EEVblog Electronics Community Forum
Products => Test Equipment => Topic started by: Hugoneus on January 20, 2016, 02:49:37 pm
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You can watch the video here: [46 Minutes]
youtu.be/JiO3OoMfwXQ (http://youtu.be/JiO3OoMfwXQ)
More videos at The Signal Path:
http://www.TheSignalPath.com (http://www.TheSignalPath.com)
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Great video as always.
The 431 voltage reference would have been the last part I would habe checked. Quite unusual to see one fail.
If you still have the part, could you compare its behaviour to a new part? It could be interesting to see how it is different. Since the power supply was still in regulation, the 431 was not complete dead.
At the end of the video you made a mistake: You can not calculate the power consumption by only measuring the current, because all the filter caps in the power supply create a large reactive power.
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Great video as always.
The 431 voltage reference would have been the last part I would habe checked. Quite unusual to see one fail.
If you still have the part, could you compare its behaviour to a new part? It could be interesting to see how it is different. Since the power supply was still in regulation, the 431 was not complete dead.
At the end of the video you made a mistake: You can not calculate the power consumption by only measuring the current, because all the filter caps in the power supply create a large reactive power.
Thanks, I recognize that the current consumption is not all due to the resistive element. However, I did measure the 5V DC supply, and it is about 3.5W and some more from the other two supplies.
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By the way, if anyone is interested to buy this unit, let me know.