Can a power supply sink current?
Can a power supply sink current?
Yes! Sinking, or down-programming, is the ability to pull current into the positive terminal of power supply. A power supply sinks current when a lower output voltage is selected.
What is difference between current source and current sink?
Source current is the ability of the digital output/input port to supply current. Sink current is the ability of the port to receive current.
What is sinking and sourcing current?
Sink and Source are terms used to define the flow of direct current in an electric circuit. A sinking input or output circuit provides a path to ground for the electric load. A sourcing input or output provides the voltage source for the electric load.
What is sink power supply?
Devices that are sourcing power are delivering power into a load, while devices that are sinking power behave like a load, absorbing power that is being driven into them and providing a return path for current. A battery is one example of a device that is capable of both sourcing and sinking power.
Can a DC power supply sink current?
When operated as a stand-alone unit, the DC power supply can continuously sink up to 10% of its rated current for an indefinite time. This is adequate for rapidly down-programming the majority of loads connected to the output.
What is a sinking output?
A sinking digital (input/output) provides a grounded connection to the load, whereas a sourcing digital (input/output) provides a voltage source to a grounded load. Typically, a device will specify whether its interface terminals are sinking or sourcing and any necessary power supply/loading considerations.
What can be used as current sink?
An example of current sinking is when a series resistor and LED is connected between power (e.g. +5V) and a microcontroller pin. When the microcontroller pin is switched high (logic 1) then the current to the load is switched off. When the microcontroller switches the pin low (logic 0), current flows through the load.
What is source and sink in plants?
‘Source’ is the part of a plant where substances are produced (e.g. leaves for sucrose, amino acids) or enter the plant. ‘Sink’ refers to the part of the plant where the substrate can be stored (e.g. roots or stem for starch).
What does current sinking mean?
Current sinking, also referred to as down-programming, is the ability to pull current into the positive terminal of the DC power supply. For example, the power supply pulls or sinks current into the positive terminal whenever a lower output voltage is programmed.
A power SUPPLY usually can source current, and the load can sink current. Click to expand… Pulling the VOLTAGE down to zero generally is no good idea, because the job of the regulator is to regulate a constant output voltage. Pulling down the output to any other voltage will end in current overload.
What is the difference between sink current and source current?
References to sink and source current are made relative to the current switching device inside the system. In most cases, that’s a simple transistor. Source current refers to the ability of the digital output port to supply current. Sink current refers to the ability of the port to receive current. The following figure may help.
What does “sinking max output current” mean?
Your use of the phrase “sinking max output current” is contradictory. Sink means how much current the port an absorb, not what it can supply (source.) So I think you need to look at the specs for your device again, or contact the manufacturer.
What is the sink current of a digital port?
Sink current refers to the ability of the port to receive current. The following figure may help. In the above, our goal is to light a simple light-emitting diode using the switching ability of a digital output port.
