Load status indicator
First Claim
Patent Images
1. A load status indicator comprising:
- a first visual status indicator configured to indicate when power is available to a load but current is not flowing through the load; and
a second visual status indicator configured to indicate when power is available to the load and current is flowing through the load;
wherein the visual status indicators are not connected in series with the load; and
wherein a threshold current is determined by a ratio of two resistors.
0 Assignments
0 Petitions
Accused Products
Abstract
A load status indicator is disclosed for determining whether power is available to, and current is flowing through, a load. A first visual status indicator may light up when power is available to the load but current is not flowing through the load. A second visual status indicator may light up when power is available to the load and current is flowing through the load. A bi-color light-emitting diode may comprise the first and second visual status indicators. Transistors may be used to permit or prevent current from flowing through the visual status indicators. In some embodiments, a reed switch or a hall-effect sensor may be used to determine whether current is flowing through the load.
62 Citations
18 Claims
-
1. A load status indicator comprising:
-
a first visual status indicator configured to indicate when power is available to a load but current is not flowing through the load; and a second visual status indicator configured to indicate when power is available to the load and current is flowing through the load; wherein the visual status indicators are not connected in series with the load; and
wherein a threshold current is determined by a ratio of two resistors. - View Dependent Claims (2, 3, 4, 5)
-
-
6. 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, the indicating circuit comprising; a first visual status indicator 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 the threshold current is flowing through the current-sensing component;
wherein the threshold current is determined by a ratio of two resistors; anda second visual status indicator configured to turn on when power is available to the load and indicating circuit, and the threshold current is flowing through the current-sensing component, and to turn off when the threshold current is not flowing through the current-sensing component. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13)
-
-
14. A load status indicator comprising:
-
a current-sensing component; a first transistor and a second transistor; a first visual status indicator and a second visual status indicator; wherein the load status indicator is configured to bias the first transistor to high impedance and to bias the second transistor to low impedance when a threshold current is not flowing through the current-sensing component; wherein the load status indicator is configured to bias the first transistor to low impedance and to bias the second transistor to high impedance when the threshold current is flowing through the current-sensing component; 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. - View Dependent Claims (15, 16, 17, 18)
-
Specification