Caps from Digikey are cheaper for us in Europe. Same Panasonic TSHA 10000 uF cost more than 8€ from RS or Farnell, while 6,7€ from Digikey. Farnell is cheaper than RS.
Hi Steen,
I got all materials. ZV9 boards and PS are ready, a big 500VA transformer 2x35VDC is here, and chassis, binding posts and I've printed already PassDIY and ZENv9 stickers.
Now I can't postpone anymore the first amps test for the fear to fry them (they are su cute )....
Have you any hint how to proceed? (Maybe a 12V supply to start?)
I know other PassDIY newbees have these doubts.
Then there is the POT: how to behave with this?
Ciao
Thomas
Hi Steen,
I got all materials. ZV9 boards and PS are ready, a big 500VA transformer 2x35VDC is here, and chassis, binding posts and I've printed already PassDIY and ZENv9 stickers.
Now I can't postpone anymore the first amps test for the fear to fry them (they are su cute )....
Have you any hint how to proceed? (Maybe a 12V supply to start?)
I know other PassDIY newbees have these doubts.
Then there is the POT: how to behave with this?
Ciao
Thomas
If you want to be carefull, you can use the Lightbulb method to start the amp.Have you any hint how to proceed?
I dont remember where it is described, but I am sure it is here on DIYaudio somewhere. I just fired up 1 channel at the time, but I am pretty reckless
P1 is adjusted to get 1/2 the DC supply voltage at the output. (Before the outputcap Hopefully there isnt any DC at the speakerterminals) First measure your actual supply voltage, then adjust the trimpot till you get a reading of half of that.Then there is the POT: how to behave with this?
Readjust after the amp has cooked for an hour or so.
Its always pretty exciting to fire up an amp the first time and a great thrill when it plays music too Good luck.
Steen
Now I can't postpone anymore the first amps test for the fear to fry them (they are su cute )....
Good luck!
steenoe said:Its always pretty exciting to fire up an amp the first time and a great thrill (when) IF it plays music too
IF it plays music too
Offcourse it does And I am certain that the ZenV9 is a great mate for your efficient speakers, Thomas. I am pretty sure that you will like it a lot
Steen
Anyone in Europe who might be interested in Loveltechs may wish to contact me by private email :
http://www.diyaudio.com/forums/showthread.php?postid=1087073#post1087073
Patrick
http://www.diyaudio.com/forums/showthread.php?postid=1087073#post1087073
Patrick
Please refer to this :
http://www.diyaudio.com/forums/showthread.php?postid=1087179#post1087179
Patrick
http://www.diyaudio.com/forums/showthread.php?postid=1087179#post1087179
Patrick
LU1014D Id vs Vgs
As far as I know, no one has yet published the Id vs Vgs curves for the LU1014D at about 1A, other than the curves in the datasheet.
I did that today, and here is one typical result. A 1-ohm 10W metal foil resistor is connected to the source to measure current (see Nelson"s ZV9 article, Fig. 10). Voltage from Drain to 1R resistor free end is 3V. Gate is connected to 0V via 1 500R resistor, and driven by a unctions generator with a 100Hz triangular wave between -2V and +1V.
Merry Christmas,
Patrick
As far as I know, no one has yet published the Id vs Vgs curves for the LU1014D at about 1A, other than the curves in the datasheet.
I did that today, and here is one typical result. A 1-ohm 10W metal foil resistor is connected to the source to measure current (see Nelson"s ZV9 article, Fig. 10). Voltage from Drain to 1R resistor free end is 3V. Gate is connected to 0V via 1 500R resistor, and driven by a unctions generator with a 100Hz triangular wave between -2V and +1V.
Merry Christmas,
Patrick
Attachments
Re: LU1014D Id vs Vgs
tnx for X-mass present
EUVL said:As far as I know, no one has yet published the Id vs Vgs curves for the LU1014D at about 1A, other than the curves in the datasheet.
I did that today, and here is one typical result. A 1-ohm 10W metal foil resistor is connected to the source to measure current (see Nelson"s ZV9 article, Fig. 10). Voltage from Drain to 1R resistor free end is 3V. Gate is connected to 0V via 1 500R resistor, and driven by a unctions generator with a 100Hz triangular wave between -2V and +1V.
Merry Christmas,
Patrick
tnx for X-mass present
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