Question about Honeywell Heating & Cooling
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Posted on Jan 02, 2017
SOURCE: My digital alarm clock is fast
I'm not on this field of expertise but I could try giving you some tips. These cloks work by dividing the natural oscilations of a quartz cristal in the corresponding way to form "1 second". A quartz cristal like the one in your clock will oscilate at about 14080236 times per second. Your clock uses a specialised chip in order to count these oscilations and know they form "1 second". However, the problem is the following. These clocks doesn't compensate for frequency variation over the mains power line. You should always look firts at it's power ratings and determine if it requires 50Hz or 60Hz. Even if you use an adaptor to raise/lower the tension from 110 to 220 v or viceversa, this woun't correct the problem as the adaptor will leave the frequency unchanged. Unfortunately in order to make the required adjustments you woun't need a resistor or capacitor, but a whole bunch of them in order to make a frequency divider-convertor that's stable enough to give your clock a fixed time reference. One more thing, not all components have exactly the parameters noted on them. There's another thing called Tolerance. A 1Kilo Ohm resistor with 10% tolerance (most comon tolerance) can have any value with +/- 10% of it's noted parameters, and in this example, could have any value between 900 ohm - 1100 ohm. These clocks will need components with a very strict tolerance in order to have an acurate time reference. Note that they aren't atomic clocks, they simply use a larger chip that includes most of the clock, time reference, frequency analyser and divider. An atomic clock doesn't use quartz cristals, instead it relies on the natural oscilations of the very precise Cesium izotope atom. The rest of the atomic clock is made up in a similar way as usual clocks (more fixed and small tolerance of course :) ).
Posted on Jul 02, 2007
SOURCE: Breitling problem
This usually occur when the hairspring is disturbed ( some grease, dust particle, etc). Can be magnetized as well.
You need to find your nearest watch repairer and ask to overhaul your watch. After that it will run like new.
Posted on Jan 03, 2009
Most desktops require you to hold the off or power button down for at least 5 seconds, or more, before it will actually turn of the power. If you don't you won't get the desktop to turn off properly and when you try to turn it on again, you will get a message to the effect that the PC was not properly turned off last time, and it will give you the option to turn it on in Safe Mode, Safe with DOS prompt, or Safe with networking or ... finally, normal mode. If all you did was not turn the power off holding the button for a minimum of 5 seconds, then turning it on normaly is okay to do.
Posted on Jun 21, 2009
Compute the difference in clock-speeds, namely 90 seconds per hour.
Convert the units of time: 30 minutes becomes 180 seconds.
So, divide 180 by 90 to get '2', namely 2 hours after the 6 o'clock "start" time, which makes it 8 PM.
P.S. There is at least one error in the above solution. If you truly understand the solution, make the necessary correction, and submit the corrected "homework" to your teacher.
Posted on Jan 07, 2010
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1 Press CLOCK/TIMER.
The hour digits start flashing on the display.
2 Press UP or DOWN to adjust
the hour, then press CLOCK/
The minute digits start flashing.
• When you press and hold UP or
DOWN, the hour digit changes
3 Press UP or DOWN to adjust the
minute, then press CLOCK/TIMER.
The built-in clock starts.
• When you unplug the power cord or if a power failure occurs
The clock is reset to "AM 12:00" right away. If this happens, set
the clock again.
• The clock may gain or lose 1 to 2 minutes per month
If this happens, reset the clock.
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