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hesener
diyAudio Member

Join Date: Mar 2005
Location: Munich, Germany
Quote:
 Originally Posted by FdW Update: The numbers above for power consumption are the minimal's the maximum's are (when the RIAA is disconnected) 34 * 320 = 10.88 Watt or 40 * 320 = 12.8 Watt. Regards, Frans.
Good input - the new Paradise has jumper positions on the PCB so the regulators can be tested and adjusted before hooking up the amplifier section. Definitely something to be done on the bench, not in the closed case, and not to leave it idling for hours since the heatsink will be pretty hot then....

 29th May 2012, 10:01 AM #5982 Joachim Gerhard   diyAudio Member     Join Date: Mar 2009 I would then load the PSU with resistors that simulate the current draw of the phono section. That resistors must of cause stand enough wattage not to get too hot.
RCruz
nhinstruments
diyAudio Member

Join Date: Sep 2006
Location: Wallis
Quote:
 Originally Posted by FdW Sorry to see this a little late. The PSU runs at 160 mA, so you need 2 x 160 mA = 320 mA minimal. You need 34 Volts on the regulator input (or a bit more, up to 40 Volts will be o.k.). The power disipation will be 34 - 24 * 320 = 3.2 Watt minimal ans 40 - 24 * 320 = 5.2 Watt maximall. More information can be found in message 5650 Mpp. Regards, Frans.
Thank you Frans.

That leaves enough headroom to use a 30V TX. In fact I will use two 80VA 30V TX to build a double mono setup.

Is 40Vin the absolute max value ? Can I input 42V ?
__________________
RC

FdW
diyAudio Member

Join Date: Feb 2009
Location: Both feet on the ground (near Gouda)
Quote:
 Originally Posted by RCruz Thank you Frans. That leaves enough headroom to use a 30V TX. In fact I will use two 80VA 30V TX to build a double mono setup. Is 40Vin the absolute max value ? Can I input 42V ?
It will handle 42Volts, in a way I like that number; I may even prefer it The components selected will handle even more than that, but the heat sink will not be sufficient if you pass 15Watts per channel.

See also: The Hitchhiker's Guide to the Galaxy - Wikipedia, the free encyclopedia

 29th May 2012, 08:20 PM #5985 Joachim Gerhard   diyAudio Member     Join Date: Mar 2009 42, ok, the answer to everything !
 30th May 2012, 12:39 AM #5986 brianco   diyAudio Member     Join Date: Aug 2005 Location: Scottish Borders - Kelso; on the famous Tweed River! That's the year I was born....got to be perfect!!
 30th May 2012, 08:19 AM #5987 RCruz   nhinstruments diyAudio Member     Join Date: Sep 2006 Location: Wallis Ok 42 will do. Please refer also to: Stranger in a Strange Land - Wikipedia, the free encyclopedia __________________ RC
 30th May 2012, 12:19 PM #5988 Bksabath   Banned   Join Date: Dec 2007 Hesener you have paypall... Going to start matching 1000 each BC32740BU and BC33740BU with this DIY Curve Tracer for PC all from Fairchild direct same production bacth Shull be prety tight If any of you need same just PM.
 30th May 2012, 01:17 PM #5989 Joachim Gerhard   diyAudio Member     Join Date: Mar 2009 You have a curve tracer, great. I would be interested if the BC are symmetrical. The models show good symmetry.
hesener
diyAudio Member

Join Date: Mar 2005
Location: Munich, Germany
Quote:
 Originally Posted by Bksabath
many thanks

hadn't seen this curve tracer, really cool!!

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