Emitter current of a NPN transistor.

A saturated NPN transistor has a base to emitter-applied voltage of 0.6V. The collector to emitter voltage is 0.2V. The collector current is 12 mA. The beta value of the transistor is 30. What is the emitter current? a) 2.5 mA b) Greater than 12 mA c) Cannot be determined by the information provided See attached file for full problem description.

Desired load thru a current source

Consider the following circuit. As shown, a lossy current source drives a 1 kohm load by means of a voltage divider circuit. It is desired to have 5 mA flow through the load. R1 and R2 can be assigned any value you wish. Part 1: What is the smallest value that R2 can have? Part 2: What is the largest value that R1 can be given? a) Part 1) R2>750 OHMS; Part 2) R1 < 800 OHMS b) Part 1) R2>800 OHMS; Part 2) R1 < 750 OHMS c) Part 1) R2>0 OHMS; Part 2) R1 < 800 OHMS d) Part 1) R2>0 OHMS; Part 2) R1 < 750 OHMS See attached file for full problem description.

V and I of the circuit

Refer to the following circuit: Assume ideal voltage sources. Find a) VBG ; b) I2 See attached file for full problem description. a) V(bg)= -3V; I2= -1A b) V(bg)= -2V; I2= 1A c) V(bg)= 3V; I2= 1A

Graph source and load voltage of a circuit

Consider the following circuit. The sinusoidal source voltage is vs(t) = 20 * sin(2*pi*t). The diode is ideal. The correct sketch of the source voltage and the load voltage vL(t) as a function of time will then be: Please show the source voltage in solid and the load voltage in dashed See attached file for full problem description.

Find Ix and Iy in the circuit

In the following circuit find Ix and Iy. HINT: First find Ix by replacing the transformer and load at points x,x with the transformed load impedance.) See attached file for full problem description.