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semi auto aerial

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quazzar 
Member - Posts: 3
Member spacespace
Joined: February 11, 2007
Location: Australia
Posted: February 11, 2007 at 10:17 PM / IP Logged  
Not sure if this is the right forum but, I want to turn my semi auto aerial to a full auto arial using a simple timer cicuit with switching relay, the manual switch crosses over the +/- wires depending wether it goes up or down, can any one suggest a diagram for this circuit and parts that might be required?
hotwaterwizard 
Silver - Posts: 1,350
Silver spacespace
Joined: December 11, 2003
Location: California, United States
Posted: February 11, 2007 at 10:44 PM / IP Logged  

How long up and how long down?

Here is what I came up with so far. Push button control.

semi auto aerial -- posted image.

John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !
quazzar 
Member - Posts: 3
Member spacespace
Joined: February 11, 2007
Location: Australia
Posted: February 12, 2007 at 12:23 AM / IP Logged  

Wow, thanks for the quick reply, but doh! I forgot to mention I would like it to be activated the radio via single wire feed +12v  ie: power on, goes up (3 secs) and power off, goes down (3 secs)

I know this can be acheived by getting a new full auto aerial, but I would like to keep the origininal one that was fitted by the factory.

hotwaterwizard 
Silver - Posts: 1,350
Silver spacespace
Joined: December 11, 2003
Location: California, United States
Posted: February 12, 2007 at 1:05 AM / IP Logged  

Here is the Fully Automatic Schematic I created from scratch ( UNTESTED )

semi auto aerial -- posted image.

John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !
quazzar 
Member - Posts: 3
Member spacespace
Joined: February 11, 2007
Location: Australia
Posted: February 12, 2007 at 1:07 AM / IP Logged  

Many Thanks!!!!

Will try it out and let you know how it went

hotwaterwizard 
Silver - Posts: 1,350
Silver spacespace
Joined: December 11, 2003
Location: California, United States
Posted: February 12, 2007 at 1:12 AM / IP Logged  
Use 47 uF instead of the 470 on the 2 transistors for 3 seconds.
John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !

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