Re: 1.5v Tracking Transmitter

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1.5v Tracking Transmitter

Posted by: andrew ()

Date: June 26, 2003 09:52PM

I guess this sends out a beeping beacon, and is picked up by an fm radio when it's pointed towards the beacon....

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Re: 1.5v Tracking Transmitter

Posted by: Dan Whelan ()

Date: November 17, 2003 05:23PM

There are still quite a few good circuits that are using the LM3909 ic (like the 1.5v tracking transmitter). Unfortunately, it's been discontinued from National Semiconductor. I still find these ICs very useful because of the low power consumption, and minimal components required for it's circuits. It's good to use in a pich....of course, I used my last one 2 days ago...:-/

Can someone tell me where I can get more of these?

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Re: 1.5v Tracking Transmitter

Posted by: Shawn ()

Date: May 04, 2004 12:56PM

Yeah, NTE produces an LED flasher circuit. You could also use a simple oscillator. It's pretty easy to build a one hz oscillator using just an inverter, a resistor and a cap.

-Shawn

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			Home Forum!! *Robotics Projects:* Smallbot *Electronics Projects:* SMT Reflow Serial Multiplexer *Project Log:* Current Projects My Bench Equipment				Tracking : Reconn's World Forum Attention! If you would like to post, but don't want to create your own account, use login:guest password:rw -- Enjoy! Goto Topic: Previous•Next Goto: Forum List•Message List•New Topic•Search•Log In•Print View 1.5v Tracking Transmitter Posted by: andrew () Date: June 26, 2003 09:52PM I guess this sends out a beeping beacon, and is picked up by an fm radio when it's pointed towards the beacon.... Options: Reply•Quote Re: 1.5v Tracking Transmitter Posted by: Dan Whelan () Date: November 17, 2003 05:23PM There are still quite a few good circuits that are using the LM3909 ic (like the 1.5v tracking transmitter). Unfortunately, it's been discontinued from National Semiconductor. I still find these ICs very useful because of the low power consumption, and minimal components required for it's circuits. It's good to use in a pich....of course, I used my last one 2 days ago...:-/ Can someone tell me where I can get more of these? Options: Reply•Quote Re: 1.5v Tracking Transmitter Posted by: Shawn () Date: May 04, 2004 12:56PM Yeah, NTE produces an LED flasher circuit. You could also use a simple oscillator. It's pretty easy to build a one hz oscillator using just an inverter, a resistor and a cap. -Shawn Options: Reply•Quote Goto: Forum List•Message List•Search•Log In Array Sorry, only registered users may post in this forum. Click here to login This forum powered by Phorum.