# US 2017/0288495 A1 · Printed wiring board, circuit board, and control unit

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- Number: US 2017/0288495 A1
- Document ID: US20170288495A1
- Status: Published application
- Kind: A1
- Application number: 15/509,308
- Filed: 2014-12-22
- Published: 2017-10-05
- Earliest claimed: 2014-12-22
- Assignees: Mitsubishi Electric Corporation
- Applicants: Mitsubishi Electric Corporation
- Inventors: Takuma AOSHIMA
- Web page: https://patentgrep.com/patent/US20170288495A1

## CPC

- H02M 7/003: {Constructional details, e.g. physical layout, assembly, wiring or busbar connections}
- F24F 11/74: for controlling air flow rate or air velocity
- F24F 13/1426: {characterised by actuating means}
- H02K 5/225: {Terminal boxes or connection arrangements (specially adapted for submersible motors H02K5/132)}
- H05K 1/02: Details
- H05K 1/0262: {Arrangements for regulating voltages or for using plural voltages}
- H05K 1/0269: {for visual or optical inspection}
- H05K 1/029: {having a programmable lay-out, i.e. adapted for choosing between a few possibilities}
- F24F 2013/1433: {with electric motors}
- H02M 7/106: {With physical arrangement details}
- H05K 1/181: associated with surface mounted components
- H05K 2201/09936: Marks, inscriptions, etc. for information
- H05K 2201/1009: Electromotor
- H05K 2201/10189: Non-printed connector
- H05K 2201/10363: Jumpers, i.e. non-printed cross-over connections
- H05K 2201/10522: Adjacent components
- H05K 2203/173: Adding connections between adjacent pads or conductors, e.g. for modifying or repairing
- H02M: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF (transformers H01F; dynamo-electric converters H02K47/00; controlling transformers, reactors or choke coils, control or regulation of electric motors, generators or dynamo-electric converters H02P)
- F24F: AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING (removing dirt or fumes from areas where they are produced B08B15/00; vertical ducts for carrying away waste gases from buildings E04F17/02; tops for chimneys or ventilating shafts, terminals for flues F23L17/02)
- H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53})
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS

## Abstract

A printed wiring board includes a primary circuit that receives power supply of a high voltage from a high power source; a pattern for a low voltage circuit that is used when a low voltage component used for a low voltage lower than the high voltage and a power supply terminal block that receives power supply of the low voltage from a low power source are provided; a pattern for a common circuit that is used when a high voltage component used for the high voltage and the low voltage that insulates the pattern for the primary circuit from the pattern for the common circuit; a first insulator which insulates the pattern of the primary circuit from the pattern of the common circuit; and a second insulator that insulates the pattern for the common circuit from the pattern for the low voltage circuit.

## Claims

### Claim 1

A printed wiring board comprising:
a pattern for a primary circuit that receives a power supply with a high voltage from a high power source;
a pattern for a component mounting circuit, which includes a low voltage circuit and a common circuit;
a pattern for the low voltage circuit that receives a power supply of a low voltage lower than the high voltage;
a pattern for the common circuit that is used in a case where a high voltage component used for the high voltage is provided and also in a case where a low voltage component used on the low voltage is provided;
a first insulator that insulates the pattern for the primary circuit from the pattern for the common circuit; and
a second insulator that insulates the pattern for the common circuit from the pattern for the low voltage circuit, wherein
the low voltage circuit is used in a case where the low voltage component is mounted thereon, and the common circuit is used when either one of the low voltage component and the high voltage component is mounted thereon.

### Claim 2 (depends on 1)

A circuit board that is provided with the printed wiring board according to claim 1, comprising:
a first jumper that connects the pattern for the primary circuit to the pattern for the common circuit, wherein
the high voltage component is provided on the common circuit.

### Claim 3 (depends on 1)

A circuit board that is provided with the printed wiring board according to claim 1, comprising:
a second jumper that connects the pattern for the common circuit to the pattern for the low voltage circuit, wherein
the low voltage component and a power supply terminal block for receiving the power supply of the low voltage are provided on the low voltage circuit.

### Claim 4 (depends on 3)

The circuit board according to claim 3, wherein
the second jumper is a chip-type jumper, and
a distance obtained by adding a creepage distance of the chip-type jumper on a live side of the low voltage component to a creepage distance of the chip-type jumper on a neutral side of the low voltage component is equal to or larger than an insulation distance for the low voltage.

### Claim 5 (depends on 2)

The circuit board according to claim 2, wherein
the high voltage component is a terminal block for connecting to a high voltage motor used on the high voltage, and
the low voltage component is a connector for connecting to a low voltage motor used on the low voltage.

### Claim 6 (depends on 2)

The circuit board according to claim 2, wherein
a region on which the high voltage component is provided partially overlaps with a region on which the low voltage component is provided.

### Claim 7 (depends on 6)

The circuit board according to claim 6, comprising:
a silk printing that has information on the high voltage component and the low voltage component, wherein
the information on the low voltage component is printed so as to be adjacent to the region on which the low voltage component is provided and so as to be positioned within the region on which the high voltage component is provided, and
the information on the high voltage component is printed so as to be adjacent to the region on which the high voltage component is provided and so as to be positioned within the region on which the low voltage component is provided.

### Claim 8 (depends on 5)

A control unit that is provided with the circuit board according to claim 5 and that controls opening/closing of a duct of a duct air conditioner, wherein
the high voltage motor and the low voltage motor are damper motors that drive dampers for opening/closing the ducts.

### Claim 9 (depends on 3)

The circuit board according to claim 3, wherein
the high voltage component is a terminal block for connecting to a high voltage motor used on the high voltage, and
the low voltage component is a connector for connecting to a low voltage motor used on the low voltage.

### Claim 10 (depends on 3)

The circuit board according to claim 3, wherein
a region on which the high voltage component is provided partially overlaps with a region on which the low voltage component is provided.