Circuits & Schematics: metal - 9

81. Eliminate thermoelectric EMF in low-ohm measurements
    Circuits Analogue Design Measurement Analog Devices AD7719 ADR420
    .. Wynne EDN When two different-metal conductors connect together in a loop and one of the junctions is at a higher temperature than the other, an ...
    Nov 29, 2017

82. Circuit yields accurate absolute values
    Circuits Analogue Design Measurement Central Semiconductor MPQ6700
    .. base-collector junctions of a monolithic transistor array, such as an MPQ6700 . The resistors are 10- and 20-kΩ, 1% metal-film units. You can use optional 100 Ω trimmers in series with the resistors in the circuit to trim for ...
    Dec 26, 2017

83. Ultra Low Power Reset Generator
    Circuits Oscillators Maxim MAX917 MAX920
    .. this circuit is able to generate periods from mS to minutes. To ensure good temperature stability R1 and RP should be metal film and C1 and C P should be NP0 type capacitors. Assuming a CMOS type input, high impedance and with a logic ...
    Sep 19, 2018
84. Precision Ultralow Power High Side Current Sense
    Catherine Chang
    Circuits Analogue Design Measurement Linear Technology LTC2063 LT1389
    .. gain-set path of R IN and R LOAD . To cancel out the parasitic thermocouples at the op amp inputs, R 1 should have the same metal terminals as R IN . Asymmetric thermal gradients should also be avoided as much as possible at the inputs. ...
    Sep 19, 2018
85. Build a UPS for USB devices
    Circuits Supply Maxim MAX1703
    .. the current source to charge the battery. Adjusting R 1 allows you to set the current-source output to charge the nickel-metal-hydride cells at a level one-tenth the battery's capacity. Disconnecting the circuit from the USB supply ...
    Oct 18, 2018
86. High-efficiency 20A monolithic silent switcher 2 regulator for SoC and μP applications
    Zhongming Ye
    Circuits Supply Analog Devices LTC7150S
    .. on- and off-times and larger solution size. Alternative mitigation techniques, such as a complicated bulky EMI filter or metal shielding, add significant costs in board space, components and assembly, while complicating thermal management ...
    Jan 14, 2019
87. Multilayer Capacitor Doubles as Varactor
    Susanne Nell
    Circuits Oscillators Diodes CD74HC14
    .. results. If necessary, you can compensate the temperature coefficient of the capacitor with a combination of NTC, PTC, and metal-film resistors for R 1 . For measurements, this design uses a simple metal-film resistor. The capacitance ...
    Jan 29, 2019
88. 40V Input, 3.5A Silent Switcher µModule Regulator for Automotive and Industrial Applications
    Zhongming Ye
    Circuits Supply Analog Devices LTM8003
    .. increasing minimum on- and off-times, and requiring a large solution. Alternative solutions such as an EMI filter or metal shielding add significant costs in required board space, components, and assembly, while complicating thermal ...
    Apr 18, 2019
89. How to Read Measurement Data of a Dial Indicator and Send This Data to a Personal Computer (PC)
    Circuits Arduino Analogue Design Measurement Texas Instruments LM339-N
    .. is to automate the process of measuring the amplitude of vibrations of the working end of the sonotrode in an ultrasonic metal welding system. During ultrasonic welding, the sonotrode oscillates at a frequency of about 20 kHz and with ...
    Jul 25, 2019
90. DIY Ultra Sensitive EMF Detector
    Circuits Arduino Measurement Beginners Microcontrollers Usage
    .. signalization. In this case the sensor is a plain copper wire, with a 1.5 mm diameter, but you can use any piece of wire or metal tile. Figure 1. A simple to build, but very sensitive electromagnetic field detector. Sensitivity can be ...
    Apr 18, 2020

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