Circuits & Schematics: frequency meter - 2
Search for: "frequency meter"
- .. bridge is a cumbersome process. Figure 1. A simple VFC uses its internal reference to produce a serial pulse train whose frequency is inversely proportional to unknown capacitance CX. Options for measuring the VFC’s output ...09-11-2016
- .. 0.3%/ C. Meanwhile, optical sensor O 1 works with a free-spinning anemometer impeller to produce wind-speed-proportional frequency: F W = 10 Hz/m/sec. Conversion of V Q1 and F W into a 1-mV = 1 W/m 2 output signal is then the function ...
.. 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
- .. have to write the software from scratch. But I felt that the Atmega328 was just too much of an overkill just to measure a frequency and control an LCD. They are quite a bit more expensive than the PIC, CHF 3.70 compared to CHF 1.90 ...
.. 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 - .. root mean square (RMS) voltage of a sine-wave signal. There is a provision to insert external filters to provide special frequency responses. This feature also allows the meter to be used as two separate amplifiers with switched ...
.. V, while the ammeter has a selectable current sensitivity of 10 mA to 10 A. It may be surprising to offer a purely analog meter when digital meters are now so widely used. However, it isn’t well-known that digital meters have analog ...24-05-2023 - .. values of the prototype. Input resistance (all voltage ranges): 1 MΩ 1% Input capacitance: 20 pF (depends on layout) Frequency response: Flat from 20 Hz to 1 MHz: 1 dB at 10 Hz and 1.2 MHz. Voltage ranges: 1 10 100 mV 1 10 100 V; ...
.. convenient to use toggle switches in this network, but of course, slide or rotary switches could be used. Peak detector and meter The peak detector is shown in Figure 5. Figure 5. A diagram showing the peak detector. It has three features ...25-05-2023 - .. almost everywhere. However, convenient means of assessing the magnetic field strength over wide ranges of strength and frequency (20 Hz to 150 kHz) are not widely available. Despite the limitations, there are still many reasons why ...
.. without cutting or disturbing the cable. To begin, we will need two simple analog instruments: A hand-held magnetic field meter with a field sensor probe A calibration reference verifier source capable of producing a magnetic field ...08-08-2023 - .. from a 15 V supply. It is configured as a current-source output to produce a substantially constant current at any frequency from 20 Hz to 100 kHz, with a limited reduction up to 150 kHz. The verifier schematic is shown in ...
.. verifier input to main amplifier output when operated in broadband mode. Example use cases for the magnetic field strength meter With all that in mind, let's explore some example use cases for this magnetic field strength meter. ...09-08-2023 - .. by simply connecting a tuned circuit to its input. It turned out that it was possible to create a simple tuned radio frequency (TRF) receiver by implementing the two features of the LM386 mentioned earlier and using a tuned ...
.. When constructed with a LM386 manufactured by either National Semi or Samsung, this configuration can receive both the 80 meter and 40 meter amateur bands up to 8 MHz. Figure 5. The LM386 can be used to create a shortwave regenerative ...18-06-2020 - .. and should be readable and modifiable as desired in any case a few comments follow. #define F_CPU 2457600UL // crystal frequency #define PWM_TOP F_CPU/60 // == 40960 is TOP count for timer 0 (goes into OCR0A) These pre-compiler ...
.. software can be modified to display different things like a voltage at an analog input of the micro making a LASER analog meter. Or to make something like a LASER chronulator. More of these circuits can be superimposed to display different ...10-06-2009 - .. transistor to make a most unusual capacitance beeper probe. When a capacitor is touched to the probe, the probe beeps at a frequency that varies with capacitance. The frequency change is so steep with capacitance that tiny capacitors ...
.. C-Beeper will become indispensable in virtually no time! Quickly match capacitors and trimmers. Forget the capacitance meter when matching parts from the parts bin or selecting a fixed value to replace a trimmer - the fingers as ...12-11-2008
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