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Yunting Yin
Yunting Yin

Opto-electronics - Electrical Revision Page
Opto-electronics - Electrical Revision Page

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... A preformatted spreadsheet on the lab computer for data entry (a copy is reproduced for you at the end of this document). A worksheet containing the questions (a copy will be provided at the lab). ...
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Current source



A current source is an electronic circuit that delivers or absorbs an electric current which is independent of the voltage across it.A current source is the dual of a voltage source. The term constant-current 'sink' is sometimes used for sources fed from a negative voltage supply. Figure 1 shows the schematic symbol for an ideal current source, driving a resistor load. There are two types - an independent current source (or sink) delivers a constant current. A dependent current source delivers a current which is proportional to some other voltage or current in the circuit.
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