US 2026/0280445 A1 · IN-RUSH CURRENT LIMITER

Abstract

Apparatuses and devices in heating, ventilating, and air conditioning systems are described. A device can include a rectifier including a first input interface configured to receive a first input signal and a second input interface configured to receive a second input signal. The device can further include a half-wave path configured to convert one of the first input signal and the second input signal into a half-wave output. The device can further include a low-pass filter (LPF). The device can further include a circuit connected between a rectifier in the power supply and the LPF. The circuit can include a plurality of resistance paths. The circuit can be configured to receive the half-wave output from the rectifier. The circuit can be further configured to, based on a current of the half-wave output, pass the half-wave output through one of the plurality of resistance paths.

Claims20

Dependent claims

An apparatus comprising:

a rectifier comprising:
a first input interface configured to receive a first input signal;
and
a second input interface configured to receive a second input signal;
a half-wave path configured to convert one of the first input signal and the second input signal into a half-wave output;
a low-pass filter (LPF);
and
a circuit connected between the rectifier and the LPF, wherein the circuit comprises a plurality of resistance paths, and the circuit is configured to:
receive the half-wave output from the rectifier;
and
based on a current of the half-wave output, pass the half-wave output through one of the plurality of resistance paths.

8 more elements

An actuator device comprising:

a motor;
an actuator circuit configured to control the motor to drive an actuated part of a heating, ventilating, and air conditioning (HVAC) system;
and
a power supply configured to supply power to the actuator circuit, the power supply comprising:
a rectifier including:
a first input interface configured to receive a first input signal;
a second input interface configured to receive a second input signal;
a half-wave path configured to convert one of the first input signal and the second input signal into a half-wave output;
a low-pass filter (LPF);
and
a circuit connected between the rectifier and the LPF, wherein the circuit comprises a plurality of resistance paths, and the circuit is configured to:
receive the half-wave output from the rectifier;
and
based on a current of the half-wave output, pass the half-wave output through one of the plurality of resistance paths.

11 more elements

An actuator device comprising:

a motor;
an actuator circuit configured to control the motor to drive an actuated part of a heating, ventilating, and air conditioning (HVAC) system;
and
a power supply configured to supply power to the actuator circuit, the power supply comprising:
a rectifier including an input interface configured to receive an input signal;
a half-wave path configured to convert the input signal into a half-wave output;
a low-pass filter (LPF);
and
a circuit connected between the rectifier and the LPF, wherein the circuit comprises a plurality of resistance paths, and the circuit is configured to:
receive the half-wave output from the rectifier;
and
based on a current of the half-wave output, pass the half-wave output through one of the plurality of resistance paths.

9 more elements

Dependencies are inferred from the claim text.

In-rush current limiter

Life of this patent

In-rush current limiter

Life of this patent

Abstract

Claims20