Invention Grant
- Patent Title: Solid state switch relay
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Application No.: US15522195Application Date: 2015-11-20
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Publication No.: US10044351B2Publication Date: 2018-08-07
- Inventor: Jørgen Selmer Jensen
- Applicant: BANG & OLUFSEN A/S
- Applicant Address: DK Struer
- Assignee: BANG & OLUFSEN A/S
- Current Assignee: BANG & OLUFSEN A/S
- Current Assignee Address: DK Struer
- Agency: Harness, Dickey & Pierce, P.L.C.
- Agent Anthony G. Fussner
- Priority: DK201400681 20141124
- International Application: PCT/EP2015/077188 WO 20151120
- International Announcement: WO2016/083251 WO 20160602
- Main IPC: H03K17/16
- IPC: H03K17/16 ; H03F3/183 ; G05F3/26 ; H03F3/21

Abstract:
A solid state relay and a method for controlling a signal path between an AC-signal output and a load in a power amplifier assembly are disclosed. The relay comprises a first and a second MOSFET having a common gate junction, a common source junction and wherein and wherein a drain terminal of a first MOSFET and a drain terminal of a second MOSFET form relay terminals. The solid state relay further comprises a control circuit comprising a positive side comprising a first controlled current generator configured to provide a first control current to the gate junction, and a negative side comprising a current mirror circuit configured to sink a second current from the source junction. Hereby, a generic solid state speaker relay has been disclosed. The relay performs up to the most stringent demands regarding pop/click on high quality products. It can be used to ground wire break, hot wire break and BTL (Bridge Tied Load) break. The design is rather tolerable to different MOSFETs and very competitive in quality and price.
Public/Granted literature
- US20180006641A1 SOLID STATE SWITCH RELAY Public/Granted day:2018-01-04
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