burglar alarm circuits
make a simple Alarm System for school project?
mechanism failure circuit
Get materials insulated wire 4 wire strands, each 1 foot long, is the son of the house, inside the battery operated devices, no longer work. Sure their parents give permission for apart. You can also buy the child and other supplies quoted from a Radio Shack, a hardware store, or the electrical part of the big stores like Walmart. Note: To make this alarm, you will have to separate the rubber, plastic insulating two children. Try cleaning child before starting this lesson. If it is too difficult for you, then you can buy without having to strip insulated wire. 1.5 volts. Thread of the comet or a strip and carpet yarn, 3-5 feet long. Electrical tape Scissors 1.5 volt mini Spring ring type wooden clothes pin a piece of cardboard or plywood inches, 4 by 12 inches or larger. Super Glue ——————————— ————— Principles ——————————– The best way I know to build something is to understand each individual part. The alarm system consists of three parts: the device that makes noise – The sound of a horn battery buzzer switch We can not have an alarm without something that makes sounds. Therefore, use a tone that is something that loud noise. To make the sound, the sound needs to be attached to the battery. Battery The battery is very important for the alarm. For the ring work, energy needs. This energy battery. If the alarm is not connected to the battery will not work. You have a button to control the connection. The buzzer switch See how the bell works to connect the 1.5 volt battery to the buzzer directly. (The buzzer should come with two different children. If we isolate the wire, you have to peel a little long for what you are able to see the cable inside.) Son Get the other two parts and connected at opposite ends of the battery. Connect a cable (+) and the other to (-) (see Figure 1). In Figure 1, the battery must have the (+) and (-) label. Also, if you look closely, there is a (+) and (-) in the battery you bought. Optionally, Use electrical tape to hold son on drums. Connect the ring with the son and the son of the battery by the twist, as in Figure 1. The bell should make noise, if not, check connections at the ends of the son on drums. Question: What happens when you disconnect wire ring? Now reconnect many often as you like and see how the ringer on and off. When connecting and disconnecting the child, which has called a switch. When you unplug a cable and the alarm stops resonance, says that the switch is open. When opened, no battery power reaches the bell. When you connect the cable and the doorbell rings, say the switch of is closed. When closed, the battery power reaches the bell. ———————————— ————– Disconnect —————————— Making alarm wire from the bell of the battery. To make things easier, put the battery and the bell in the wood, as shown in Figure 2. Use a piece of tape to Battery burn wood to keep moving. Get the ring and put in another corner of the wood and string bass, as well as in Figure 2. Now that you've saved from the battery and timbre of the wood, we will work in the most important system of the alarm switch. The thief switch is a little different from the bell switch you have done for the disconnection and connection cable to the beginning of this lesson. Now he wants a switch that works easily and quickly without having to make and break connection with his hands. You need a switch that activates or deactivates the ring according to a door opening or closing. To perform a maneuver that does this will result in a switch of the alarm. The fight against the first switch burglar alarm, you will need to wrap the ends of the clothespin to the uninsulated wire or insulated wire that has been stripped. See diagram 3. Ensure – Ensure that the child contact during the hook is closed, as in Figure 4. If the child does not play, there will be no connection and the alarm does not work. After completing her son, connect a free ends of the wires to a son of the battery. Connect the other wire of the bell PIN. Connect the child is free of metal on the battery to the buzzer (if not already done so, when the ringer switch, top). Note: If you're confused now, just look at Figure 5 and son connected as shown in the picture. Test the switch opening and closing the pin. When the pin Laundry is closed, the alarm should sound. If not, make sure you are connected all the children and is not isolated from the clothes pin at the end of touch son. If this is not always shown in Figure 5 and see all the new son. Thus should work. When at work, you may want to disable it by placing a small piece of cardboard between the ends of the bar to open the switch and disabling the doorbell. It is regrettable that working with the ring. (See Figure 6.) With the bell off, glue the clothes pin to a corner of the wood with Crazy Glue (see Figure 7). WARNING: You must be careful to glue. It adheres very quickly. Do not touch the glue with your fingers. Could be a good idea to have a useful solution if you accidentally fingers caught, can dissolve the glue for you. Finally, connect the cable to the box that has already put in the ends of the pins. When the chain breaks up, the child the pin contact and the alarm sounds. That's it! Now you have an alarm system. Just connect the cable to the door with force, so that when the door is open cardboard is pulled and the alarm sounds. Have fun catching the people who walk in your room or simply someone who steals the lunch box
|
|
VIDEO SURVEILLANCE CCTV 3 Signs & 3 Free Decals closed circuit tv camera $24.99 This sign is made with an exterior grade PVC plastic and printed with the best inks in the industry. Perfect for outdoor use for over 5 years or will look great inside. No rusting or fading indoors or out!! The sign come with round corners and 2 holes for easy mounting. You can’t go wrong with a Sign World’s Street Sign!… |
|
|
VIDEO SURVEILLANCE CCTV ~1 Sign & 3 Free Decals~ closed circuit tv camera signs $12.99 This sign is made with an exterior grade PVC plastic and printed with the best inks in the industry. Perfect for outdoor use for over 5 years or will look great inside. No rusting or fading indoors or out!! The sign come with round corners and 2 holes for easy mounting. You can’t go wrong with a Sign World’s Street Sign!… |
|
|
VIDEO SURVEILLANCE CCTV 12 Signs & 12 Free Decal closed circuit tv camera $69.99 This sign is made with an exterior grade PVC plastic and printed with the best inks in the industry. Perfect for outdoor use for over 5 years or will look great inside. No rusting or fading indoors or out!! The sign come with round corners and 2 holes for easy mounting. You can’t go wrong with a Sign World’s Street Sign!… |
|
|
Burglar Alarm and Sound Maker Snap Circuit Mini-Kit Intruder alert! Intruder alert! With the Burglar Alarm Snap Circuits Kit, you just click and snap the plastic pieces together and – voila! – you’ll know when your space has been violated. Snap together your own burglar alarm and sound effects maker while you learn about circuitry and electronics. Snap-together circuits require no soldering or wires. 17-piece burglar alarm kit includes circuitry fo… |
|
|
Alarms: 55 Electronic Projects and Circuits $14.95 … |
|
|
Security Technology: Closed-Circuit Television, Alarm, Airport Security, Burglar Alarm, Bank Vault, Car Alarm, Lojack, Safe $12.73 Purchase includes free access to book updates online and a free trial membership in the publisher’s book club where you can select from more than a million books without charge. Chapters: Closed-Circuit Television, Alarm, Airport Security, Burglar Alarm, Bank Vault, Car Alarm, Lojack, Safe, Millimeter Wave Scanner, Passive Infrared Sensor, Explosives Trace-Detection Portal Machine, Ip Reader, Anti… |