How can I make an AM wireless microphone? Can you suggest a website to find such schematic diagram for that? - schematic diagram endometrial carcinoma pathophysiology
Our teacher in electrical engineering gave us a project, a wireless transmission / RF bandwidth to AM. For it is our idea of the first draft, I do not know where to start. Also Web search for patterns of a wireless microphone MO, but found nothing, but only the FM wireless microphone.
Friday, February 12, 2010
Schematic Diagram Endometrial Carcinoma Pathophysiology How Can I Make An AM Wireless Microphone? Can You Suggest A Website To Find Such Schematic Diagram For That?
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2 comments:
An AM station only one oscillator, whose power in response to a signal modulation varies (in this case) the sound of a microphone.
The easiest-IC is as follows: five goals, one wire 74HC14 Hex Schmitt inverter in series with a 1MHz crystal complete cycle. Close the door, enter the "free" one of the intermediates in touch, and a resistance of 220 ohms output of this gate to 0V. Connect the antenna to the output of the gate performance and endurance. Connect a microphone carbon (from the old telephone set) in series with the power supply (1.2 V AA batteries * 4) in series.
The modulation is that the microphone picks up the voltage, which varies the oscillator (crystal oscillator, but retainsOperation) at a constant frequency. The resistance of 220 ohms sink, it must be ensured, is a serious disease progressively reduced current switches the oscillator.
Note: You will not be able to choose a number from a digital tuner, since the emissions from 1 MHz and digital tuners, which is a multiple of 9 kHz.
that, because FM is much more gear than I am.
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