Circuits & Schematics: meter - 4

31. Four-quadrant power supply provides any-polarity voltage and current
    Circuits Supply Analog Devices LT1970 LT1882
    .. which may complicate their powering.) Note that the selected current-sense resistance optimizes a digital-panel-meter display with the usual 200-mV full-scale sensitivity to present as much as 1.999 A, for example. One word of ...
    20-03-2019

32. 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 ...
    30-01-2019

33. Stand-alone Inductance Meter on PIC16F1936
    Circuits Measurement Microchip PIC16F1936 Atmega328
    .. Fässler soldernerd.com Some of you may have seen my arduino-based inductance meter in the article [1]. The arduino-based meter works well and made a great proof-of-concept. But for everyday use ...
    21-08-2018
34. Linear wind-power meter compensates for temperature
    Circuits Analogue Design Wind Energy Measurement Texas Instruments CD74HC4053 LM4040 LMC6484
    .. In combination, they provide a real-time, linear, temperature-compensated readout of wind-power density. Figure 1. This meter circuit uses a free-spinning anemometer and a diode-connected transistor temperature sensor to measure the ...
    29-01-2018
35. Single switch serves dual duty in small, microprocessor-based system
    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
    11-10-2017
36. Multi-decade current monitor the epitome of simplicity
    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 ...
    05-07-2017
37. Power Meter is ±1% Accurate
    Circuits Measurement Maxim MAX427 MAX4372
    .. industrial heating systems, and other systems in which the load voltage and current are both variable. The power meter/controller in Figure 1 uses the principle that power is the product of voltage and current. The typical ...
    31-05-2017
38. 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 ...
    14-12-2016
39. 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. ...
    25-11-2016
40. VFC makes simple capacitance meter
    Circuits Analogue Design Measurement Analog Devices AD537
    K Suresh EDN When you develop the prototype of a circuit using capacitors or when you replace an old, defective capacitor with a new one, you often need to know the value of the capacitor you use or replace. At times, the values printed on the ...
    09-11-2016

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