Load status indicator
AssigneeGeorge Sortiriou
InventorGeorge Sotiriou
Life of this patent
Estimating the term…
Abstract
A load status indicator is disclosed wherein a green light-emitting diode of a bi-color light-emitting diode lights up when power is available to but not being used by a monitored device, whereas a red light-emitting diode of the bi-color light-emitting diode lights up when the monitored device is drawing current. The load status indicator utilizes a coil in series with the monitored device, a reed switch controlled by the coil, and field-effect transistors to control which light-emitting diode lights up depending on whether power is available and whether the monitored device is drawing current.
Claims18
A load status indicator comprising:
- a first transistor and a second transistor;
- a first visual status indicator and a second visual status indicator;
- wherein the load status indicator is connected to a voltage supply and a load;
- wherein the load status indicator is configured to bias the second transistor to low impedance and to bias the first transistor to high impedance when current is not flowing through the load;
- wherein the load status indicator is configured to bias the second transistor to high impedance and to bias the first transistor to low impedance when current is flowing through the load;
- wherein the load status indicator is configured to cause the first visual status indicator to turn on when the first transistor is biased to low impedance;
- and
- wherein the load status indicator is configured to cause the second visual status indicator to turn on when the second transistor is biased to low impedance.
A load status indicator comprising:
- a first visual status indicator and a second visual status indicator;
- wherein the visual status indicators are not connected in series with a load;
- wherein the first visual status indicator is configured to indicate when power is available to the load but current is not flowing through the load;
- and
- wherein the second visual status indicator is configured to indicate when power is available to the load and current is flowing through the load.
A load status indicator comprising:
- a current-sensing component connected in series with a load;
- an indicating circuit connected in parallel with the series of load and current-sensing component;
- wherein the indicating component comprises a first visual status indicator and a second visual status indicator;
- wherein the first visual status indicator is configured to turn on when power is available to the load and indicating circuit, but a threshold current is not flowing through the current-sensing component, and to turn off when a threshold current is flowing through the current-sensing component;
- wherein the second visual status indicator is configured to turn on when power is available to the load and indicating circuit, and a threshold current is flowing through the current-sensing component, and to turn off when a threshold current is not flowing through the current-sensing component.
Dependencies are inferred from the claim text.