Ford Truck Fanatics  



Home Gallery TOTM New Posts My Threads / My Replies Links Sponsors Calendar Arcade Calculators Fliers
Go Back   Ford Truck Fanatics > General > Hobbies

Hobbies For non-truck related hobbies

Reply
 
Thread Tools Display Modes
  #1  
Old 06-26-2016, 03:54 PM
CowboyBilly9Mile's Avatar
CowboyBilly9Mile CowboyBilly9Mile is offline
Charter Member
 
Join Date: Jan 2007
Location: E WA state.
Posts: 6,901
CowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond repute
Electronics question - variable resistors/pots

Same general question, two different scenarios.

a) trim pot used to adjust voltage to the base of a transistor......the center/variable end goes to the base, one end on the carbon band (for lack of better desc) goes to the supply voltage and the other goes to ground.

Q. Why the ground connection? Stability? To establish a possibly used maximum resistance between the supply voltage which may keep some component of the supply, such as an IC, active?

b) trim pot in series used to adjust voltage, the center/variable is tied to one end of the carbon band and together these form one connection; the other connection is the other end of the carbon band.

Q. Why is one end of the carbon band tied to the center/variable connection and together they form one connection? Again, stability?
__________________
-Bill

-Life is far too short to be serious all the time. So if you can't stop and laugh at yourself along the way, give me a call and I'll do it for you.

04 Ranger Fx4 Level II, 5R55E, Sonic Blue Pearl, loaded.


Useful Ford Vehicle Resources:

Owners Manuals >>> http://www.fleet.ford.com/partsandse...owner-manuals/
Build Information (click on "vehicle") >>> https://www.etis.ford.com/
Wiring schematics and TSB's (click on "technical information") >>> http://bbbind.com/
Repair guides, includes schematics w/connector pinouts >>> http://www.autozone.com/repairinfo/r...nfoLanding.jsp
Reply With Quote
Sponsored Links
  #2  
Old 06-26-2016, 07:51 PM
DNFXDLI's Avatar
DNFXDLI DNFXDLI is offline
The Token Canadian

Admin
 
Join Date: Jan 2009
Location: The Great White North
Posts: 48,612
DNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond repute
If the pot ends are tied to the supply and ground, it forms a voltage divider...if you are only using 2 pins you wind up controlling current...like a rheostat.

On the connection to ground, you are using that as the reference..and there will always be a current flow from the two fixed ends of the pot.
__________________
Quote:
Originally Posted by nobodyspecial View Post
The end is not a fixed point, Duncan. It is organic, fluid, ever changing.
Quote:
Originally Posted by fatherdoug View Post
I prefer to call it a passion, rather than a problem. That way it is self-justified.
Quote:
Originally Posted by TexasNomad View Post
I need your full mailing address, so I can fedex you a wet fart.

Reply With Quote
  #3  
Old 06-26-2016, 08:21 PM
CowboyBilly9Mile's Avatar
CowboyBilly9Mile CowboyBilly9Mile is offline
Charter Member
 
Join Date: Jan 2007
Location: E WA state.
Posts: 6,901
CowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond repute
Quote:
Originally Posted by DNFXDLI View Post
If the pot ends are tied to the supply and ground, it forms a voltage divider.
Makes perfect sense.

Quote:
Originally Posted by DNFXDLI View Post
if you are only using 2 pins you wind up controlling current...like a rheostat.
Is this the ans to Q #2?

Quote:
Originally Posted by DNFXDLI View Post
On the connection to ground, you are using that as the reference..and there will always be a current flow from the two fixed ends of the pot.
That's along the lines of what I was thinking.
__________________
-Bill

-Life is far too short to be serious all the time. So if you can't stop and laugh at yourself along the way, give me a call and I'll do it for you.

04 Ranger Fx4 Level II, 5R55E, Sonic Blue Pearl, loaded.


Useful Ford Vehicle Resources:

Owners Manuals >>> http://www.fleet.ford.com/partsandse...owner-manuals/
Build Information (click on "vehicle") >>> https://www.etis.ford.com/
Wiring schematics and TSB's (click on "technical information") >>> http://bbbind.com/
Repair guides, includes schematics w/connector pinouts >>> http://www.autozone.com/repairinfo/r...nfoLanding.jsp
Reply With Quote
  #4  
Old 06-26-2016, 08:29 PM
DNFXDLI's Avatar
DNFXDLI DNFXDLI is offline
The Token Canadian

Admin
 
Join Date: Jan 2009
Location: The Great White North
Posts: 48,612
DNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond repute
Yes regarding question 2.

Also, I'm assuming you are using linear devices...Logs or reverse Logs or whatever the hell else they are making now would be entertaining to say the least
__________________
Quote:
Originally Posted by nobodyspecial View Post
The end is not a fixed point, Duncan. It is organic, fluid, ever changing.
Quote:
Originally Posted by fatherdoug View Post
I prefer to call it a passion, rather than a problem. That way it is self-justified.
Quote:
Originally Posted by TexasNomad View Post
I need your full mailing address, so I can fedex you a wet fart.

Reply With Quote
  #5  
Old 06-26-2016, 08:40 PM
CowboyBilly9Mile's Avatar
CowboyBilly9Mile CowboyBilly9Mile is offline
Charter Member
 
Join Date: Jan 2007
Location: E WA state.
Posts: 6,901
CowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond repute
Quote:
Originally Posted by DNFXDLI View Post
Yes regarding question 2.

Also, I'm assuming you are using linear devices...Logs or reverse Logs or whatever the hell else they are making now would be entertaining to say the least

Ok, so on the 3-pin pot, two pins become one as descriobed, and the device now functions with those two now counting as one, and then the one other pin, and regulates current. Right?
__________________
-Bill

-Life is far too short to be serious all the time. So if you can't stop and laugh at yourself along the way, give me a call and I'll do it for you.

04 Ranger Fx4 Level II, 5R55E, Sonic Blue Pearl, loaded.


Useful Ford Vehicle Resources:

Owners Manuals >>> http://www.fleet.ford.com/partsandse...owner-manuals/
Build Information (click on "vehicle") >>> https://www.etis.ford.com/
Wiring schematics and TSB's (click on "technical information") >>> http://bbbind.com/
Repair guides, includes schematics w/connector pinouts >>> http://www.autozone.com/repairinfo/r...nfoLanding.jsp
Reply With Quote
  #6  
Old 06-26-2016, 08:58 PM
DNFXDLI's Avatar
DNFXDLI DNFXDLI is offline
The Token Canadian

Admin
 
Join Date: Jan 2009
Location: The Great White North
Posts: 48,612
DNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond repute
Yes.
__________________
Quote:
Originally Posted by nobodyspecial View Post
The end is not a fixed point, Duncan. It is organic, fluid, ever changing.
Quote:
Originally Posted by fatherdoug View Post
I prefer to call it a passion, rather than a problem. That way it is self-justified.
Quote:
Originally Posted by TexasNomad View Post
I need your full mailing address, so I can fedex you a wet fart.

Reply With Quote
  #7  
Old 06-26-2016, 09:03 PM
CowboyBilly9Mile's Avatar
CowboyBilly9Mile CowboyBilly9Mile is offline
Charter Member
 
Join Date: Jan 2007
Location: E WA state.
Posts: 6,901
CowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond repute
Excellent, thank you for answering the Q's it's always most appreciated!
__________________
-Bill

-Life is far too short to be serious all the time. So if you can't stop and laugh at yourself along the way, give me a call and I'll do it for you.

04 Ranger Fx4 Level II, 5R55E, Sonic Blue Pearl, loaded.


Useful Ford Vehicle Resources:

Owners Manuals >>> http://www.fleet.ford.com/partsandse...owner-manuals/
Build Information (click on "vehicle") >>> https://www.etis.ford.com/
Wiring schematics and TSB's (click on "technical information") >>> http://bbbind.com/
Repair guides, includes schematics w/connector pinouts >>> http://www.autozone.com/repairinfo/r...nfoLanding.jsp
Reply With Quote
  #8  
Old 06-26-2016, 09:04 PM
DNFXDLI's Avatar
DNFXDLI DNFXDLI is offline
The Token Canadian

Admin
 
Join Date: Jan 2009
Location: The Great White North
Posts: 48,612
DNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond repute
Anytime Bill...just remember that I have not farted around with this stuff for 30+ years.
__________________
Quote:
Originally Posted by nobodyspecial View Post
The end is not a fixed point, Duncan. It is organic, fluid, ever changing.
Quote:
Originally Posted by fatherdoug View Post
I prefer to call it a passion, rather than a problem. That way it is self-justified.
Quote:
Originally Posted by TexasNomad View Post
I need your full mailing address, so I can fedex you a wet fart.

Reply With Quote
  #9  
Old 07-24-2016, 07:47 PM
CowboyBilly9Mile's Avatar
CowboyBilly9Mile CowboyBilly9Mile is offline
Charter Member
 
Join Date: Jan 2007
Location: E WA state.
Posts: 6,901
CowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond reputeCowboyBilly9Mile has a reputation beyond repute
Well darn, smoked my only 10K pot.

Edit: Stunk worse than the fried IC to boot.
__________________
-Bill

-Life is far too short to be serious all the time. So if you can't stop and laugh at yourself along the way, give me a call and I'll do it for you.

04 Ranger Fx4 Level II, 5R55E, Sonic Blue Pearl, loaded.


Useful Ford Vehicle Resources:

Owners Manuals >>> http://www.fleet.ford.com/partsandse...owner-manuals/
Build Information (click on "vehicle") >>> https://www.etis.ford.com/
Wiring schematics and TSB's (click on "technical information") >>> http://bbbind.com/
Repair guides, includes schematics w/connector pinouts >>> http://www.autozone.com/repairinfo/r...nfoLanding.jsp

Last edited by CowboyBilly9Mile; 07-24-2016 at 07:58 PM.
Reply With Quote
  #10  
Old 07-24-2016, 08:12 PM
DNFXDLI's Avatar
DNFXDLI DNFXDLI is offline
The Token Canadian

Admin
 
Join Date: Jan 2009
Location: The Great White North
Posts: 48,612
DNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond reputeDNFXDLI has a reputation beyond repute
So it did limit the current once it released the magic smoke
__________________
Quote:
Originally Posted by nobodyspecial View Post
The end is not a fixed point, Duncan. It is organic, fluid, ever changing.
Quote:
Originally Posted by fatherdoug View Post
I prefer to call it a passion, rather than a problem. That way it is self-justified.
Quote:
Originally Posted by TexasNomad View Post
I need your full mailing address, so I can fedex you a wet fart.

Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 08:45 PM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Ford Truck Fanatics is not affiliated with or endorsed by Ford Motor Company.