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Old 6th December 2011, 02:22 AM   #801
Tea-Bag is offline Tea-Bag  United States
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Quote:
Originally Posted by buzzforb View Post
Tea Bag, what is approximate time of shipment for 3rd round?
End of January
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Old 7th December 2011, 12:43 AM   #802
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Oh snap my negative 12 volt reg. is now sitting at -26 and will not adjust down with the pot.A quick check showed neither the IRF610(Q201)nor MJE15030(Q206)appear shorted.Any guidance as to where to start looking?
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Old 7th December 2011, 12:57 AM   #803
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Look if Q201,206 show few volts between their G,S pins each. For 206 BJT look for ~0.6V between B,E.

P.S Check BC560 for 0.6V between B,E also.
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Old 7th December 2011, 01:15 AM   #804
F1 FAN is offline F1 FAN  Canada
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Quote:
Originally Posted by Salas View Post
Look if Q201,206 show few volts between their G,S pins each. For 206 BJT look for ~0.6V between B,E.

P.S Check BC560 for 0.6V between B,E also.
-5.5v between Q,S on Q201 nothing between B,E of Q206 and only about 0.13v between B,E of BC560.

Last edited by F1 FAN; 7th December 2011 at 01:27 AM.
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Old 7th December 2011, 02:35 AM   #805
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F1 fan, how does it happen? Is it over heated?
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Old 7th December 2011, 02:42 AM   #806
F1 FAN is offline F1 FAN  Canada
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Everything ran cool,as you can see in the pic in post#772 i used the chassis as heatsink.
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Old 7th December 2011, 05:48 AM   #807
Salas is online now Salas  Greece
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Quote:
Originally Posted by F1 FAN View Post
-5.5v between Q,S on Q201 nothing between B,E of Q206 and only about 0.13v between B,E of BC560.
Change 560, test, then Q201.
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Old 7th December 2011, 08:54 AM   #808
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Finally i've finished my first BiB....
It will supply a v-dac II.

output 14v

R101 2.7ohm + 3 green leds
Voltage across resistor is 0.90 v
for circa 0.340 ma...
is it good?

I'm using a 18v 60va transformer
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Old 7th December 2011, 09:58 AM   #809
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Quote:
Originally Posted by superluca71 View Post
Finally i've finished my first BiB....
It will supply a v-dac II.

output 14v

R101 2.7ohm + 3 green leds
Voltage across resistor is 0.90 v
for circa 0.340 ma...
is it good?

I'm using a 18v 60va transformer
mA or A?
How many current draws v-dac II?
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Old 7th December 2011, 10:05 AM   #810
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sorry 300ma!

i think it draws about 200 / 250 ma...

i've measured with the tester non more than 200ma for about 30 minutes...

i think my setting would be fine...
what you think about?
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