Wednesday, June 12, 2013

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Posted in Arrangement, Art, Business

Low Voltage Alarm Circuit Schematic With explanation

This low voltage circuit can be used to monitor batteries and other volatile sources of current for problems. The circuit sounds an alarm and lights an LED, but can be interfaced to any number of other circuits for many different uses.Low Voltage Alarm Circuit

Parts


Part

Total Qty.

Description

Substitutions
R1, R321K 1/4W Resistor
R215K Pot
U11LM339 Op Amp IC
D111N5233B Zener Diode
D21LED
BZ11Piezo Buzzer
MISC1Board, wire, socket for IC

Notes

  1. The circuit will operate from 9V to 12V.
  2. Adjust R2 until the alarm goes off at the correct voltage.s
Source : aaroncake.net/
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7 Segment LED Counter Circuit With explanation

This simple counter can be used to count pulses, as the basis for a customer counter (like you see at the doors of some stores), or for anything else that may be counted. The circuit accepts any TTL compatible logic signal, and can be expanded easily (see Notes). 7 Segment LED Counter Circuit With explanation

Parts

Part
Total Qty.
Description
Substitutions
R1-R77470 Ohm 1/4 Watt Resistor
U1174LS90 TTL BCD Counter IC7490,74HC90
U2174LS47 TTL Seven Segment Display Driver IC7447,74HC47
DISP11Common Anode 7 Segment LED Display
MISC1Board, Sockets For ICs, Wire



Notes

  1. All pulses to be counted are to be TTL compatible. They should not exeed 5V and not fall below ground.
  2. You can add more digits by building a second (or third, or fourth, etc...) circuit and connecting the pin 11-6 junction of the 74LS90 and 74LS47 to pin 14 of the 74LS90 in the other circuit. You can keep expanding this way to as many digits as you want.
www.aaroncake.net
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Latest Touch Alarm System circuit schematic with explanation

Touch Alarm circuit is widely used for security, which is installed on the door. The advantages of this alarm is because the cost is cheap and difficult to detect by burglars / intruders. The following is an example of a touch of alarm circuit which is designed by Tony Van Roon.

Touch Alarm System circuit schematic

Components List:

R1 = 100K
R2 = 56K
R3 = 10M
R4 = 220K
P1 = 100K
D1 = 1N4004
T1 = 2N3904, or equivalent
U1 = 555 Timer*
C1 = 47μF/16V**
C2 = 33μF/16V**
Re1 = Relay***

Notes:

*The 555 can be a LM, NE, or MC(cmos) type, they’re all pin-compatible.

**C1/C2′s operating voltage should be elevated to 25V if you decide to go with a 12V energy source. Rule of thumb: the operating voltage of capacitors are at least double the supplied voltage, in other words, if the powersource is 9Volt, your capacitor(s) is a minimum of 18V. Transistor T1 could be any approximate substitute.

*** Use any suitable relay for the project and if you are not tight on area, use any size. I’ve develop this specific circuit to prevent students from fiddling using the security cameras in pc labs in the University I’m employed. I made certain the metal casing was not grounded. But as the schematic shows you can essentially hook it as much as any type of metal surface. I utilized a 12-vdc power adapter. Use any appropriate relay to handle your requirements. A ‘RESET’ switch (Usually Closed) can be added between the constructive and the ‘arrow-with-the-+’. The trigger (touch) wire is connected to pin 2 of the 555 and will trigger the relay, utilizing the body resistance, when touched. It is apparent that the ‘touching’ component has to be clean and can make good get in touch with with the trigger wire. This particular circuit may not be suitable for all applications. Just in case you wonder why pin 5 isn’t listed within the schematic diagram; it isn’t truly required. In certain noisy conditions a little ceramic capacitor is placed in between pin 5 and ground. It does no harm to add one or leave it out.

Extra note: For all those of you who didn’t discover, there is an approximate 5-second delay build-in prior to activation of the relay to avoid false triggering, or a ‘would-be’ thief, etc.

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Tips on Choosing a Right Power Source for 12V LED Lights

If you are looking for how to choose a right power source for 12 volt LED lights, you will come to right place, This video gives you things to think about when choosing between a plug-in 12V adapter and a hardware 12V driver; how to choose the best wiring for a large installation; and about how permanent you want your LED light setup to be.


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Safely Driving With Dual LCD Display Digital Alcohol Breath Tester

If you had a digital alcohol breath tester on hand after you had a few drinks you could have easily and conveniently measured your blood alcohol content to be certain it was safe and legal for you to get behind the wheel. You are really taking a gamble on those occasions when you think youre okay to drive but yoere not certain if youre under the legal blood alcohol content. Here I will show the dual lcd display digital alcohol breath tester with audible alert white.


There is no doubted that this alcohol breath tester is compact enough for you to carry in your pocket all the time. About 13,000 people a year are killed on our roads in drink-drive incidents, so we must continue to be vigilant in our efforts to prevent drunk driving. Breath analysis is the most common method of testing for blood-alcohol content in use today, it can ensure the safety of yourself and others! Nobody wants a DUI conviction or its consequences - you risk a night in jail, thousands of dollars in fines and legal fees, the embarassing publication after a trial. You had better not drive if you are not sure, just play it safe and call a cab - the cheapest alternative.

Features

* Backlight LCD display
* Replaceable sensor module
* Dual LCD screen breathalyzer
* Quick response and resume
* Auto power off
* Temperature display in ℃ or °F
* Digital alcohol Breath Tester with audible alert
* Professional airway design, LCD screen display
* Accumulative test record counting display before tests
* Promptly and conveniently design alcohol breath analyser for measuring BAC
* A simple method to analyse blood alcohol concentration at anytime and anywhere
* Countdown & count-up timer keep the time limit of your parking
* LCD Alcohol Tester Breathalyzer uses 2 x AAA alkaline batteries(batteries not included), clock use 1 x * AG13 button cell (batteries not included)
* This Alcohol Breath Tester with LCD screen and noncontact expiring design is compact and lightweight
* This Digital Alcohol Detector is pretty easy for carrying and convenient for using
* Numbers will be shown on the LCD screen so that you can judge by analyzing the numbers
* And if the alcohol content of tested expiring gas is out of range, this LCD Alcohol Tester Breathalyzer will automatically gives out audible alert
* This personal LCD Alcohol Tester Breathalyzer measures your blood alcohol level via a breath test anytime you need to know if youve crossed the line between safe and not safe
* Pretty useful as it is, such an LCD Alcohol Tester Breathalyzer is a really a good gift for yourself or anyone else you cares
* Lightweight and easy to use, this mini breathalyzer uses illuminating lights to tell you the outcome of your breath test
* Advanced semiconductor sensor with high accuracy and repeatability

Wednesday, June 5, 2013

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Posted in Arrangement, Art, Business

Ethernet Wiring

Ethernet Wiring on Tech Info   Lan Wiring And Pinouts
Tech Info Lan Wiring And Pinouts.


Ethernet Wiring on Ethernet Crossover Cable Wiring
Ethernet Crossover Cable Wiring.


Ethernet Wiring on The Difference Between Straight Through  Crossover  And Rollover
The Difference Between Straight Through Crossover And Rollover.


Ethernet Wiring on Ethernet Wiring
Ethernet Wiring.


Ethernet Wiring on Tech Info   Lan Wiring And Pinouts
Tech Info Lan Wiring And Pinouts.


Ethernet Wiring on Cat 5 Ethernet Cable Standards   Pin Out Assignments
Cat 5 Ethernet Cable Standards Pin Out Assignments.


Ethernet Wiring on Cat6 568 A Wiring Diagram
Cat6 568 A Wiring Diagram.


Ethernet Wiring on Qvlweb  Ethernet Wiring And Loop Back
Qvlweb Ethernet Wiring And Loop Back.


Ethernet Wiring on Ethernet Straight Through Cable Pin Configuration
Ethernet Straight Through Cable Pin Configuration.


Ethernet Wiring on Ethernet  Stp  Outdoor Ethernet Cable  1000ft  Cat5e  568b Wiring
Ethernet Stp Outdoor Ethernet Cable 1000ft Cat5e 568b Wiring.


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Wiring Harness Light Wiring Corolla Light Wiring Diagram

Light Switch Wiring Diagram on Up A Fluorescent Light Refer To The Wiring Diagram Below
Up A Fluorescent Light Refer To The Wiring Diagram Below.


Light Switch Wiring Diagram on To Light Fixtures And Power Outlets Or Receptacles A Light Switch
To Light Fixtures And Power Outlets Or Receptacles A Light Switch.


Light Switch Wiring Diagram on Outdoor Lighting Wiring Diagram Jpg
Outdoor Lighting Wiring Diagram Jpg.


Light Switch Wiring Diagram on Wiring Harness Fog Light Wiring Corolla Fog Light Wiring Diagram
Wiring Harness Fog Light Wiring Corolla Fog Light Wiring Diagram.


Light Switch Wiring Diagram on Vn800 Turn Signal Light Circuit   Wiring Diagram   Circuit Schematic
Vn800 Turn Signal Light Circuit Wiring Diagram Circuit Schematic.


Light Switch Wiring Diagram on Toyota Fj Cruiser Stop Light Switch Wiring   Circuit Schematic
Toyota Fj Cruiser Stop Light Switch Wiring Circuit Schematic.


Light Switch Wiring Diagram on Hybrid Fog Light Wiring Circuit Schematic Diagram   Circuit Schematic
Hybrid Fog Light Wiring Circuit Schematic Diagram Circuit Schematic.


Light Switch Wiring Diagram on Light Switch Diagram Power Into Light Pdf 44kb
Light Switch Diagram Power Into Light Pdf 44kb.


Light Switch Wiring Diagram on Wiring Diagram Light Switch Recent Posts Electric Car Vehicles Nissan
Wiring Diagram Light Switch Recent Posts Electric Car Vehicles Nissan.


Light Switch Wiring Diagram on The Switch Connections In The Ceiling Rose Are As Shown
The Switch Connections In The Ceiling Rose Are As Shown.


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Wiring Diagramscolor Coding Speaker Wiring1986 2005

Wiring Diagram Symbols on Tech Blog  Automotive Wiring Diagram Symbols
Tech Blog Automotive Wiring Diagram Symbols.


Wiring Diagram Symbols on Topics Wiring Diagram Symbols Electrical Wiring Diagram Toyota Wiring
Topics Wiring Diagram Symbols Electrical Wiring Diagram Toyota Wiring.


Wiring Diagram Symbols on Seamless Electrical Circuit Diagram Pattern    Germina  40519953
Seamless Electrical Circuit Diagram Pattern Germina 40519953.


Wiring Diagram Symbols on Source   More Electrical Diagram Symbols Wiring Blueprint Pictures
Source More Electrical Diagram Symbols Wiring Blueprint Pictures.


Wiring Diagram Symbols on Wiring Diagram Symbols Commonly Found In Hvac Wiring Diagrams
Wiring Diagram Symbols Commonly Found In Hvac Wiring Diagrams.


Wiring Diagram Symbols on Auto Wiring Diagram Advanced Symbols
Auto Wiring Diagram Advanced Symbols.


Wiring Diagram Symbols on Wiring Diagrams   Color Coding For The Speaker Wiring On A 1986 2005
Wiring Diagrams Color Coding For The Speaker Wiring On A 1986 2005.


Wiring Diagram Symbols on Circuits  2004 2007
Circuits 2004 2007.


Wiring Diagram Symbols on Wiring Diagrams If You Plan On Completing Electrical Projects
Wiring Diagrams If You Plan On Completing Electrical Projects.


Wiring Diagram Symbols on Auto Electrical Symbols
Auto Electrical Symbols.


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Small Plug Socket Wiring Cable Entry View

Trailer Plug Wiring on Trailer Wiring Sop
Trailer Wiring Sop.


Trailer Plug Wiring on Wiring Color For 7 Pin Trailer Plug Jpg
Wiring Color For 7 Pin Trailer Plug Jpg.


Trailer Plug Wiring on Trailer Wiring Basics For Towing
Trailer Wiring Basics For Towing.


Trailer Plug Wiring on Large 7 Way Rv Blade Type Plug Wiring Diagram For Gooseneck Lowboy And
Large 7 Way Rv Blade Type Plug Wiring Diagram For Gooseneck Lowboy And.


Trailer Plug Wiring on Trailer Lights And Wiring Harness   Nissan Titan Forum
Trailer Lights And Wiring Harness Nissan Titan Forum.


Trailer Plug Wiring on Trailer Wiring
Trailer Wiring.


Trailer Plug Wiring on These Correspond To The Pins In The Trailer Plug Socket And Are Wired
These Correspond To The Pins In The Trailer Plug Socket And Are Wired.


Trailer Plug Wiring on Pin Round Small Plug And Socket Wiring Cable Entry View
Pin Round Small Plug And Socket Wiring Cable Entry View.


Trailer Plug Wiring on Axle   Trailer Axles And Running Gear Components   Trailer Plug Wiring
Axle Trailer Axles And Running Gear Components Trailer Plug Wiring.


Trailer Plug Wiring on Trailer Wiring Diagram Light Plug Brakes Hitch 4 Pin Way Wire Brake
Trailer Wiring Diagram Light Plug Brakes Hitch 4 Pin Way Wire Brake.


Tuesday, June 4, 2013

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Ceiling Motor Wiringceiling Systems

Ceiling  Wiring on Ceiling Fan Wiring V5 Ls Fs
Ceiling Fan Wiring V5 Ls Fs.


Ceiling  Wiring on Smarthome Forum   Ceiling Fan Light Puzzle
Smarthome Forum Ceiling Fan Light Puzzle.


Ceiling  Wiring on Ceiling Fan Wiring 1 Lfp
Ceiling Fan Wiring 1 Lfp.


Ceiling  Wiring on Diagram Of Switch Wiring
Diagram Of Switch Wiring.


Ceiling  Wiring on Ceiling Fan Wiring   Circuit Style 14
Ceiling Fan Wiring Circuit Style 14.


Ceiling  Wiring on And Ceiling Fan Wiring  Refer To The Wiring Diagram In Figure 2
And Ceiling Fan Wiring Refer To The Wiring Diagram In Figure 2.


Ceiling  Wiring on Way Wiring  Ceiling Fan With Remote For Two Wire Hookup   Electrical
Way Wiring Ceiling Fan With Remote For Two Wire Hookup Electrical.


Ceiling  Wiring on Way Wiring  Ceiling Fan With Remote For Two Wire Hookup   Electrical
Way Wiring Ceiling Fan With Remote For Two Wire Hookup Electrical.


Ceiling  Wiring on Ceiling Fan Motor Wiring   Ceiling Systems
Ceiling Fan Motor Wiring Ceiling Systems.


Ceiling  Wiring on Ceiling Fan Wiring   Interior And Exterior Design
Ceiling Fan Wiring Interior And Exterior Design.


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