Experiment 5: Widlar& simple Current Sources and active load 1. Objectives 1. Da

Question

Experiment 5: Widlar& simple Current Sources and active load 1. Objectives 1. Daiga and widlar arrest 2. Design and teat simple Current Sourcs (curreat mirrer searce 3.To Constract CE Amplifier with active load measure voltage 3.Theory Carrent sources Twe-Transistor Current Source 2. Parts and equipment -DC powar supply, DMM cilloscope and a function gemerator You may use transistors 2N3904 (NPN) and 2N3906 ( PNP) For large 1-t0ka potensiometer 2-100 large areas and re dificalt to beit A is the cross section area and L h he length LM3046/LM3086 Transistor Arrays @a len tate B E volagc of QL A nnale. refermce oument IE 73 72

Explanation / Answer

1) A current source is defined as an electronic circuit that delivers /absorbs the electric current. This current will remain constant independent of the load placed across it

2) The difference lies in the fact that the ideal voltage source has ideal voltage source has zero internal resistance and ideal current source has infinite internal resistance.

3)An ideal current source is a two terminal device which will supply same current to load connected across its terminals. An ideal voltage source is a two terminal device whose voltage at any instant of time is constant and doesnot depend on the current drawn from it.

4)A voltage source circuit with a voltage V and a resistance R in series can be changed to a current source with value I = V/R in parallel with resistance R

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