There are many ways to ensure top rc helicopter lessons. The radio transmits different frequencies. As in this setting is active receiver for control 2 is used as an elevator. With electronics everything is possible. There are some circuits that convert the signal from the student and convert the signal expected from the teacher, arranging the order of the channels, voltage levels and, if PPM is positive or negative. They are usually cables to connect two specific commercial radio brands. This is a valid solution, but more expensive, also sells a device that connects two receivers are manufactured according to Alan French or Belgian company (cannot remember the name) which towards French magazine advertising of radio in 2000. Wireless System This is a rc helicopter system developed by Jamara mark where you need two receivers, one for the student and one for the Professor. In principle, only 2 channels can be assigned only for students but with the possibility of another of these devices in cascade or series and to obtain 4 shared channels. With this system does not produce the channel assignment problem, only to connect each cable from the receiver output to the appropriate place and ready. According to German users, it works perfectly and you can mix all brands without problems. This idea came from a control system to use the simulator with the PC. The idea is that students often transmitted in a very different teacher, something like 35MHz and 72MHz, the recipient of the student connects to the input of Professor Trainer, this is done because it takes the rc helicopter PPM signal after the detector and before entering the decoder. Transmitter AM This rc helicopter circuit is based on a simple RF transmitter. It incorporates an overtone crystal oscillator ideal for a 3rd harmonic, an amplifier and a filter. The purpose of these circuits is to provide a period of 150mW or more completely separate RF power from the previous stage which is the modulation or "encoder circuit." This transmitter receives the signal from the encoder and transmitted in AM responsible for the desired frequency using quartz crystals. The AM rc helicopter transmitter is basically a crystal oscillator with a given frequency range in third or fifth harmonic RF amplifier and a filter outlet adapter antenna impedance of 50 Ohms. The PPM signal is fed directly modulating a transistor in cut / saturation where it says "Mod" to give power to this last part of the circuit.
Related Articles -
rc, helicopter,
|