# US 12,113,351 B2 · Circuit breaker having a current sensing circuit, control circuit, comparison circuit, electric relay and latching circuit

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- Number: US 12,113,351 B2
- Document ID: US12113351B2
- Status: Granted
- Kind: B2
- Application number: 17/845,064
- Filed: 2022-06-21
- Published: 2023-12-21
- Granted: 2024-10-08
- Earliest claimed: 2022-06-21
- Assignees: Gemstone Lights
- Applicants: Dallen Tate Leavitt
- Inventors: Dallen Tate Leavitt
- Web page: https://patentgrep.com/patent/US12113351B2

## CPC

- H02H 3/20: responsive to excess voltage
- H02H 3/202: {for DC systems}
- H02H 1/0007: {concerning the detecting means (in general G01R or other subclasses of G01; reed switches H01H71/2445)}
- H02H 7/222: {for switches}
- H02H 3/006: {Calibration or setting of parameters}
- H02H 3/087: for DC applications
- H02H: EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS (indicating or signalling undesired working conditions G01R, e.g. G01R31/00, G08B; locating faults along lines G01R31/08; emergency protective devices H01H)

## Abstract

A circuit breaker for protecting against a short circuit and over current. The circuit breaker includes a current sensing circuit configured to determine an input voltage. The circuit breaker also includes a control circuit configured to set a threshold voltage. The circuit breaker further includes a comparison circuit configured to compare the input voltage to the threshold voltage. The circuit breaker, in addition, includes a voltage output circuit configured to output an output voltage based on the comparison circuit.

## Claims

### Claim 1

A circuit breaker comprising:
a current sensing circuit configured to determine an input voltage;
a control circuit configured to set a threshold voltage;
a comparison circuit configured to compare the input voltage to the threshold voltage; and
a voltage output circuit configured to output an output voltage based on an output of the comparison circuit,
further comprising,
a latching circuit configured to control an electric relay based on the output of the comparison circuit;
the electric relay configured to open and close the voltage output circuit based on an output of the latching circuit; and
the voltage output circuit configured to output the output voltage based on an output of the electric relay.

### Claim 2 (depends on 1)

The circuit breaker of claim 1, further comprising:
a protective circuit configured to consume extra voltage produced when the electric relay is closed.

### Claim 3 (depends on 1)

The circuit breaker of claim 1, wherein the latching circuit comprises a NPN styled triode and a PNP styled triode.

### Claim 4 (depends on 1)

The circuit breaker of claim 1, wherein the latching circuit is configured to open the electric relay when the input voltage is greater than the threshold voltage and to close the electric relay when the input voltage is less than the threshold voltage.

### Claim 5 (depends on 1)

The circuit breaker of claim 1, wherein the latching circuit is configured to an accuracy tolerance of +/−5% of rated current.

### Claim 6 (depends on 1)

The circuit breaker of claim 1, wherein the control circuit comprises an adjustable resistor configured to set the threshold voltage.

### Claim 7 (depends on 1)

The circuit breaker of claim 1, wherein the voltage output circuit outputs the output voltage when the comparison circuit determines that the input voltage is less than the threshold voltage.

### Claim 8 (depends on 1)

The circuit breaker of claim 1, wherein the voltage output circuit is cut off when the comparison circuit determines that the input voltage is greater than the threshold voltage.

### Claim 9 (depends on 1)

The circuit breaker of claim 1, wherein the voltage output circuit comprises a low wattage circuit.