Showing posts with label Time. Show all posts
Showing posts with label Time. Show all posts
Sunday, 26 March 2017
Auto Sound Systems One Piece at a Time
Those who are in the market for auto sound systems are probably well aware of the many decisions that need to be made throughout the process. Gone are the days when you went in, pointed to a box and walked out with all the pieces, parts, and components you would ever need for a really kickin' sound. The truth of the matter is that there are many pieces and parts that work together in order to create the ultimate sound system and everyone seems to have different requirements, styles, tastes, and budgets to work with.
Because of this, many manufacturers of auto sound systems have wised up to the fact that some people will buy the components they need to create the sound system of their dreams piece by piece as budgets allow. This is actually a very intelligent way for customers on a budget to buy the sound system they are hoping to some day have. As a result you will find that speakers, amplifiers, sub woofers, and the actual stereo are often sold separately and at very reasonable prices.Most of us hate living within limited budgets but understand that often in life it is a necessary evil. Living on a budget is not such a terrible thing really. If we had everything we wanted, what on earth would there be to look forward to? At least that is what I keep telling myself. I, however, seem to be the queen of budget living and bargain hunting. I love little more in life than finding a great deal on an item I've had my eye on for quite a while and hate little more than finding it cheaper once I've purchased it. As such, I tend to invest a great deal of time researching any major purchase before taking the plunge. A good auto sound system by this I mean good quality, minimal features is going to run (total package and installation) at least $1,000 with many costing a good deal more than that.
That doesn't mean you need to have a thousand bucks lying around the house in order to begin building your auto sound system. You can buy a decent set of speakers for around $200-$260 if you desire. You can find sets at lower prices, but this is the price for a fairly decent set of speakers that should serve you well. Keep in mind that you could very easily spend a lot more than this on speakers if you aren't careful. Living on a budget means you have to make some sacrifices along the way in order to have the things you want in life. Buy the speakers and have them installed (if you can do it or your know someone who can, this will save a lot of time and money).
Once you have the first component, whichever one that may be (that choice is entirely up to you and largely dependent on your personal tastes and which need replacing worse in the vehicle you own) you can begin saving towards the next. You should also consider asking friends and family (who would like to know what to get you for the holidays) to help you reach your smaller goals along the way. Most people are glad to help with specific items if they know what those items are. The point is that this isn't an all or nothing proposition. Take small steps towards your prize and you will find that you are constantly getting one step closer.
Thursday, 29 December 2016
Multi Switching System with automatic Time Delay Off MSTDO
Energy conservation is the prime purpose of the design MSTDO. One particular application of the MSTDO is pressing of stairway lamps in a multi-storey building. When one desires to reach a certain floor level using the stairway, see figure below (A)
, he will return on the stairway lamps (L1,L2,L3…Ln) by pressing any one of the stairways push button switches (S1,S2,S3…N3). A sufficient time is allowed for him to reach his desire floor level destination. He need not turn off or push any switches to turn off the stairway lamp. The stairway lamp will be automatically turn off.


Readmore → Multi Switching System with automatic Time Delay Off MSTDO
(A) Push button switches and lamps installed in the stairway of a multi-storey building.

Control Operation
Referring to figure below (B), the neon lamps (N1,N2,N3…Nn) together with push button switches (S1,S2,S3…Sn) respectively installed in each stairway level are initially lighted on. The neon lamps are guide someone to reach on the stairway switches especially at night time. The stairway lamp (L1,L2,L3…Ln). Contact C (11-12)n will open to de-energize (light-off) condition.
Pressing any one of the stairway switches (S1,S2,S3…Sn) will energize the timer TR ( 2-7) and contactor C. Normally open instantaneous contact TR (1-3) will close to maintain the timer (2-7) and contactor C continuously energized even the press push button is stop. Contact C (1-2,3-4,5-6) will close to energized the stairway lamps L1,L2,L3…Ln) contact C (11-12) will open to de-energized the neon lamps (N1,N2,N3…Nn).
(B) Schematic diagram of the control circuit for “Multi Switching System with Automatic Time Delay Off”.

After several minute, the time sufficiently set to allow a person travel from the lowest to the highest floor level, the normally closed time delay contact TR (8-5) will open to de-energized the timer TR (2-7) and contactor C. Contacts C (1-2,3-4.5-6) will open to de-energized ,the stairway lamps (L1,L2,L3..Ln). Contact C ( 11-12) will close to its initial condition to energized the neon lamps (N1,N2,N3..Nn). Delay contact TR (8-5) will close and instantaneous contact TR (1-3) will open.If it is desire again to energize the stairway lamps (L1,L2,L3…Ln) one has to press again any one of the stairway way push button switches (S1,S2,S3…Sn).
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