Contents
How do you calculate resistance in spice?
calculate output resistance in spice USE . AC anylysis plus a . NET command, plot ZOUT(m) ZOUT(i) ZOUT(r), you will magnitud.
How do you measure resistance in a source?
The source impedance is measured by firstly measuring the open circuit voltage Voc. Then you load the source by a resistance RL which is known. Then measure the the load voltage VL. Then you can calculate RS= ( Voc – VL)/ (VL/ RL).
What is the use of current mirror circuit?
A current mirror is a circuit designed to copy a current through one active device by controlling the current in another active device of a circuit, keeping the output current constant regardless of loading. The current being “copied” can be, and sometimes is, a varying signal current.
How to find output resistance of current mirror?
I am being asked to find the output resistance of the current mirror below. the correct answer is supposed to be R_out = 103k ohms. but when am simulating the circuit, I get R_out = 3.82k ohms. Can somebody please help me and tell what wrong is going on????
How is the regulation point of a current mirror set?
REVIEW: A current mirror is a transistor circuit that regulates the current through a load resistance, the regulation point is set by a simple resistor adjustment. Transistors in a current mirror circuit must be maintained at the same temperature for precise operation.
Why is a mirror circuit called a current sinking circuit?
The current mirror circuit shown with two NPN transistors in Figure above (a) is sometimes called a current-sinking type, because the regulating transistor conducts current to the load from ground (“sinking” current), rather than from the positive side of the battery (“sourcing” current).
How are transistors maintained in a current mirror circuit?
A current mirror is a transistor circuit that regulates the current through a load resistance, the regulation point is set by a simple resistor adjustment. Transistors in a current mirror circuit must be maintained at the same temperature for precise operation. When using discrete transistors, you may glue their cases together to do this.