The HF ignition does not generate the spark via an arc but through a high-frequency plasma. A high-frequency pulse passes through the spark plug into the combustion chamber and generates a plasma there.
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Material system for increasing the safety of U-locks and lock boxes with highly wear-resistant metallic or metal-ceramic materials. This hinder the with the s.g. Hardpaint mixture filled longitudinal groove in the hanger sawing, drilling, or cutting.
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OPoLiCom is a system that continously monitors the input impedance over the frequency. By using OFDM with strong channel coding, the lack of a part of the transmission frequencies can be compensated without information of the reciever.
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