Circuits & Schematics: meter - 9

81. DC-DC converter starts up and operates from a single photocell
    Marián Štofka
    Circuits Supply Power Solar Texas Instruments bq25504
    .. Experiments were performed with a single solar cell of diameter D=7.5 cm positioned horizontally on a desk located 1 meter from a window. Although it was sunny outside, practically no direct sunlight passed through the window. Under ...
    Dec 3, 2013

82. Circuit discriminates & recovers noisy pulses
    Circuits Analogue Design
    .. and output was also required, so I could not use an integrator or other simple design. The circuit is used in a distance meter, which is why little and constant delay between input and output pulses is so important. Testing has ...
    Aug 11, 2015

83. Distribution Automation and the Smart Grid: Coming of Age with a New Set of Challenges
    Circuits Automation Application Notes Maxim MAX11040K MAXQ1050
    .. most realize. Take, for example, the smart grid with smart meters. Every day utilities are installing a shiny new smart meter on our house and encouraging us to take control of our energy future. We are to monitor and report consumption ...
    Dec 13, 2013
84. Forced Quenching Improves Three-Transistor FM Tuner
    Lyle Williams
    Circuits Radio NXP BF245
    .. from the form. The coil is tapped one half turn from the 9 volt supply side to make a connection for the antenna. A one meter long wire antenna is sufficient. The 0.04 to 6 pF capacitor is used to tune in stations. The tuner needs an ...
    Oct 18, 2016
85. Current sensor measures 0 to 500A
    Circuits Analogue Design Measurement Microsemi 2N2060 2N3810
    .. passive components except for the 5-mW resistor R S , which is manufactured with calibrated wire of well-known ohms/meter characteristics. Materials on the topic Datasheet Microsemi 2N2060 Datasheet Microsemi 2N3810
    Oct 24, 2016
86. Computer Sound Card Provides Simple Internet-Based Appliance Remote Control
    Circuits Wireless Computers and Peripherals Texas Instruments LM358
    .. available; one good choice is Audio Test set [ 2 ] from Darkwood Designs. This free software also incorporates a level meter which measures the input-voltage level applied to the mic/line input of the computer’s sound card (Fig. ...
    Nov 25, 2016
87. Inverted bipolar transistor doubles as a signal clamp
    Circuits Analogue Design Radio Fairchild 2N3904
    .. levels and that the 2N3904 has a bit less offset, as you would expect from Figure 2. The output can drive a signal level meter or following electronics as part of an automatic-level-control or automatic-gain-control loop. Figure 4. Using ...
    Dec 14, 2016
88. Multi-decade current monitor the epitome of simplicity
    Nick Cornford
    Circuits Measurement
    .. 1 .) For our purposes, we can extract from it: V F ∝ logI F at a given temperature. Now, shunt a diode with a meter movement. At very low currents, it will indicate microamps as the current flows through it rather than the ...
    Jul 5, 2017
89. Single switch serves dual duty in small, microprocessor-based system
    Steve Hageman
    Circuits Microcontrollers Usage Vishay TP0610
    .. In turn, Q 2 switches off Q 1 to remove power from the system. Reference Hageman, Steve, Relative humidity/temperature meter Materials on the topic Datasheet Vishay TP0610
    Oct 11, 2017
90. Low EMI, Silent Switcher, 1.2A μModule Regulator in 4mm × 4mm × 1.92mm BGA Package
    Circuits Supply Analog Devices LTM8074
    .. Ultralow Noise: CISPR 22 Class B Figure 6. EMI Performance vs CISPR 22 Class B for 12 V IN to 3.3 V OUT at 1.2 A (3 meter, Peak, Vertical Antenna, No EMI Filter). Switching regulators naturally produce radiated EMI, as their ...
    Jan 30, 2019

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