From luminance data detected by the low-energy detector (32), the low-energy transmittance calculating unit (72) calculates the transmittance, in a low-energy range, of X-rays that have passed through an object to be inspected (S).

An output of the addition is converted by the low-pass filter (23) and the low-frequency detector (24) into 100kHz, resulting in detection.

It is proposed to construct a fire detector (14) from a gas sensor (6) on a micromechanically produced low-power substrate (1).

A novel low-power and compact laser spectroscopic sensor is described herein.

The present invention relates to a low-voltage self-calibrated peak detector (100).

Included in the system is an evaporative light scattering detection device, a low temperature adaptor and a connection tube (260) for providing a fluid connection between the evaporative light scattering detection device and the low temperature adaptor.

The low frequency response of the sensor is therefor extended to lower frequencies.

12SQ7 : as Detector and first Audio Frequncy (AF) Amplifier

A rising edge detector also uses the inherent capacitance of the low voltage to high voltage interface.

Since the lithium ion-conductive glass of this sensor is formed to a film structure, the internal resistance of the sensor is low, and the sensor is operated at a low operating temperature, and has a high response speed.

A low frequency detector (70) selectively applies a high pass filter (41) to an output of the impedance generator for filtering the low frequency transients.

Variable-temperature operation results in a very low average power consumption of the gas sensor.

The best choice of metal detector for the beach is either a waterproof pulse induction or a very low frequency (VLF) detector.

A low impedance touch sensor detects manual contact of a dielectric substrate (10) by a human user.

An acceleration sensor having uniform characteristics of detection and improved low-frequency characteristics of detection.