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IC based TV transmitter circuit Posted: 07 Jul 2011 06:02 AM PDT TV transmitter circuit. A very simple and high quality TV transmitter circuit based on IC MC374 is shown in this article.MC1374 is an integrated TV modulator circuit that can be used in various TV transmitter applications. The MC1374 includes all necessary circuitries required for a TV modulator such as sound carrier oscillator, FM audio modulator, dual input RF modulator etc. The IC packed with a lot of great features like wide dynamic range, single supply operation, low distortion, variable gain radio frequency modulator section, minimum intermodulation distortion, + or – Sync etc. The IC requires few external components and can be operated from a supply voltage range from 5 to 12V DC.The circuit diagram of the TV transmitter using MC1374 is shown below. Circuit description. Video section. The video signal input to the circuit can be either negative or positive. The RF output will be approximately zero when the voltages at pin 1 and 11 are equal and the RF output increases linearly as the difference in voltage increases. Resistors R1,R2 and R3 determines the Q factor of the circuit are here their values are so chosen that the Q factor is around 15 which is the desired value for...

XREP – A Combination of Taser and Shotgun Posted: 06 Jul 2011 10:33 PM PDT   We have already discussed about StunRay Technology and its capability to substitute tasers and guns used in law enforcement. But, there are some limitations to the amount of damage you can do to the suspect if he is not in front of you. That is why tasers are considered more effective as it will leave the suspect electrocuted and numb for a quite a long time, which is more than enough to seize and cuff him up. But, the tasers used now have a problem of “capability gap”. That is, if the suspect is standing at a distance of 40 feet away from you with a knife, you do have the advantage of using the taser effectively. But if he moves further away with a deadly object in his hand and is ready to use it against you, which will be a problem. The reason is that, most of the tasers work accurately at a range no more than 50 feet. Thus you will be forced to use a gun against the suspect, making the situation more deadly. So, the officers claim that they need a less lethal weapon than a gun and a better weapon than the conventional...

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