transmitter 9v to 3v - Page 3 - Electronic Circuits Projects Diagrams Free

audioguru · 11th November 2004, 09:49 PM

Hi Zach,
Yeah, maybe I'll setup my own website and charge admission. Maybe with a "VIP" extra price section with naked girls holding my designs. I could also get paid for hits on popup ads. Thanks, a great idea.

How far is your range now?

zachtheterrible · 11th November 2004, 10:22 PM

Quote:

Yeah, maybe I'll setup my own website and charge admission. Maybe with a "VIP" extra price section with naked girls holding my designs. I could also get paid for hits on popup ads.

heee hee hee haaa haa ho hoo hoo ahahahaha. nice :lol:

wel i havent got a chance to experiment w/ the circuit since i assembled it on the cardboard but the first one that i made, i had a range of about 50 feet or so w/ a piece of junk clock radio. what i am aiming for is about 150 feet because thats the range that i got w/ a 9 volt transmitter

my friend's boyfriend (who is an electronics engineer :lol: ) is hopefully gonna be coming over saturday so maybe he'll help me out a bit. hope he's not just a digital engineer :cry:

audioguru · 12th November 2004, 01:48 AM

Hi Zach,
Certainly the digital engineer can design a powerful FM transmitter. He can start with, say a 10MHz crystal oscillator, and use it to digitally synthesize an FM frequency, with as much power as you want. It would be stable as a rock!
It would be like that digital stereo transmitter that comes from Africa or somewhere, posted by our member, The One.

zachtheterrible · 12th November 2004, 05:21 AM

cool 8) . i just bought two 20MHZ crystals to fiddle around w/ so after i finsih this here bug im gonna build me a nice monster of a transmitter

zachtheterrible · 12th November 2004, 05:11 PM

hey audio. i found another 3v fm trans schematic. download this pdf. it says itll go 300 meters.

its identical to mine, accept for the audio part, the type of transistors used, and the 47k instead of the 22k that im using.

the question that i have is will 2n3904 transistor suffice? Thanx

zachtheterrible · 12th November 2004, 10:50 PM

hello again.

well i got that transmitter that i built on the piece of cardboard working. in my sickening incompetence i connected the oscillator transistor backwards :x . Anyway, i tried a 47k resistor instead of the 22k and gues wut, i get beter range :lol: .

im kind of stuck though because my little clock radio runs on 9v batteries . . . dont have any of those around :cry: . you're right, 9v runs down VERY fast. I'm anxious to see what the range is when i plug in a new 9v.

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11th November 2004, 09:49 PM	(permalink)
audioguru	Hi Zach, Yeah, maybe I'll setup my own website and charge admission. Maybe with a "VIP" extra price section with naked girls holding my designs. I could also get paid for hits on popup ads. Thanks, a great idea. How far is your range now?

12th November 2004, 01:48 AM	(permalink)
audioguru	Hi Zach, Certainly the digital engineer can design a powerful FM transmitter. He can start with, say a 10MHz crystal oscillator, and use it to digitally synthesize an FM frequency, with as much power as you want. It would be stable as a rock! It would be like that digital stereo transmitter that comes from Africa or somewhere, posted by our member, The One.

12th November 2004, 05:21 AM	(permalink)
zachtheterrible	cool 8) . i just bought two 20MHZ crystals to fiddle around w/ so after i finsih this here bug im gonna build me a nice monster of a transmitter __________________ I'm no electronics god, i just talk too much.

12th November 2004, 05:11 PM	(permalink)
zachtheterrible	hey audio. i found another 3v fm trans schematic. download this pdf. it says itll go 300 meters. its identical to mine, accept for the audio part, the type of transistors used, and the 47k instead of the 22k that im using. the question that i have is will 2n3904 transistor suffice? Thanx __________________ I'm no electronics god, i just talk too much.

12th November 2004, 10:50 PM	(permalink)
zachtheterrible	hello again. well i got that transmitter that i built on the piece of cardboard working. in my sickening incompetence i connected the oscillator transistor backwards :x . Anyway, i tried a 47k resistor instead of the 22k and gues wut, i get beter range :lol: . im kind of stuck though because my little clock radio runs on 9v batteries . . . dont have any of those around :cry: . you're right, 9v runs down VERY fast. I'm anxious to see what the range is when i plug in a new 9v. __________________ I'm no electronics god, i just talk too much.