| -(daz84)- |
| Hello everyone. I need some advice or help. I have two ucd180 modules connected to a ucd-supply-st. The amps work fine i think but they like to turn off when they please and the blue leds go out. They wont turn on at all now.. Has anyone got any ideas? Thankyou.. |
|
|
| RX5 |
what is your load ?? any adttl heatsinks??
post in more info about your setup... |
|
|
| -(daz84)- |
| Thanks for the reply. Do you mean the speaker load? The transformer is runing at 42 volts. The amps are attached to the bottom of a case that i made. I have not pushed the amp and they both did the same thing turning off and on but now they dont turn on at all. I have checked all my connections via the diagrams twice before hookup.. |
|
|
| -(daz84)- |
| I also put a power led on the power supply unit and it is on.. Im very confused at this. It will not turn on at all now.. |
|
|
| Jan-Peter |
| quote: | Originally posted by -(daz84)-
I also put a power led on the power supply unit and it is on.. Im very confused at this. It will not turn on at all now.. |
Hi, 42V AC gives you 59VDC, this is to high. The overvoltage protection starts to work.
Read the datasheet/manual...... ;)
Jan-Peter |
|
|
| -(daz84)- |
| Thank you so much for the input! Do you think i have damaged them at all? |
|
|
| Jan-Peter |
No, I don't think so. Try it with a 30VAC tranformer.....
Jan-Peter |
|
|
| -(daz84)- |
| Thanks for the help. I feel dumb now...I suppose you live and learn lol. I am ordering the correct transformer so I hope the ucds are ok. |
|
|
| WJMIII |
additional UcD180ST question
I am a super noob in electronics, and didn't find my answers in a faq or in my searching last night. I am assuming that most people are more advanced so my inquiry is bone-head noob! I am not a complete novice, just a UcD novice.
so if I have a nice 120VAC/42V transformer, that 42V feed into the power supply will be too much - I didn't get that from the data sheet - well, that is good to know
so I couldnt go 120>trans/42V>UcD180ST
and I couldn't go 120/trans/42v>UcD STpower supply> 180ST
but more like 120V>transformer>30V>Ucd ST power supply>180St
is that correct?
I thought I saw the max input for the PS was 42V, and I thought my transformer 42V output would work - |
|
|
| glt |
Transformers convert AC to AC, Power Supplies convert AC to DC, the UCD works on DC, so you can't connect a transformer directly to the UCD
DC voltage = 1.41*AC voltage, so 42 volts AC = 59V |
|
|
| WJMIII |
| durr - wow - I am an idjit - thanks for saving mu new UcD boards! |
|
|
| -(daz84)- |
| Just to let you know my amps are fine! I have my new transformer installed. I was a tube guy now converted to class D. Thankyou Hypex! and thankyou Jan. |
|
|
|
