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First Electronic Project Help - FM Transmitter

 
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Sullivan
Newbie


Joined: 13 Aug 2008
Posts: 3

PostPosted: Wed Aug 13, 2008 11:30 pm    Post subject: First Electronic Project Help - FM Transmitter Reply with quote

Ok I need a little help. I am doing my first project. I am doing the following:

http://www.cie-wc.edu/fmtransmitter.asp

Parts list as follows:

R1, R4, R6 10K resistor
R2 1Meg resistor
R3 100K resistor
R5 100 ohm resistor
R7 1K resistor
C1, C2 0.1uf capacitor
C3 0.01uf capacitor
C4 5 - 30pf variable capacitor
C5 4.7pf capacitor
Q1, Q2 2N3904 transistor
L1 9 turns of #22 gauge
Microphone Electret Mic
Circuit Board
Battery Clip


I need a little help with some of the parts as I think I may not have gotten some of the correct things. Please help me.

The things marked below in bold, I know I got the right ones:

R1, R4, R6 10K resistor
R2 1Meg resistor
R3 100K resistor
R5 100 ohm resistor
R7 1K resistor

C1, C2 0.1uf capacitor
C3 0.01uf capacitor
C4 5 - 30pf variable capacitor
C5 4.7pf capacitor
Q1, Q2 2N3904 transistor
L1 9 turns of #22 gauge
Microphone Electret Mic
Circuit Board
Battery Clip


These parts I have no clue:

C1, C2 0.1uf capacitor
C3 0.01uf capacitor
C4 5 - 30pf variable capacitor
C5 4.7pf capacitor

For the above I bought:

http://i531.photobucket.com/albums/dd356/truedefinition/DSC00017.jpg
http://i531.photobucket.com/albums/dd356/truedefinition/DSC00019.jpg
http://s531.photobucket.com/albums/dd356/truedefinition/?action=view&current=DSC00020.jpg


For the "L1 9 turns of #22 gauge" will this do?:




I know I might be missing something, any help is great!
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Turd
HG Ruler


Joined: 18 Aug 2007
Posts: 274
Location: Saskatchewan, Canada

PostPosted: Thu Aug 14, 2008 5:32 am    Post subject: Re: First Electronic Project Help - FM Transmitter Reply with quote

C1, C2 0.1uf capacitor Will be marked "104"
C3 0.01uf capacitor Will be marked "103"
C4 5 - 30pf variable capacitor I would just use a fixed cap of 10pf or something and just tune it by compressing and/or uncompressing the coil.
C5 4.7pf capacitor When I have made these types of circuits I omitted C5 and used a 0.0001uf cap (marked "101") from the base of Q2 to the emitter of Q2.


eric
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Sullivan
Newbie


Joined: 13 Aug 2008
Posts: 3

PostPosted: Sat Aug 16, 2008 6:02 pm    Post subject: Reply with quote

thanks for replying. I am new to working/building with electronics. I am taking a electronics class my senior year, which I start fairly soon.

But I am confused when you say "marked as".
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Turd
HG Ruler


Joined: 18 Aug 2007
Posts: 274
Location: Saskatchewan, Canada

PostPosted: Sat Aug 16, 2008 9:42 pm    Post subject: Reply with quote

Thats what will be printed on them Very Happy
Link


eric
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Sullivan
Newbie


Joined: 13 Aug 2008
Posts: 3

PostPosted: Sun Aug 17, 2008 9:58 pm    Post subject: Reply with quote

This project that I was going to do turned out to be far harder then I thought. I think I will wait till my corse starts.
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