Complex is at the moment in the phase testings. It is about the battery-powered communicator. The performed complex spends in the admissive mode (without the entry signal) less than 300uA. Complex works on system half duplex. i.e.. works in the admissive mode, and when press push button, loudspeaker uses as the microphone and works in the sender mode. As the microphone (the loudspeaker) was able will use Iskra microphone / the headphone impedances 185R (ETA82). Are built in high efficient LED of diodes indicates the higher entry amplitude of audio signals, and when switch to on the sending activated on the stronger loudness of sound. So was able in roughly does test because of the transmitter, and the complex because of the indication LED was able will use and in the strengthened noise (if is in the purview). Of course, amplified noise will carry across the microphone and will obstruct sending.
To 100 same complexes was able link on the same twister. All complexes are in the regime of reception, and when wants the transfered information then presses push button and starts talk. Across microphones and amplifiers transfer on other communicators and they additional separately intensifies the signal for own loudspeakers. Possible is the work and more the communicator in the sending, but then will fall the relative amplitude everyone.
Advantage of communicator is what does have not the master of device also the communication was able will be realized between the any device. Of course, all are linked on here the line automatically listens in the communication.
Purpose is for use in the speleological research, rescuing in caves, but was able will use and for other communication purposes (inside objects or out-of-door). Usage NiMh of accumulator and small solar cells (0,5W) the complex out-of-door, where has lights, can work and without spendings of batteries.
power supply: 4.5V..6V (3..4 * AA) complex works to a degree and on 2V, but he falls maxes. loudness and output amplitude
the minimal consumption: 3mA duration battery 600 hours (25 day)
maximal consumption: 20mA to 100 hours of work in the reception with maxes. loudness
maximal capacitance the twister for the communication: 470nF
the peak exit power (amplitude) amplifiers: 44mW (2,8Veff) the sine
voltage on communication twister: 1,4Veff maxes
way of work: half duplex - reception or the delivery
entry impedance: 20K
output impedance: 220R
impedances of loudspeakers: 185R