Power test
In the development of electronic devices, the task of functional testing of the device at different supply voltage values often arises. Fork will help you automate testing process.
If the energy usage of your device is very low, it is easiest to assemble a linear voltage stabilizer from literally two parts: the OA and the transistor. And use analog Fork output as a reference voltage.
This solution will allow the voltage to be adjusted between 0 and 10V. Maximum power is limited by the capabilities of the VT1 transistor and its cooling.
In our case, the debugging board STM32F0 is the test device. Its consumption/energy use is no more than 70 mA. Thus, the transistor will generate about 0.7 watts of heat, when it's powered by the 12V.
To control the serviceability of the device and possible short circuits - we will add a current-measuring shunt to the "ground." This, of course, reduces the actual supply voltage of the device. But with quite little resistance of the shunt, this influence is slight. In our case, the drop on the shunt will not exceed 70 mV.
This solution will allow the voltage to be adjusted between 0 and 10V. Maximum power is limited by the capabilities of the VT1 transistor and its cooling.
In our case, the debugging board STM32F0 is the test device. Its consumption/energy use is no more than 70 mA. Thus, the transistor will generate about 0.7 watts of heat, when it's powered by the 12V.
To control the serviceability of the device and possible short circuits - we will add a current-measuring shunt to the "ground." This, of course, reduces the actual supply voltage of the device. But with quite little resistance of the shunt, this influence is slight. In our case, the drop on the shunt will not exceed 70 mV.
For illustrative purposes, we have assembled a layout with UTC324D (LM324D analog) and 2SD882P.
The testing program gradually increases the supply voltage in 0.1V increments/pace. The R1 shunt voltage is then measured and if the threshold is exceeded, the power is cut out and the testing is over.
In order to reduce the impact of noise and random spikes of consumption, the RMS is measured over 16 dimensions rather than instantaneous current values.
As a result, the oscillograms obtained during debugging show how the voltage increases. In the range of about 2V, the tested device tries to start up, but there isn't enough power for that.
In order to reduce the impact of noise and random spikes of consumption, the RMS is measured over 16 dimensions rather than instantaneous current values.
As a result, the oscillograms obtained during debugging show how the voltage increases. In the range of about 2V, the tested device tries to start up, but there isn't enough power for that.
If the voltage is further increased, the debugging board goes into operation mode. Increases in consumption are visible when the LED is turned on.
And in case of short circuit (laboratory PU there is limited of maximum current: 150mA) the power supply is cut out.
The source code of the test program is available at this link.
Thus, using Fork and 3 additional parts, we have assembled a simple, and at the same time convenient stand for automated testing of the device power supply system with failure monitoring. In case if you have bunch of devices, this will save your time.
Thus, using Fork and 3 additional parts, we have assembled a simple, and at the same time convenient stand for automated testing of the device power supply system with failure monitoring. In case if you have bunch of devices, this will save your time.
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This privacy policy does not apply to the actions of third parties that we do not own or control. You can refer to Artes Electronics privacy policy to learn more about its privacy practices.
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Information we collect
In order to complete your order or contact you to discuss a partnership, you must provide us with certain information, such as your name, email address, phone number(in some cases, postal address, payment information, and details of the product you are ordering). You can also provide us with additional personal information (for example, for an individual order) if you contact us directly.
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Why we need your information and how we use it
We rely on a number of legal grounds to collect, use, and share your information, including:
as necessary to provide our services, such as when we use your information to fulfill your order, resolve disputes, or provide customer support;
when you have given your affirmative consent, which you can revoke at any time, for example by subscribing to our mailing list.
__________
Information sharing and disclosure
Information about our customers is important to our business, so we do not share this information with third parties. Otherwise, it is possible only after receiving your personal consent.
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Data storage
We only store your personal information for as long as it is necessary to provide our services and as described in this privacy policy. However, we may also be required to store this information in accordance with our legal and regulatory obligations, resolve disputes, and enforce our agreements. Maximum period of storage of your data: 5 years.
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Transfer of personal information outside the EU
We may store and process your information through third-party hosting services in the United States and other jurisdictions. As a result, we may transfer your personal information to a jurisdiction with different data protection and government oversight laws than your jurisdiction. If we are deemed to be transferring information about you outside the EU, we rely on Privacy Shield as the legal basis for the transfer.
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Your right
If you live in certain territories, including the EU, you have a number of rights with respect to your personal information. While some of these rights apply in General, some rights only apply in certain limited cases. We describe these rights below:
Access. You may have the right to access and obtain a copy of the personal information we hold about you by contacting us using the contact information below.
Edit, restrict, delete. You also have the right to change, restrict or delete your personal information. No exceptional circumstances (for example, when we are required to store data for legal reasons) We will generally delete your personal information upon request.
An object. You may object to the processing of some of your data based on our legitimate interests and the receipt of marketing messages from us after you have provided your explicit consent to receive them(providing mail is such consent). In such cases, we will delete your personal information if we do not have a valid and legitimate reason to continue using this information or if it is necessary for legal reasons.
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How to contact us
For the purposes of EU data protection law, we, Artes Electronics, are the data controller of your personal information. If you have any questions or concerns, you can contact us at info@arteselectronics.com. In addition, you can send us an mail at: office 17, 50A Tambovskaya str., Saint Petersburg, 192007, Russia