I just connected my SMPS300RE and it makes a high pitched sound. Is that normal? I can hear it from a couple feet away. Attached sample
You may try to paint the transformer with some glue, but i am
Not sure if that is going to work.
Cheap products like this usually suffer such issues
Not sure if that is going to work.
Cheap products like this usually suffer such issues
I waited a long time to try it but not too long so fortunately, I'm still within the year warranty on it. I sent the hifimediy an email with a link to the video.
I was just curious if this was one of those things where "that is just how they work"
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No, its is silent.
I will post later a picture of how the transformers look like in a well designed SMPS, with genuine components.
What is the voltage for that SMPS?
The answer I received is they do make that noise under very light loads and I'm guessing at low volumes my little TDA7293 is a pretty light load. The other suggestion was to try the voltage adjustment at different settings. With it cranked all the way over past where I thought was the end of the travel it stopped, for now, making noise.
cresnet, where is that one from? I went with this one after seeing that Tom Christiansen used it in one of his amps that went for something like $1300.
cresnet, where is that one from? I went with this one after seeing that Tom Christiansen used it in one of his amps that went for something like $1300.
@ invaderzim
That's my SMPS, I don't have any noise there, however, I will put a light load on Saturday and see if I have noise or not, but as I remember there was no noise at all as that was an SMPS I made a year ago, I have to check my lab tests.
Yes, it is true that Tom is using it into all of his amplifiers as there is no replacement for them, but soon I will supply the replacements.
Also, that SMPS provides
1- Standby switch, no need for mechanical switches to turn ON / OFF the SMPS.
2- Auxilary supply with 12V output
3- DC Error input
if you disconnect your amplifier, you still hear the noise?
I will come back to you soon with results.
That's my SMPS, I don't have any noise there, however, I will put a light load on Saturday and see if I have noise or not, but as I remember there was no noise at all as that was an SMPS I made a year ago, I have to check my lab tests.
Yes, it is true that Tom is using it into all of his amplifiers as there is no replacement for them, but soon I will supply the replacements.
Also, that SMPS provides
1- Standby switch, no need for mechanical switches to turn ON / OFF the SMPS.
2- Auxilary supply with 12V output
3- DC Error input
if you disconnect your amplifier, you still hear the noise?
I will come back to you soon with results.
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@ invaderzim
A test was made today loading the SMPS with 100 OHM resistor drawing around 330mA and drawing 660mA in another test.
NO noise was there at all, it was deadly silent.
I think 330mA is a light load.
A test was made today loading the SMPS with 100 OHM resistor drawing around 330mA and drawing 660mA in another test.
NO noise was there at all, it was deadly silent.
I think 330mA is a light load.