US 11,843,237 B2
Device for detecting an electric arc in an electronic assembly using a modified pierce oscillator
Jürgen Scherschmidt, Munich (DE)
Assigned to WEBASTO SE, Stockdorf (DE)
Appl. No. 17/606,689
Filed by Webasto SE, Stockdorf (DE)
PCT Filed Mar. 17, 2020, PCT No. PCT/EP2020/057184
§ 371(c)(1), (2) Date Oct. 26, 2021,
PCT Pub. No. WO2020/221501, PCT Pub. Date Nov. 5, 2020.
Claims priority of application No. 102019111139.0 (DE), filed on Apr. 30, 2019.
Prior Publication US 2022/0216684 A1, Jul. 7, 2022
Int. Cl. H02H 1/00 (2006.01); H02H 3/16 (2006.01)
CPC H02H 1/0015 (2013.01) [H02H 3/16 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A device for detecting an electric arc in an electronic assembly, comprising:
a transmission unit configured to generate an output signal, and
an evaluation unit configured to receive the output signal,
wherein the transmission unit and the evaluation unit are connected to one another,
wherein the transmission unit comprises an oscillator unit, which is configured to generate the output signal having at least one of: a frequency and an amplitude,
wherein the evaluation unit is configured to detect deviations, caused by an arc, in the output signal of the transmission unit,
wherein the oscillator unit is designed as an LC oscillator comprising a frequency-determining inductance, which is constructed as a detector coil, and
wherein the detector coil is designed as at least one of: a PCB coil and in a spiral shape.