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Search found 16 matches
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Topic: Question about frequency
Recon Blazer

Replies: 0
Views: 2334
PostForum: FM transmitters   Posted: Sat Dec 11, 2004 1:26 am   Subject: Question about frequency
I know all it takes is a simple signal generator to produce a transmitter, but I am confused on how to design for a given frequency.

I know what frequency means, its the amount of signals per seco ...
Topic: Can someone provide me a simple timer schematic?
Recon Blazer

Replies: 9
Views: 20537
PostForum: Schematics - help and ideas   Posted: Sat Dec 11, 2004 1:15 am   Subject: Can someone provide me a simple timer schematic?
Ok I ordered and received a 4060, 4013, 7490, and a 7447, as well as a 32.768K crystal.

I built the 1Hz pulse circuit, and it works just fine. However, When I connected the 7490, 7447 and the 7-se ...
Topic: Walkie Talkie
Recon Blazer

Replies: 2
Views: 4475
PostForum: Schematics - help and ideas   Posted: Sat Nov 27, 2004 8:55 pm   Subject: Walkie Talkie
He's asking because he just wants to learn how they're made.
Topic: Can someone provide me a simple timer schematic?
Recon Blazer

Replies: 9
Views: 20537
PostForum: Schematics - help and ideas   Posted: Fri Sep 17, 2004 7:57 pm   Subject: Can someone provide me a simple timer schematic?
Ok, that makes it alot better Applause

I think I can see the decimal in the hz for the schematic. It's kind of blurry if you zoom in.

I'm guessing that the capacitor on the right is a variable c ...
Topic: Can someone provide me a simple timer schematic?
Recon Blazer

Replies: 9
Views: 20537
PostForum: Schematics - help and ideas   Posted: Fri Sep 17, 2004 7:50 pm   Subject: Can someone provide me a simple timer schematic?
Ok, that makes it alot better =D>

I think I can see the decimal in the hz for the schematic. It's kind of blurry if you zoom in.

I'm guessing that the capacitor on the right is a variable ca ...
Topic: Can someone provide me a simple timer schematic?
Recon Blazer

Replies: 9
Views: 20537
PostForum: Schematics - help and ideas   Posted: Fri Sep 17, 2004 5:47 pm   Subject: Can someone provide me a simple timer schematic?
32768Khz (used in wrist watches). This way you'll get 2Hz out
of the 4060 (largest divide ratio is /16384).

Do you mean 32,768hz, or 32,768Khz (32.768Mhz)?

If its 32,768Khz, then

32,768Khz ...
Topic: Can someone provide me a simple timer schematic?
Recon Blazer

Replies: 9
Views: 20537
PostForum: Schematics - help and ideas   Posted: Fri Sep 17, 2004 5:40 pm   Subject: Can someone provide me a simple timer schematic?
What I recommend to you is that you use the 4060 chip, it is a binary
counter with oscillator which can also be made with quartz crystal.
I would suggest using the lowest frequency available quart ...
Topic: Can someone provide me a simple timer schematic?
Recon Blazer

Replies: 9
Views: 20537
PostForum: Schematics - help and ideas   Posted: Fri Sep 10, 2004 11:54 pm   Subject: Can someone provide me a simple timer schematic?
I've learned some stuff since I last posted here, and I feel I am ready to start working on schematics now. I have a good grasp on Ohm's Law, resistance, capacitors, symbols and stuff.

I was at my ...
Topic: What's this symbol?
Recon Blazer

Replies: 1
Views: 3380
PostForum: Schematics - help and ideas   Posted: Sun Apr 11, 2004 1:33 am   Subject: What's this symbol?
I am studying some schematics in a book I bought, but unfortunately, there isn't a legend in the book that tells what this symbol is.

It looks like an upside down capital e. "E" only upside down a ...
Topic: I need a good symbol legend
Recon Blazer

Replies: 4
Views: 5688
PostForum: Schematics - help and ideas   Posted: Sun Apr 11, 2004 1:30 am   Subject: I need a good symbol legend
Come on. Please help me out here.
Topic: I need a good symbol legend
Recon Blazer

Replies: 4
Views: 5688
PostForum: Schematics - help and ideas   Posted: Wed Jan 28, 2004 4:06 am   Subject: I need a good symbol legend
Does anybody have any url or a picture of a legend? Many of the symbols in the schematics I've never seen before. I wanna try out some schematics here. Thanks.
Topic: Using an FM transmitter for an R/C car
Recon Blazer

Replies: 1
Views: 3276
PostForum: FM transmitters   Posted: Sun Jan 18, 2004 5:07 am   Subject: Using an FM transmitter for an R/C car
What kind of FM transmitter could I use to control a remote control car and have it go a mile or more?

Make - model # - and cross reference #

and where can I buy one at?

Also, how do you incr ...
Topic: ultrasound amplifier
Recon Blazer

Replies: 3
Views: 5213
PostForum: Schematics - help and ideas   Posted: Sat Jan 17, 2004 6:30 pm   Subject: ultrasound amplifier
Regarding ultrasonic waves, I found a great site pertaining to it. You might want to check it out http://www.amazing1.com/security3.htm
Topic: 28V 40A PSU
Recon Blazer

Replies: 4
Views: 6099
PostForum: Schematics - help and ideas   Posted: Sat Jan 17, 2004 7:46 am   Subject: 28V 40A PSU
OH MY GOD!!! I love your account and profile! No, may the Force be with YOU.

WHere do you obtain transmitters?
Topic: Transmitting Uhf television
Recon Blazer

Replies: 3
Views: 5681
PostForum: Schematics - help and ideas   Posted: Sat Jan 17, 2004 7:43 am   Subject: Transmitting Uhf television
dude i kind of have a similar project right now. i wish i could offer you help, but i'm a virgin at electronic components. Possibly could you help me in my video transmitter receiver topic?? i really ...
Topic: NEED HELP with a video transmitter and receiver
Recon Blazer

Replies: 2
Views: 4409
PostForum: Schematics - help and ideas   Posted: Sat Jan 17, 2004 7:39 am   Subject: NEED HELP with a video transmitter and receiver
I've always wanted to explore places or areas with a car, so I want to put an infrared camera, the bare camera piece that you solder onto the circuit board kind of camera lens piece. And I also want i ...
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