Circuits & Schematics: detector - 10

91. Reset supervisor waits for stable supply
    Circuits Analogue Design Microcontrollers Usage Texas Instruments TLV3491
    Mike Mitchell EDN The power-up cycle of the supply voltage in embedded-system applications is sometimes not a clean event. This fact holds especially true in battery-operated systems, because the insertion of a battery often causes significant ...
    29-03-2017

92. Interfacing Linear Sensors To An ADC Requires Only Basic Math
    Circuits Analogue Design Measurement Analog Devices OP177
    .. its linear performance with a sensor equation that’s typical of this type of semiconductor-based temperature detector: (2) where V T is the diode’s temperature-derived signal. By solving Equation 2 for the ...
    16-05-2017

93. Color sensor achieves high dynamic range with auto exposure
    Circuits Measurement MCU Open-Source Platforms Light Arduino Hamamatsu S9032
    .. Gottardi EDN The Design Idea in Figure 1 is a color detector capable of generating an RGB triplet over a high dynamic range, a useful attribute for machine vision ...
    09-06-2017
94. Low-cost RF sniffer finds 2.4-GHz sources
    Circuits Wireless Measurement Linear Technology LT5534
    .. in the 2.4- to 2.5-GHz frequency band. At the circuit's heart, a Linear Technology general-purpose LT5534 RF-power detector, IC 1 , measures RF-signal strengths from 55 to 5 dBm and provides an RSSI ...
    15-11-2017
95. Energy Harvester Produces Power from Local Environment, Eliminating Batteries in Wireless Sensors
    Circuits Supply Linear Technology LTC3588-1
    .. all the critical power management functions: a low loss bridge rectifier, a high efficiency buck regulator, a low bias UVLO detector that turns the buck converter on and off, and a PGOOD status signal to wake up the microcontroller when ...
    29-11-2017
96. Add Simple Temperature Monitoring To Battery-Management Systems
    Circuits Automotive Analogue Design Measurement Power Linear Technology LT6001 LTC6802
    .. with the LTC6802 include an accurate thermistor-based sensor for SOC calculations (Fig. 1) and a simple diode-based hotspot detector (Fig. 2). а) b) Figure 2. A simple diode array hotspot temperature sensor is formed using the LTC6802 ...
    23-01-2018
97. Two wires control SPI high-speed ADC
    Circuits Interfaces Microcontrollers Usage Texas Instruments ADS7816
    .. the process. When the clock line initially goes low, it also asserts /CS to a low state. The time constant of the peak detector comprising D 1 , R 1 , and C 1 ensures that /CS does not go high until the clock line remains high for ...
    22-02-2018
98. Use Inexpensive Components To Create An Infrared Close-Object Alert Circuit
    Circuits Automation Measurement Robots Texas Instruments LM555 CD4060B
    .. through resistor R1, and the LED inside the opto sensor is illuminated continuously. The LM555 (IC1) is wired as a light detector plus medium-current inverting line driver. Usually, its output (pin 3) is low. The value of sensitivity ...
    10-12-2018
99. Add a signal-strength display to an FM-receiver IC
    Circuits Wireless Measurement NXP TDA7000
    .. because the IF signal is centered on 70 kHz. The voltage at Pin 12 is dc-coupled to an amplifier, IC 2 . Next, an envelope detector, IC 3 , yields a dc voltage proportional to the received-signal strength. The TCA965 window ...
    13-12-2018
100. Photodetector sorts objects
     Circuits Measurement NXP ICM7555
     .. wave; thus, a filter can remove optical noise. You normally need filtering when light shines through fans onto the optical detector. When required, you can place a bandpass filter in series with Q 3 's output. Figure 1. An oscillator ...
     08-11-2019

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