Questions tagged [test]
A definitive procedure that produces a test result.
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Efficient discharge of capacitor voltage to 2-10 ohm DUT
I need to apply the voltage in a capacitor to a load (between 2 and 10 Ω) and need to have the most efficient and simple method to do so.
The goal is to apply power to a DUT (device under test), ...
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Clock network remains at x when applying fast clock frequencies
I am required to test how a design behaves if it is run with extremely fast clock frequencies (higher than the maximum frequency allowed by timing constraints). The goal is to detect what kind of ...
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Why is insulation resistance is bad when absorption Ratio ≈ 1 and insulation resistance is good when absorption Ratio >1.25 or 1.3?
i will do absorption Ratio (AR) test for transformers in my job,and i know how to calculate the absorption Ratio
AR=\$ \frac{R_{60}}{R_{30}}\$
\$ R_{60}\$=Insulation Resistance after 60 second test
\$ ...
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What do you test when changing parts [closed]
Let's say some parts within one of your products are discontinued. You already have a replacement that seems to fit from specifications. What tests do you usually conduct to verify proper operation? ...
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How to select an appropriate tone spacing for intermodulation distortion testing?
Intermodulation distortion measurements require (at least) two closely spaced carriers combined before going into the DUT. I understand the basic theory but have not grasped the effect of the choice ...
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Measuring Li-ion battery manage to get a number in mAh
How can a circuit functioning to measure Li-ion or else type battery manage to get its mAh capacity, how is this circuit's method ?
EDIT
Known it from a reviewer fed into an e-commerce site I forget (...
user285744
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2
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LED check circuit on startup
I wanted to use a sensor which should indicate low fluid level with a LED.
I don’t want to have a non working LED in that circuit and want it to be automatically checked everytime the circuit powers ...
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Soldered test point on production board?
I understand having test points on a production board, but what would be the point of selectively soldering some of them? It doesn't modify any resistance, right?
I assume that the large numbers of ...
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Building custom hardware for programming boards with microcontrollers
I have a PCBA that includes a MSP430 microcontroller and another module. The connection is shown in the photo below where the former (MSP430) is at the bottom and the top is for the other module.
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How to program MCUs and test PCBs in mass production?
I am working on a PCB which includes an microcontroller (STM32), some sensors and a BLE module. Right now it is still a prototype, only 3 units have been produced.
To program the microcontroller, I ...
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Identify live or neutral in 2-way switch
I have a 2-way switch connecting to a light and it works properly. When opening it up, it has 3 inputs with the same wire color. I don't know the setup and I wish to know if there is a neutral in one ...
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How to go about debugging PCB Power Supply Circuits to ensure correct output voltage?
I'm currently soldering, testing and validating the components on this PCB that I designed a few months back.
As it is right now I have soldered the 1.2V, 2.5V, 3.3V and 5V buck converter power ...
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How can we test the lifespan of electrical components?
We work with some electronic devices in our projects. We are at the stage where we need to create some test strategy to validate the lifespan (e.g. 1 to 5 years) of our devices for which we provide ...
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How can I test whether my 3 wire electric motor is broken? [duplicate]
I have a motor that I'm trying to work out if it's faulty or not. The motor make and model is EMC RB2C-190-060 K010 (photos below) -
230V
~ 50/60 Hz
2μF-450V
65/90W
0.3/0.4A
The motor has four wires ...
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1
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Vdd rise test in real life
I want to simulate VDD rise. For example I want to raise 1.2V VDD to 4-5 Volts for tens of microseconds and lower back to 1.2V. Suppose I have a high rise and fall time pulse generator (200-500 ...
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