Concept explainers
The currents

Answer to Problem 13.1EP
The currents are:
Explanation of Solution
Given:
The bias circuit and input stage portion of 741 op-amp circuit is shown below.
Figure 1
Resistance
Bias voltages are:
The base current is considered to be 0 A.
The base emitter voltages are:
Calculation:
Consider the given circuit. The formula for reference current that is established in the circuit branch consists of transistors
Transistors
Where,
Substitute the given values in the above equation.
By trial and error method,
For the given circuit, if the base current is neglected, then the collector current through transistors
Substituting the values,
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Chapter 13 Solutions
MICROELECT. CIRCUIT ANALYSIS&DESIGN (LL)
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