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Showing posts with the label Range

Long Range FM Transmitter

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Long Range FM Transmitter Circuit diagram. The use of transmitters which have a more powerful output than the ‘flea-power’ are sometimes required when there are many obstacles in the path of the surveillance transmitter and monitoring station receiver, or the distance between them is too far so as to make a low powered device feasible. Whereas a typical micro transmitter will produce an RF power in the order of just a few milliwatts, i.e. a few thousandths of a watt, the VHF-FM transmitter described has a power output of between around a half and 2 watts, depending on the power source, which may be anywhere between 6 volts and 30 volts d.c. . Long Range FM Transmitter Circuit diagram : Long Range FM Transmitter Circuit diagram The battery or batteries should be of the alkaline high power type, since the current drain will be found to be relatively higher when compared to microtransmitter current drain The power output of this device is somewhat proportional to the current drain and so...

Long Range Distance Infrared Transmitter

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Here the long range / distance Infrared transmitter circuit, give you extra power for your Infrared transmitter . The majority of the IR remotes do the job reliably within a range of 5 metres. The circuit complexity increases in case you design the IR transmitter for good operation more than a extended distance, for example, 10 metres. To double the distance from 5 metres to 10 metres, it is advisable to enhance the transmitted power 4 times. In case you want to realise a highly directional IR beam (very narrow beam), you could suitably make use of IR laser pointer as the IR signal source. The laser pointer is readily offered in the marketplace. Even so, using a very narrow beam from the laser pointer, you will need to take special care, lest a small jerk to the gadget may change the beam positioning and lead to loss of contact. Right here is really a simple circuit which will provide you with a fairly long distance. It utilizes three infrared transmitting LEDs (IR1 through IR3) in ...

Long Range FM Transmitter Circuit Diagram

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Long Range FM Transmitter Circuit diagram. The use of transmitters which have a more powerful output than the ‘flea-power’ are sometimes required when there are many obstacles in the path of the surveillance transmitter and monitoring station receiver, or the distance between them is too far so as to make a low powered device feasible. Whereas a typical micro transmitter will produce an RF power in the order of just a few milliwatts, i.e. a few thousandths of a watt, the VHF-FM transmitter described has a power output of between around a half and 2 watts, depending on the power source, which may be anywhere between 6 volts and 30 volts d.c. . Long Range FM Transmitter Circuit diagram : Long Range FM Transmitter Circuit diagram The battery or batteries should be of the alkaline high power type, since the current drain will be found to be relatively higher when compared to microtransmitter current drain The power output of this device is somewhat proportional to the current drain and so...