Laser Communicator!!! Amplifier???? Science Toys | Science Blog | Log Out | Topics | Search
My Toys | Energy | Moderators | Register | Edit Profile

Scitoys Message Board » I am having trouble building one of the toys » Laser Communicator!!! Amplifier???? « Previous Next »

Author Message
Top of pagePrevious messageNext messageBottom of page Link to this message

jared
Posted on Thursday, April 1, 2004 - 6:19 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

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)?
Top of pagePrevious messageNext messageBottom of page Link to this message

jared
Posted on Thursday, April 1, 2004 - 6:45 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

oh yeah and will radioshack part # 33-2001 work for the mic? its the cheapest one they have.
Top of pagePrevious messageNext messageBottom of page Link to this message

Simon Quellen Field (Sfield)
Posted on Thursday, April 1, 2004 - 7:38 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

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.
Top of pagePrevious messageNext messageBottom of page Link to this message

jared
Posted on Friday, April 2, 2004 - 3:46 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

could you draw a schematic for the entire project (layout)?
Top of pagePrevious messageNext messageBottom of page Link to this message

Simon Quellen Field (Sfield)
Posted on Friday, April 2, 2004 - 3:51 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

There's no schematic to draw.
You just plug it into the amplifier and you're done.

Microphone --> amplifier --> laser communicator.

That's it.
Top of pagePrevious messageNext messageBottom of page Link to this message

jared
Posted on Friday, April 2, 2004 - 6:25 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

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!!! ^
Top of pagePrevious messageNext messageBottom of page Link to this message

Simon Quellen Field (Sfield)
Posted on Friday, April 2, 2004 - 6:41 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

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.
Top of pagePrevious messageNext messageBottom of page Link to this message

Drew
Unregistered guest
Posted on Saturday, February 26, 2005 - 11:44 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

That being said since you aren't building the amplifier the schematic for the amplifier would vary for each one purchaced

Add Your Message Here
Post:
Username: Posting Information:
This is a private posting area. Only registered users and moderators may post messages here.
Password:
Options: Enable HTML code in message
Automatically activate URLs in message
Action:
For those who have trouble spelling, the Google Toolbar (included in the Google Pack) can check and correct the spelling in your posts on this message board and others.

Renewable Energy

Topics | Last Day | Last Week | Tree View | Search | Help/Instructions | Program Credits Administration