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Author Topic: Riden RD6024W terrible high noise  (Read 11495 times)

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Offline SoundSpongeTopic starter

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Riden RD6024W terrible high noise
« on: January 11, 2024, 02:39:13 pm »
Hi to all..I need help :phew:
Every customer is happy for their unit so I buy one..

I buy this unit from Ali but when I purchased I don’t read advertising about high noise without load.. they say it’s normal.. :palm:
Now I want solve the problem in every way is possible.. the noise is unacceptable for me..
Hope you can help me!
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Offline Vovk_Z

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Re: Riden RD6024W terrible high noise
« Reply #1 on: January 11, 2024, 05:35:58 pm »
I would recommend a great book:
Noise Reduction Techniques in Electronic Systems. Book by Henry W. Ott
« Last Edit: January 12, 2024, 08:08:53 pm by Vovk_Z »
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Offline MathWizard

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Re: Riden RD6024W terrible high noise
« Reply #2 on: January 11, 2024, 11:34:40 pm »
So did you look at the output on an oscilloscope ? What sort of noise are you talking about ?
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Offline SoundSpongeTopic starter

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Re: Riden RD6024W terrible high noise
« Reply #3 on: January 12, 2024, 05:46:05 am »
I don’t have oscilloscope but I link you a video
https://youtu.be/thYjZ1BGJv4?feature=shared
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Offline SoundSpongeTopic starter

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Re: Riden RD6024W terrible high noise
« Reply #4 on: January 14, 2024, 01:29:55 pm »
AliExpress suggest to put 5.1 kohm resistor (higher than 3W) at output.
What do you think about this solution?
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Offline unseenninja

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Re: Riden RD6024W terrible high noise
« Reply #5 on: January 14, 2024, 06:05:55 pm »
It seems you don't mean electrical noise, but fan noise.

The resistor you are talking about goes in the power lead to the fan to slow it down. Do that, or fit a Noctua fan instead.
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Offline SoundSpongeTopic starter

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Re: Riden RD6024W terrible high noise
« Reply #6 on: January 15, 2024, 08:48:43 am »
It's not a fan problem, its high frequency noise probably from power supply. Yes it's electrical noise. See my video  2 message upper In this chat
« Last Edit: January 15, 2024, 10:15:51 am by SoundSponge »
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Offline SoundSpongeTopic starter

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Re: Riden RD6024W terrible high noise
« Reply #7 on: January 16, 2024, 08:06:36 am »
From RIDEN

Due to the large output power range of the product, in order to reduce the power consumption of the switching power supply when no-load, the PWM control chip will jump some control cycles. Assume that the original working frequency is 60KHZ. If there are more skipping cycles, the working frequency will be reduced to less than 20KHZ. This Sometimes a noise audible to human ears is produced. The size of this noise is also related to the production process of the transformer. Since the winding and paint impregnation of each transformer’s coil are slightly different, the noise of each product’s operation is slightly different.





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Offline SoundSpongeTopic starter

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Re: Riden RD6024W terrible high noise
« Reply #8 on: January 18, 2024, 05:58:06 pm »
Any help for me?
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