is to put a bullet in it, or blame the government.   And almost everyone else here is probably similarly-minded, but just doesn't say so.   Sometimes you just have to continue shutting-off and un-plugging things in your house (maybe even elsewhere, too) until you find the interference source. Always get the help-desk operator's name and number and give him/her your's, too (the story then tends to go in your favor drastically)

bruce2bowser@gmail.com: Nov 20 10:44PM -0800 >get Benjamin Moore. Even better is Pratt Lambert but they make >mostly bridge paint and shit like that, they might not have your >favorite color or texture.   And regardless of the brand, who's bothering to strip-down or pressure-wash the surface with soap and water?

John-Del <ohger1s@gmail.com>: Nov 20 10:56AM -0800 > Valid quibbles. However, the reality is that only about 1/3 of burglaries are reported.   Citation? Seems hard to believe...     > Point is that the average burglar is a pro, does extensive research ahead of the act, and is absolutely not looking for trouble. They don't walk into a neighborhood, pick a house at random and have-at.   You must have a more high class burglar where you are Peter. Most of the ones around here are pot heads looking for a quick score.   >>There was a robbery on the Main Line some time ago, where the team of burglars came in broad daylight, and while one group started to power-wash the house, the other group went inside and pretty much cleaned it out.   > Peter Wieck > Melrose Park, PA     Yeah, we get those too, but most home burglaries are nowhere near as sophisticated. To help your point, I'll venture that the average catch rate is far lower for the pro if you factor in the pot and crack heads who not only break down doors, but even do so when home owners are actually home and get caught in higher numbers.   Can I say "burgle" one more time??

"pfjw@aol.com" <pfjw@aol.com>: Nov 20 12:37PM -0800 On Monday, November 20, 2017 at 1:56:50 PM UTC-5, John-Del wrote:   > Citation? Seems hard to believe...   Sorry, it varies by region, and I pulled my region and mis-applied it.   Nationally, about 41% are unreported.   > You must have a more high class burglar where you are Peter. Most of the ones around here are pot heads looking for a quick score.   We had a rash of burglaries near our summer house, and 'they' got our house. Turned out to be the estranged nephew of our neighbor, who was stupid enough to leave mail addressed to him behind, and leave the swag - such as it was - at his aunt's house next door. We was caught, and in the process tried to run from the State Police. Not a good idea. And, he was on meth. Through him they found two meth-labs (relatively) nearby.   http://wnep.com/2014/02/19/puppies-rescued-from-meth-lab-in-columbia-county/     > Can I say "burgle" one more time??   Very likely.   Peter Wieck Melrose Park, PA

You received this digest because you're subscribed to updates for this group. You can change your settings on the group membership page. To unsubscribe from this group and stop receiving emails from it send an email to sci.electronics.repair+unsubscribe@googlegroups.com.