circuit coll

The Figure Shows The Ring System Of Electric Wiring Wiring Starts.



Solar Powered House Wiring.



Slim Films House Illustrations.



House Wiring Dsl By Kissel.



Electrical Wiring In The Home Existing Nutone 665rsp Wiring.



Home Wiring Video Distribution Catv Tv Dbs.



House Plans And Home Designs Free Blog Archive Home Wiring.



Italy Rome Weather Density Of 40 Sodium Hydroxide Solution.



Home Wiring Video Distribution Catv.



New Home For Smart Cabling Or Integrate Cabling In Your Existing Home.

This electronic cricket is a present for Kids. This simple battery powered circuit can be used to play Cricket Match with your friends. Each LED in the circuit indicates various status of the cricket match like Sixer, Run out, Catch etc.
The Circuit uses two ICs ,one in the Astable mode and the second in the display driver mode. IC1 is wired as an Astable Multivibrator with the timing elements R1, R2 and C1.

With the shown values of these components very fast output pulses are generated from the Astable. Output from IC1 passes into the input of IC2 which is the popular Johnson Decade counter CD4017. It has 10 outputs. Of these 8 outputs are used. Output 9 ( pin9) is tied to the reset pin 15 to repeat the cycle. When the input pin 14 of IC2 gets low to high pluses, its output turns high one by one.

Resistor R3 keeps the input of IC2 low in stand by state to avoid false When the Push Switch S1 is pressed momentarily, the Astable operates and all the LEDs run very fast sequentially. When S1 is released, any one of the LED stands lit which indicates the status of the match. For example, if LED D7 remains lit, it indicates Sixer and if LED 8 remains lit, it indicates Catch out.
Label each LED for its status as shown in the diagram. Pressing of S1 simulates Bowling and Running LEDs indicates running of Batsman.

If you want to get a sense of how far the electric car market has really come, its instructive to read "Foreign Trade in Electric Vehicles," an article available on the New York Times Website.
In glowing terms, the article describes the future of electric cars. The vehicle "has long been recognized as the ideal solution" and is "cleaner and quieter" than other cars, as well as "more economical." The article also praises the electric vehicle (EV) battery. "It is simple, light, easy to take care of and far more efficient than the old lead battery," and the new battery "solves the problem of electric transportation."
An Edison storage battery in test setup, from the 1916 monograph "The Edison Alkaline Storage Battery," by the technical staff of the Edison Storage Battery Co.
The article is dated Nov. 12, 1911 -- 100 years ago this month.
Its hard to look at the article and not wonder how far weve come. Yes, the EV is back. Nissan has its Leaf. Ford has two EVs coming out soon. General Motors has announced the Spark EV and has the Chevy Volt, an electric car that burns gasoline part of the time. Tesla plans to roll out the Model S soon and is working with Toyota on an electric RAV4. Mitsubishi has its i MiEV. Even DeLorean has announced an electric car.
But the EV battery... has it really advanced much in the past 100 years? In a 1998 Design News article, battery makers discussed the creation of a lithium-ion battery with an energy density of 90Wh/kg. Thirteen years later, the Nissan Leaf battery is rated at 140Wh/kg -- a 55% increase. Thats not bad, but is it enough to make the EV battery a serious competitor with gasoline, which offers 80 times as much energy and a five-minute refueling capability?
Moreover, theres the issue of cost. In the 1998 Design News article, engineers set a target of $100/kWh to make EV batteries more competitive. Today, the cost figure still hovers between $800 and $1,000/kWh.
Because the costs are so high, most EV makers are using the higher energy densities to reduce the size of their batteries. Instead of a bulky 900-pound unit, theyre employing higher-energy packs of about 400 or 500 pounds. But the flip side of that strategy is that EV range hasnt changed much. If we go back to the 1998 Design News article, we see the ranges as follows:

    Chrysler Epic minivan: 68 miles.
    Ford Ranger EV: 58 miles.
    GM EV1: 90 miles.
    GM S-10 electric pickup: 45 miles.
    Toyota RAV4 EV: 118 miles.

Now contrast that with todays Nissan Leaf. Nissan says its 2011 Leaf travels 100 miles between charges. (The EPA rates it at 73.)
Many EV proponents have explanations for all this. A popular one is the "big oil conspiracy." According to this logic, oil executives have conspired with automakers to suppress development of EVs over the years. Numerous Websites are dedicated to explaining this conspiracy. However, they have not explained why our universities have had limited luck in creating a revolutionary battery over the past 100 years.
The truth is that the EVs real gains have been in speed and performance. On drag strips around the country, EV converters are turning quarter-mile times as low as 10 seconds using old Ford Pintos and Datsuns. The old GM EV1 was said to have hit a speed of more than 180mph, and the White Lightning racing EV reached 245mph. If Thomas Edison (who invented the battery discussed in the 1911 New York Times article) could see the performance of todays EVs, hed be astounded.
Still, Edison might be equally surprised by the lack of advancement in the area of battery energy. Many potential buyers are still turned off, not only by the cost, but by the pure EVs inability to make long trips. Bill Reinert, national manager of advanced technology vehicles for Toyota, said it best this year, when he told us: "Even if Im covered 90% of the time, Im probably unlikely to make a [buying] decision that leaves me uncovered 10% of the time."
Obviously, researchers are working on the energy issue, but their efforts would be best flavored with a little public patience. If the 100-year-old New York Times article teaches us anything, its that vehicle electrification could still be a long, arduous journey.

This is a circuit which the status of the output pins of a Flip Flop IC can be toggled by using sound. A condenser microphone is used for picking up the sound.


The first two opamps in the IC1 LM 324 is used to amplify the sound picked by the condenser microphone. The third opamp inside LM 324 is wired as a level detector. When ever the voltage produced due to sound have a level more than that of the reference voltage at pin 5 of the third opamp, its output (pin 7) goes high, triggering the flip flop IC1 CD 4027.As a result the state of the output pins of CD 4027 ( pin 1 & pin 2) toggles for each burst of sound

Notes.

* The circuit can be powered from three 1.5 V cells in series.
* The ICs must be mounted on holders.
* The mic M1 is a condenser mic.
* The sensitivity of the circuit can be adjusted by varying the preset R9.
* Assemble the circuit on a good quality PCB.
* All capacitors must be rated 10V.

By means of a Relay, employed to drive a water pump, this circuit provides automatic level control of a water reservoir or well. The circuit can be used also with non-metal tanks, provided a third steel rod having about the same height of the tank will be added and connected to the circuits negative ground.