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  #1  
Old 02-10-2010, 11:12 PM
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Janekom Janekom is offline
 
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Question Timing Buzz Box

I would like to know if someone out there has a simple circuit diagram that I could use to make my own timing buzz box.
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  #2  
Old 02-11-2010, 12:59 AM
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Kahuna Kahuna is offline
 
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A very simple search of the forums yielded many answeres to your question.
Here is one.
http://www.vansairforce.com/communit...ead.php?t=3619
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  #3  
Old 02-11-2010, 05:07 AM
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Yes Sir - I did a very simple search before posting - Sir.
The product advertised is looking good.
Have you seen where I live? By the time it gets here it is double the costs. I can afford it, but thought it would be nice to make up my own one - in the spirit of home building you know?
Maybe I should have been more clear about my intentions, but sometimes I do things in a hurry and as my mother tongue is also not English, looking back at my message, it does not reflect my reasons for asking the question 100%.

So maybe someone else has an idea for me.
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  #4  
Old 02-11-2010, 08:36 AM
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dhammer dhammer is offline
 
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Default Mag timer

Back in ancient times when I was in A&P school we had to build one as a project. You might check out the schematic HERE . It is very simple and can be built out of cheap parts. It will work just fine, but you'll learn where they get the name "buzz box"

Don
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  #5  
Old 02-11-2010, 09:59 AM
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Smile Jim Wier of RST...

...published one in Kitplanes in 1999.

The article is here --

http://www.rst-engr.com/kitplanes/KP9910/KP9910.htm
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  #6  
Old 02-11-2010, 10:24 AM
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The Brewington tech box works well.
I purchase one about 5 years ago (before it was Brewington) and I've been happy with the performance.

I did have it fail once, but I replaced a transistor and it's been fine since. I provide the failure analysis back to the designer-- as I recall, they had a few failures due to the same problem (bad batch of 2N2907 transistors).

I'd buy one again in a heartbeat. Even with shipping to SA, it's a deal.

Vern
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  #7  
Old 02-11-2010, 12:30 PM
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Thanks guys - I just knew someone out there will know
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RV10 - ZU-XOX - (Flying)
RV7A - ZU-JRV - (Flying)
RV10 - ZU-JVR - (Written off)
RV7 - ZU-LOL - (Flying)
RV10 - ZU-RVI - (Flying)
RV7A - ZU-MER (Bought back)
RV7A - ZU-JAD (Sold Flying)
Dues paid for 2020 WITH A SMILE
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