Charge or particle sensing
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United States of America Patent
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Feb 27, 2007
Grant Date -
May 19, 2005
app pub date -
Jan 20, 2003
filing date -
Jan 21, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A sensing arrangement for sensing charged particles and/or quanta of electromagnetic 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 initial level. Single particle and integrating sensor arrangements are disclosed.
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