مقاله داستان پیامک عکس سرگرمی تفریح

How to Maintain electric battery steam-powered Quartz clock


 confirm the metal contacts within the battery holder don't seem to be unsound. The spick-and-span battery you set in won't fix the matter if the metal contacts area unit dirty. If the metal isn't shiny and clean then scrape it victimisation sandpaper (220 grit or there-about can work fine). If you do not have sandpaper then you'll be able to use alittle flat-bladed screw driver or different 'pointy' metal tool. If this fixes the matter, then you have got gotten off the hook within the best doable means.
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    Check the static magnet. If the matter still persists, then the Lavet sort stepper in your Quartz clock in all probability features a slightly misaligned static magnet, (i.e., the rotor). you would like to maneuver the magnet back to the right position. So, you have ne'er detected of this thing? move to Wikipedia.com and browse the article on "Lavet sort stepping motor".
        Please note that this text solely shows a super-small stepper motor like is employed in a very wrist-watch. The one in your clock is way larger and easier to figure on. strive to not let yourself be intimidated. it's not that tough.
   
    Perform a straightforward take a look at to verify that your Quartz clock has this sort of drawback. Lay your clock on a flat table with the face of the clock inform up at the ceiling. See if the used features a drawback wherever it starts and stops or maybe stops fully. If so, then it's possible that the little static magnet has slipped backwards and is not any longer within the same horizontal plane because the metal of the magnet.
 this is often currently the second a part of this straightforward test: Flip the clock over so the force of gravity can pull the insufficient magnet back to its correct position. The face of the clock can currently be facing down towards the ground.
        If your table is created out of glass then you'll be able to sit on the ground and appearance up through all-time low of the table to envision if your clock is running properly. Or, you'll be able to simply choose the enter and hold it higher than your head to seem at it. you would like to stay it within the same horizontal downward facing position. If your clock works fine within the downward position however not within the upward position, then you have got a misaligned magnet.
   
 take away the insufficient black plastic box from the rear of your clock. this is often the box that holds the AA battery within the back and therefore the clock hands on the front. it's referred to as a stepping-type clock movement. To do this, begin by removing the clear plastic cowl on the front of the clock. it always has three plastic tabs or indents round the outer reaches. See if you'll be able to find wherever these three tabs area unit.

    Use alittle flat screwdriver to carefully pry these three tabs loose and take away the clear plastic front cowl.

    Gently take away the three clock hands, (the used, the hand, and so the hour hand). simply pull outward (on one hand at a time) and that they can pop off. place them in a very tiny instrumentation off to the aspect to stay them safe. strive to not drop them on the ground and particularly to not tread on them.

    On the rear of your clock, there area unit two massive black plastic tabs or hooks that firmly mount the clock movement to the rear of the clock. Gently pry these two tabs outward simply enough to permit you to get rid of the clock movement from the rear of your clock.

 take away the battery.

    Open up the clock movement and appearance within. to try and do this you would like to get rid of the black plastic cowl on the rear of your clock movement. Be careful. it's three unleash tabs, not 2. there's a hard-to-see tab within the middle of the battery compartment. strive to not break any of those tabs as a result of you would like them to carry your clock movement along. Gently take away the rear cowl and appearance within. If any of the insufficient white plastic gears have fallen out of their correct position, then place them back.

 inform yourself with the components within your clock movement.
        See {the little|the tiny|the tiny|the insufficient|the limited|the miscroscopic} card? There area unit two terribly small copper wires that connect this circuit board to a wire coil mounted beneath. strive to not break these wires. they're solely zero.003 inches in diameter and area unit terribly fragile. Please notice that the coil of wire is wrapped around one leg of a comparatively massive "U" formed piece of flat metal. These two items along type associate degree magnet.
 once electrical phenomenon flows within the coil of wire then it makes the iron-alloy metal core become magnetic. there's associate degree air gap at the open finish of the "U". this is often wherever the insufficient static magnet goes. Together, these three components type a Levat sort stepper. The static magnet is created within the form of a toroid, (or donut).
 hooked up to at least one aspect of the magnet could be a Pieris rapae plastic gear with teeth on that. it's referred to as a rotor as a result of it "rotates", (i.e., it spins around in a circle sort of a bicycle tire). there's associate degree shaft or very little plastic rod that goes at ninety degrees all through the middle of our magnetic toroid. the insufficient magnet should be lined up right within the middle of the flat metal that surrounds it, (i.e., the electromagnet), alternatively our very little motor does not run okay.
        One finish of this small plastic shaft for our rotor goes into slightly hole that is found within the black plastic cowl that you took off. this small hole is just too deep! this is often the complete drawback. we want to scale back the depth of this hole in a very precise means. Doing thus can possible change the clock to figure dead for several years to return. The difficult question here is "How can we do this? however can we live or somehow confirm simply precisely however deep this hole ought to be? conjointly, however can we then stock up all-time low of this hole in a very precise means, (to within a couple of thousandth's of associate degree inch)?"

 check that that you have situated the precise hole within the back cowl that's meant for holding the stepper-motor rotor in situ. Open up the outlet so it goes all the means through. strive to not use alittle drill. you would possibly scuff the perimeters of the outlet. this might considerably speed up the speed at that these plastic components would wear out.
 admit it. you wish your clock to endure a few years to return. this implies that your very little rotor are going to be spinning in situ and rubbing against the within of this hole day and night for several years. For long life, it's necessary that at the places wherever plastic rubs up against plastic that each surfaces ought to be terribly sleek.
        No, a drill isn't suggested. The necessary issue is that it's created out of hardened steel which the tip. The plastic wall at the rear of this hole is barely concerning 1/64 th of an in. thick. simply pushing on that (from within the hole) with the right variety of sharp, pointy metal tool can poke a hole all the means through.
 the precise size of this hole could vary from manufacturer to manufacturer, thus it's within the vary of zero.025 to 0.050 inches in diameter. Once you have poked a hole through the rear wall from the within, then flip the rear cowl around and clean it up from the surface. you wish the outlet to be nicely opened-up so you'll be able to get at it from the rear, (while the clock is running in a very face-down position).
 you're attending to place glue down this hole, a special sort of glue. it's referred to as "Plastic Fusion" and you purchase it at a store for HVAC referred to as Grainger's. (Do a Google search on the net to search out close toest|the closest} Grainger's store near you.
        Also, you would like sensible air ventilation as a result of the fumes from this glue area unit virulent. scan the cautions on the rear label.) it's a 2-part glue and is extremely thick. you wish the glue to fill the top of this hole no end the rotor from spinning. Use car gasoline on the tip of the rotor shaft shaft so the glue wouldn't persist with the rotor and it might be liberated to keep spinning. it's vital that the clock run and keep running the complete time that this glue is drying.
 you wish the glue to stay to the rear cowl of your clock movement however to not the rotor itself. to try and do this you would like to take care to not place oil on the surface of the rear cowl close to the outlet. However, you are doing need a bit of oil down within the hole on the tip of the rotor shaft shaft. The safest thanks to management wherever the oil will and does not go is as follows. Before swing the rear cowl on, dip the tip of the rotor shaft shaft into slightly gasoline. Wipe off most of the oil by gently touching it to a clean, dry surface many times. Use the table prime of my work bench. place the rotor back within the stepper.
        Be terribly careful that the shaft shaft of the rotor is inform straight up and down and not off to the aspect slightly bit. The rotor itself could be a very little magnet and therefore the metal it sits next to is additionally slightly magnetic. the key to creating the rotor arise straight is to rotate it by forty five degrees or ninety degrees so its own field is correctly aligned with the residual magnetic fields of the 2 items of metal on either aspect of the rotor. simply play with it, you will get it. If the rotor shaft shaft isn't straight up and down after you place the rear cowl on, then you may break one thing, (the very little shaft socket towards the front of the clock). it's doable to mend a chance like this however it's terribly fussy. simply take care and do not break it, OK?

    Gently place the rear cowl on whereas keeping the clock movement in a very face-down position. Oil could try and kick off the outlet. Gently dab it off to stay the encircling space dry. you'll a lot of highly to|favor to|opt to} use one thing more applicable, sort of a rag or paper.

 place the battery within the clock so it runs. you'll need to briefly place the used back on the clock to verify that it's running properly whereas in a very face-down position. Take the used off once more as a result of it gets within the means whereas you're making an attempt to try and do the gluing. strive victimisation spool of solder (because it's a hole within the middle), as an area wherever you'll be able to set the clock movement down in a very face-down position. you'll have another item, (such as slightly wood board with a hole in it), that's convenient for you.

 error your 2-part glue and gently push slightly little bit of it down the outlet. This last half is a lot of art than science. Use your best judgement. it's higher to err on the aspect of deficient glue down the outlet instead of an excessive amount of.

 place an enormous chunk of glue( ساعت دیواری طرح قهوه )  round the whole space. the insufficient chunk of glue down the outlet has nothing to stay to as a result of the oil. What holds it in situ is that the massive chunk of glue. it's vital that the clock keeps running for the complete time that the glue is drying. It takes the glue concerning associate degree hour or two to dry.