Charge or particle sensing

H - Electricity – 03 – F

Patent

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Details

H03F 3/08 (2006.01) G11B 7/13 (2006.01) H04N 3/15 (2006.01)

Patent

CA 2473619

A sensing arrangement for sensing charged particles and/or quanta of elektromagnetic radiation has a sensor device (12) and amplifier circuitry (14). The sensor device (12) provides a sensor signal to an imput mode (vin) of the amplifier (14) to cause the level at the amplifier output mode (vout) to change. A negative feetback device (T1) responds to the change in level of the output node (Vour) to vary the feedback effect to increase the loop again of said amplifier circuitry (14). A current mirror (T2,T3) resets the input node (vin) to its initil level. Single particle and integrating sensor arrangements are disclosed.

L'invention porte sur un dispositif de détection permettant de détecter des particules chargées et/ou des quanta de rayonnement électromagnétique. Ce dispositif est doté d'un dispositif de détection (12) et de circuits amplificateurs (14, M1, M4). Le dispositif de détection envoie un signal de détection à un noeud d'entrée Ventrée de l'amplificateur (14, M1, M4) afin que le niveau du noeud de sortie Vsortie de l'amplificateur change. Un dispositif de rétroaction négative (T1, T2) réagit au changement de niveau du noeud de sortie afin de modifier l'effet de rétroaction dans le but d'augmenter le gain de la boucle desdits circuits amplificateurs. Un miroir de courant (T2, T3, M3, M6) remet le noeud d'entrée à son niveau initial. L'invention concerne aussi des particules uniques et des dispositifs de détection intégrés.

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