Ink level sensor and related methods

N Ge, T Benjamin, TK Neo, JM Torgerson… - US Patent …, 2017 - Google Patents
In an embodiment, a method of sensing an ink level includes applying a pre-charge Voltage
Vp to a sense capacitor to charge the sense capacitor with a charge Q1, sharing Q1 …

Readout system for MEMS-based capacitive accelerometers and strain sensors, and method for reading

J Santana, CAP Van Liempd… - US Patent …, 2014 - Google Patents
(51) Int. Cl. to actuation Voltages applied to the sensor for generating the GOIR
27/26(2006.01) first signal. The readout circuit may further includes a first GOIP …

Capacitive sensor estimation based on self-configurable reference capacitance

N Petrellis, C Spathis… - Recent Patents on …, 2013 - ingentaconnect.com
A number of capacitance readout systems presented in the literature and covered by recent
patents are briefly described while a biosensor array readout system developed by the …

Capacitive pressure sensor and method for its production

R Teipen, B Lemke, T Kober, L Karweck… - US Patent …, 2019 - Google Patents
(57) ABSTRACT A high-precision pressure sensor, having a first base body that has two
electrically conductive layers and an insulation layer arranged between the two layers and …

Ink level sensing

N Ge, T Benjamin, TK Neo, JM Torgerson… - US Patent …, 2018 - Google Patents
In some examples, an ink level sensor includes a sense capacitor between a first node and
ground, a first switch to couple a first voltage to the first node and charge the sense …

Ink level sensing

N Ge, T Benjamin, TK Neo, JM Torgerson… - US Patent …, 2019 - Google Patents
In some examples, a method of sensing an ink level includes applying a pre-charge voltage
to a sense capacitor to charge the sense capacitor with a charge, sharing the charge …

Bias arrangement and apparatus

K Ullen, P Korner, M Birch - US Patent App. 12/267,115, 2010 - Google Patents
BACKGROUND 0002 Input devices, such as microphones or other devices providing an
analog signal sensitive to introduced noise, being connected by wire and relying on an …

MEMS capacitive sensor

G Rocca, T Hanzlik - US Patent 10,547,277, 2020 - Google Patents
(57) ABSTRACT A MEMS capacitive sensor is disclosed. In an embodiment a MEMS
capacitive sensor includes a capacitor having a variable capacitance, wherein the capacitor …

Applying a positive feedback voltage to an electromechanical sensor utilizing a voltage-to-voltage converter to facilitate a reduction of charge flow in such sensor …

J Seeger, P Shettigar - US Patent 11,835,538, 2023 - Google Patents
Reducing a sensitivity of an electromechanical sensor is presented herein. The
electromechanical sensor comprises a sensitivity with respect to a variation of a mechanical …

Capacitive MEMS microphone with active compression

H Ihs - US Patent 10,840,869, 2020 - Google Patents
A digital microphone compresses a large voltage swing signal from a MEMS capacitor to a
signal suitable for processing by integrated circuitry. The compression may be performed in …