Circuits & Schematics: detector - 10

91. Doorbell transformer acts as simple water-leak detector
    Circuits Automation Security
    .. Tregre EDN Shortly after installation, the simple water-leak-detector circuit in this Design Idea saved the day and hundreds of dollars. The average life expectancy of a ...
    Jun 23, 2016

92. Discrete Devices, ICs Improve Inverting Charge-Pump Design
    Tim Davis
    Circuits Supply Power Microchip TС1044S MCP1401T TLE2426
    .. step toward that goal. Figure 1. The inverting charge pump combines a pair of charge-pump ICs with a separate MOSFET-based detector/clock-doubler subcircuit, which in turn enables synchronization and enhances performance. The ...
    Apr 13, 2016

93. Low-cost isolation amplifier suits industrial applications
    Circuits Analogue Design Measurement NXP LM385 BAV99
    .. tracking of the diodes within the dual-diode package. Average current consumption of the circuit, excluding the peak-detector op amp, is approximately 150 µA. The noise and stability of the 2.5 V supply that drives the ...
    Jan 31, 2016
94. Schmitt trigger adapts its own thresholds
    Anthony Smith
    Circuits Analogue Design Texas Instruments TLC3702
    .. amplitude of the input signal. Comparator IC 1A together with analog switch IC 2B and capacitor C 1 form a positive peak detector. When the input signal rises above the voltage stored on C 1 at the comparator's inverting input, the ...
    Dec 3, 2015
95. Circuit detects rapidly falling signals and rejects noise
    Circuits Analogue Design Measurement
    .. the output to change state. You set the threshold level with voltage divider R 6 and R 7 . D 1 , R 5 , and C 2 form a peak detector. R 5 establishes a time constant of the discharge of C 2 and provides sensitivity to a falling ...
    Sep 30, 2015
96. Antilog converter linearizes carbon dioxide sensor
    Jordan Dimitrov
    Circuits Security Measurement Hanwei Electronics MG-811
    .. of sensor. References: MG-811 CO 2 Sensor Module AN-30 Log Converters, National Semiconductor (TI) TGS4161 Carbon Dioxide detector
    Aug 19, 2015
97. Simple pulse oximetry for wearable monitor
    Circuits Analogue Design Medicine Linear Technology LT6003
    .. amplifier with a gain of 30. The negative input of comparator IC4 is connected to the modified signal using the peak detector circuit. Components IC3, D1, and C6 are used to detect and hold the maximum voltage of the input signal. ...
    Jul 3, 2015
98. Novel Q-meter
    Louis Vlemincq
    Circuits Measurement
    .. oscillate. The current in the other arm of the quad is intercepted by R1, and results in a voltage appearing on the diode detector D6/D7, and the output J1. D7 is a peak detector compensated by D6. When a signal is detected, it ...
    Jan 26, 2015
99. Soldering iron driver bridge controls temperature
    Kiril Karagiozov
    Circuits Automation Tools and Technologies Power
    .. iron's temperature to the selected value. Most parts are not critical. A BC547 was used for Q1. U3 is an active peak-detector ( Reference 4 ), and U4 is connected as an inverting Schmitt trigger (ST) with trip thresholds at about ...
    Jan 2, 2015
100. Adaptive rotary encoder distinguishes fine from coarse
     Anthony Smith
     Circuits
     .. is shown outside the shaded area and works as follows. Monostable multivibrator IC3a and flip-flop IC2b form a simple rate detector which monitors the frequency of the signal at B. Faster rotation of the encoder increases the ...
     Apr 14, 2014

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