Matronics Email Lists Forum Index Matronics Email Lists
BBS 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 li

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





PostPosted: Thu Jan 11, 2018 11:39 am    Post subject: Need a device to send 12volts when all 3 green lights are li Reply with quote

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

[img]cid:image002.png(at)01D38AE1.28EBC0D0[/img]

IDEAS ?


[img]cid:image001.png(at)01D38AB2.2D717B60[/img]


- 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



image001.png
 Description:
 Filesize:  132.3 KB
 Viewed:  407 Time(s)

image001.png



image002.png
 Description:
 Filesize:  2.67 KB
 Viewed:  407 Time(s)

image002.png


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