this current sink is comming under the analog integrated circuits. i need a equations for the circuit also.
2007-03-01 00:44:45 · 2 answers · asked by kongu 1 in Science & Mathematics ➔ Engineering
An electronic component can either "sink" or "source" current. If it sources current, then current is flowing away from it to the system, if it sinks current then current is flowing to the component, from the system.
So for example, if you had a microcontroller with a pin that could either be 0V or 5V and you had a 1K resistor tied to that pin, and the other side of the resistor was 5V. When the pin of the microcontroller went to 0V, the microcontroller would be sinking 5mA of current.
Now reverse the scenario and say you have a microcontroller with a pin that has a resistor tied to it and on the other side of the resistor is ground(0V). When the pin of the micro goes to 5V, it will source 5mA of current.
2007-03-02 02:01:17 · answer #1 · answered by joshnya68 4 · 0⤊ 0⤋
Here's a good write up. They're usually called current sources and will drive a fixed current irregardles of the voltage across them.
http://en.wikipedia.org/wiki/Current_source
2007-03-01 00:51:29 · answer #2 · answered by Gene 7 · 0⤊ 0⤋