Abstract: A system, device, and method for passive collection of atmospheric carbon dioxide is disclosed. The device includes a release chamber having a sorbent regeneration system with a power supply, and a capture structure coupled to the release chamber, having a plurality of disks coupled to and spaced along at least one collapsible support. Each disk has an electro-swing sorbent material. The capture structure is movable between collection and release configurations. The collection configuration includes the capture structure extending upward to expose the structure to an airflow and allow the sorbent to capture atmospheric carbon dioxide while a collection voltage is established across the sorbent material. The release configuration includes the disks enclosed inside the release chamber and conductively coupled to the power supply such that a release voltage is established across the electro-swing sorbent material, resulting in the release of captured carbon dioxide forming an enriched gas.

Abstract: In a circuit arrangement for a dropout detector for the detection of dropouts in signals which are reproduced from a record carrier, the signal path includes an amplitude discriminator before the threshold device which supplies a switching signal in the event of a dropout, the discriminator characteristic between two threshold levels of the output signals having a steep edge for amplitude discrimination in whose range the signal level which is decisive for the actuation of the threshold device is situated.

Abstract: The invention relates to a recording and/or playback apparatus for video signals, equipped with a rotary head system with at least one recording and/or playback head and at least one erase head for the trackwise erasing of a video signal recorded in the video tracks, which tracks cross a further track, specifically a synchronization track, the erase signal being applied to the rotating erase head via a time-controlled gate circuit, which interrupts the path of the erase signal to the erase head while said head scans the further track, thus preventing a signal recorded in the further track from being erased.