What is the Relationship Between Veb and Ie in a PNP Transistor?

Click For Summary
SUMMARY

The relationship between Veb and Ie in a PNP transistor is defined by the equation Veb = Ve - Vb, where Veb is typically 0.7 volts. To calculate the emitter current (Ie), apply Ohm's Law to both the emitter voltage (Ve) and the base voltage (Vb), treating Ie as the only unknown variable. The emitter current can be expressed as Ie = 21 * Ib, where Ib is the base current. This relationship is crucial for understanding the operation of PNP transistors in electronic circuits.

PREREQUISITES
  • Understanding of PNP transistor operation
  • Knowledge of Ohm's Law
  • Familiarity with current amplification concepts
  • Basic circuit analysis skills
NEXT STEPS
  • Study the characteristics of PNP transistors in detail
  • Learn about current gain (beta) in transistors
  • Explore circuit design involving PNP transistors
  • Investigate the impact of temperature on transistor performance
USEFUL FOR

Electronics students, circuit designers, and engineers working with transistor-based circuits will benefit from this discussion.

M Sally
Messages
3
Reaction score
0
Homework Statement
Hi,
I have a textbook problem that I've tried to solve, without any success. You see the question and my attempt below.
Relevant Equations
How to calculate VB, VE, and VC
The problem:
244045


My attempt:
5f925992-06fb-424e-b4a0-aa4f00ec95e0_screenshot-2019-05-16-at-16.21.10.jpg
 
Physics news on Phys.org
No, sorry - your approach (and the result) is wrong.
You should start with Veb=Ve-Vb=0.7 volts.
Use ohms law for Ve as well as Vb with Ie as the only unknown parameter - and solve for Ie (with Ie=21*Ib).
 
Last edited:

Similar threads

  • · Replies 17 ·
Replies
17
Views
3K
  • · Replies 9 ·
Replies
9
Views
2K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 5 ·
Replies
5
Views
3K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 11 ·
Replies
11
Views
2K
  • · Replies 13 ·
Replies
13
Views
2K
  • · Replies 3 ·
Replies
3
Views
6K
  • · Replies 21 ·
Replies
21
Views
4K