| Author | Message | ||
     jared |
Why do you need an amplifier when you hook up the microphone to the circuit??? Could you please draw shematics for the entire circuit and post it here (with the mic included)? | ||
| jared |
oh yeah and will radioshack part # 33-2001 work for the mic? its the cheapest one they have. | ||
| Simon Quellen Field (Sfield) |
Microphones generate microwatts of power. You need tens of milliwatts to modulate the laser. Hence, you need to amplify the microphone. You don't need a schematic -- you aren't building the amplifier. You are simply plugging the device into the amplifier in the same way we plugged it into the radio. Which microphone you choose will depend on the amplifier you choose. Ask Radio Shack to sell you one that works with your amplifer, or sell you the micrphone and amplifier together. | ||
| jared |
could you draw a schematic for the entire project (layout)? | ||
| Simon Quellen Field (Sfield) |
There's no schematic to draw. You just plug it into the amplifier and you're done. Microphone --> amplifier --> laser communicator. That's it. | ||
| jared |
NOT SCHEMATIC FOR "AMPLIFIER"!!! Draw a schematic for the entire thinG!!! **Transmitter** Microphone --> amplifier --> audio transformer--> Laser and Battery. **Receiver** Photo-resistor --> Battery --> Speaker. Please draw a schematic of this!!! ^ | ||
| Simon Quellen Field (Sfield) |
There is already a schematic on the web page for the transmitter and the simple receiver. Instead of plugging the transmitter into a radio, you plug it into an amplifier. If this is difficult to understand, a schematic won't do you any good. For the receiver that uses the battery and photoresistor, there is an extremely clear and large photograph that shows exactly what the schematic would show -- every connection is visible. Note that the phone plug goes to an amplifier, not to a speaker. If this is causing you trouble, try the solar cell and piezoelectric earphone first. It is much simpler. If your teacher is requesting a schematic for your project, that sounds like a homework assignment that you are expected to do yourself. If you understand enough about schematics to read one, you will have no trouble drawing a schematic from the information in the photograph and the text. | ||
| Drew Unregistered guest |
That being said since you aren't building the amplifier the schematic for the amplifier would vary for each one purchaced |
