Questions tagged [precision]
Use this tag to indicate that the topic is related to achieving the highest precision for a circuit. Examples include using 1% resistors instead of 5% or 10%. This tag also can be used in relation to measuring precision in a finished circuit.
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How to make an ideal rectifier which can efficiently rectify 3 phase AC for power applications? [closed]
I'm working on a wind turbine project which needs to be able to rectify 3 phase AC with varying voltages. The lowest the input voltage will likely be is 2V, while the higher end will be 27V.
I've been ...
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External DAC (DAC8568) software calibration
I'm using a 16-bit 8-channel DAC (DAC8568), driven by STM32 MCU.
I need to obtain the 0-5V and 0-10V switchable output range, so to achieve that the voltage must be amplified with op-amp.
This raises ...
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Load regulation of constant current source
LM317HV data sheet provides following reference circuit for use as a "simple, fixed-current regulator" in section 9.2.9.
It also specifies typical load regulation of 0.1%. I don't think the ...
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Right transimpedence amplifier choice for input range
I have a device that produces a ±30 nA signal and I'd like to measure this to a 0.1 nA precision.
Since the currents are so low and I don't have much time to make mistakes, I am planning to use a TIA ...
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What is more precise: using an op-amp or internal PGA of an ADC to amplify a low-voltage signal?
I'm wanting to current sense a 10A load with high precision. I'm planning to use a current shunt resistor and then amplify/filter this signal before sending it to an ADC. Which design flow is ...
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Voltage-controlled pulse width modulator (PWM) LTC6992 accuracy [closed]
I have to design a voltage sensor for sensing 4000 V highly precisely and for making the PWM. I was surveying the LTC6992. It is simple and quiet, easy to implement, but there is a problem with its ...
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Is there a specific definition for the tolerance value of a resistor?
Is there any authoritative definition for what the tolerance value of a resistor actually specifies, or is it just a de-facto common understanding, or are the details left up to individual ...
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Transimpedance amplifier maximum current resolution
Maybe this question is a bit too general but I don't seem to find any solution.
I want to build a current sensor for a current that ranges from 1uA to 1mA and needs resolutions of nearly 1pA.
I know ...
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Low noise virtual ground, voltage reference or LDO + op amp?
I'm doing some sensitive signal measurements in 1~10kHz range where I amplify and filter (multiple active stages) a small voltage signal by hundreds ~ thousands of times and then sample it. A negative,...
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I'd like to request a review/bashing of this circuit for a high precision soil moisture sensing and analysis device. Where did I go wrong?
Below you will find a buffet of questions and the schematic for my device. (Click on it and you will get the full-size image.) Please tear this up. I'm a self-taught novice putting together a high-...
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The most precise resistor with respect to temperature ppm
What is the most precise resistor available (measured in terms of ppm drift if
measurements are repeated over time)?
I just want a passive box with two terminals. The temperature will be kept between ...
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3 wire RTD configuration Wheatstone bridge Vs. Constant Current Source
I am trying to design a 3 wire RTD circuit. I've been looking into either a Wheatstone bridge or a constant current source with ratiometric measurements. I would like to know which is the better ...
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Negative pulse at NPN collector when base switches off and reverse-active mode behaves better at HF
I have a system that detects pulses amplitudes with a peak detector, the signal from which is then digitized with an ADC. Pulses can sometimes overlap, so I've decided to "zero" the peak ...
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Verifying the Measurement Precision of a Circuit
My aim is to build an electronic circuit that allows me to measure the relative precision of the energy of optical pulses in the order of 10^-6. The optical power of the laser pulses is measured with ...
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Ideas for measuring the position of a card in a bus (through hardware)
I am looking for ideas on how to detect the bus position of a module (PCB card) when they stack up.
I am designing a PCB module that is going to be controlled and connected to a carrier board. This ...
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