Matronics Email Lists Forum Index Matronics Email Lists
Web Forum Interface to the Matronics Email Lists
 
 Get Email Distribution Too!Get Email Distribution Too!    FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Need a device to send 12volts when all 3 green lights are l

 
Post new topic   Reply to topic    Matronics Email Lists Forum Index -> AeroElectric-List
View previous topic :: View next topic  
Author Message
ceengland7(at)gmail.com
Guest





PostPosted: Thu Jan 11, 2018 11:56 am    Post subject: Need a device to send 12volts when all 3 green lights are l Reply with quote

On 1/11/2018 1:37 PM, Jeffrey W. Skiba wrote:

Quote:
v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);} <![endif]--> <![endif]--> <![endif]-->
Below is the landing gear circuit,  I need a device or build one that can use the 12volts coming from the gear down and locked switches and only send 12 volts to another device[for testing a led] IF ALL 3 lights (gear down and locked)
 
I thought use 3 NPN transistors in series but it seems on my test, if I supply 12 volts to the base of the npn it still lights the led (leak though ?) with no voltage on anything else
 
I am using figure two of these examples
http://www.rason.org/Projects/transwit/transwit.htm
 


 
IDEAS ?

Look here:
https://www.google.com/search?q=3+input+and+gate+truth+table&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwikuoCK2NDYAhVM1oMKHUrVDZgQsAQIKA&biw=1920&bih=987#imgrc=GMoqi5mBR2TtpM:

Note that a quad input AND gate might be easier to find, and you can use it as a 3 input by tying the 4th input high.
Virus-free. www.avast.com [url=#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2] [/url]


- The Matronics AeroElectric-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?AeroElectric-List
Back to top
ceengland7(at)gmail.com
Guest





PostPosted: Thu Jan 11, 2018 12:03 pm    Post subject: Need a device to send 12volts when all 3 green lights are l Reply with quote

On 1/11/2018 2:01 PM, Charlie England wrote:

Quote:
On 1/11/2018 1:37 PM, Jeffrey W. Skiba wrote:

Quote:
v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);} <![endif]--> <![endif]--> <![endif]-->
Below is the landing gear circuit,  I need a device or build one that can use the 12volts coming from the gear down and locked switches and only send 12 volts to another device[for testing a led] IF ALL 3 lights (gear down and locked)
 
I thought use 3 NPN transistors in series but it seems on my test, if I supply 12 volts to the base of the npn it still lights the led (leak though ?) with no voltage on anything else
 
I am using figure two of these examples
http://www.rason.org/Projects/transwit/transwit.htm
 


 
IDEAS ?

Look here:
https://www.google.com/search?q=3+input+and+gate+truth+table&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwikuoCK2NDYAhVM1oMKHUrVDZgQsAQIKA&biw=1920&bih=987#imgrc=GMoqi5mBR2TtpM:

Note that a quad input AND gate might be easier to find, and you can use it as a 3 input by tying the 4th input high.
Here's one that works on 12V, & you get 2 spare devices in the package:
http://www.ti.com/lit/ds/symlink/cd4082b.pdf

Virus-free. www.avast.com [url=#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2] [/url]


- The Matronics AeroElectric-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?AeroElectric-List
Back to top
ceengland7(at)gmail.com
Guest





PostPosted: Fri Jan 12, 2018 11:42 am    Post subject: Need a device to send 12volts when all 3 green lights are l Reply with quote

On 1/12/2018 1:30 PM, Robert L. Nuckolls, III wrote:

Quote:
At 05:03 PM 1/11/2018, you wrote:
Quote:
Then I would lose each gear indication.  This is for an audio alert device input if the gear is not down and locked (all 3)
 
From: owner-aeroelectric-list-server(at)matronics.com (owner-aeroelectric-list-server(at)matronics.com) [ mailto:owner-aeroelectric-list-server(at)matronics.com (owner-aeroelectric-list-server(at)matronics.com)] On Behalf Of Robert L. Nuckolls, III
Sent: Thursday, January 11, 2018 3:04 PM
To: aeroelectric-list(at)matronics.com (aeroelectric-list(at)matronics.com)
Subject: Re: Need a device to send 12volts when all 3 green lights are light

  Okay, how about something like this:

[img]cid:part2.43A68B38.1440408D(at)gmail.com[/img]



  Bob . . .
What's wrong with using a CMOS 3 input AND gate (linked in an earlier email)?

Here's one that works on 12V, & you get 2 spare devices in the package:
http://www.ti.com/lit/ds/symlink/cd4082b.pdf
Virus-free. www.avast.com [url=#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2] [/url]


- The Matronics AeroElectric-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?AeroElectric-List



4b16c23.jpg
 Description:
 Filesize:  60.26 KB
 Viewed:  1667 Time(s)

4b16c23.jpg


Back to top
Display posts from previous:   
Post new topic   Reply to topic    Matronics Email Lists Forum Index -> AeroElectric-List All times are GMT - 8 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


Powered by phpBB © 2001, 2005 phpBB Group