switch a 15 volt load at 2 amps

Status
Not open for further replies.
R

ron roberts

New Member
Hi, can anyone help. I need to switch a 15 volt load at 2 amps using a PNP transistor but cannot work out how to do it. I have read a lot off the Internet and seen some diagrams but it has just left my head in a mess.
Is there anyone that can post me a diagram please? It’s the resistor formula I just cannot get my head round.
I know how to identify a resistor by its colors that’s not the problem. The problem I am having is what resistors for saturation of a given transistor.

I hope the above is understandable.
 
We can't give you an answer to this until we know what your driving source looks like, i.e., wher does the signal come from that you want to use to drive this PNP? And why do you want to use a PNP? What is the 2 amp load that you refer to?
 
On another forum where this same queation was asked, I talked about transistor saturation requiring a high base current.
 
You're better off using a P-channel power MOSFET as it doesn't need any drive current, just voltage.
 
Status
Not open for further replies.

Similar threads

F
  • Question
Automatic dummy load circuit
Replies
4
Views
2K
rjenkinsgb
M
  • Question
Load cell rewiring
Replies
5
Views
2K
mapfire
M
T
  • Question
4029 and 4511, 2 digit up down counter
Replies
1
Views
387
sarahMCML
S
F
  • Question
Switching load and EMC
Replies
7
Views
2K
danadak
I
  • Question
Battery Charger with Load Sharing + Current Sensor
Replies
4
Views
2K
iptvbrazar
I
Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…