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Old 6th June 2012, 07:12 PM   #911
RollE2k is offline RollE2k  Sweden
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Oh, i totally missed that calculator, helped alot!
One question then - approx how much "extra" current (above the circuit usage) should you normally have? I'm asking because my circuit will probably use around 5V/700-800mA.
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Old 6th June 2012, 07:23 PM   #912
Salas is offline Salas  Greece
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100-200mA extra is very good headroom for good impedance.
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Old 6th June 2012, 07:37 PM   #913
RollE2k is offline RollE2k  Sweden
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When calculating i can choose too have all D102A-D104 populated, but if i have all of them i need higher wattage value of the R101, so i wonder - why would i want to run more than three diodes there? :-)
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Old 6th June 2012, 07:41 PM   #914
Salas is offline Salas  Greece
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9610's Vgs rises to a point that leaves too little voltage difference for you to easily set current if you target >0.4A. So 4 leds help you better in your case.
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Old 6th June 2012, 08:35 PM   #915
RollE2k is offline RollE2k  Sweden
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I have two circuits one that i will run with a 15v transformer 350mA circuit (450mA CCS), since i will need 5v vdrop i probably can run 13v output at max. Then the second circuit i had calculated wrong, that one will run 5v 550mA (650mA CCS). Should i use 4-leds for both of them?
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Old 6th June 2012, 08:53 PM   #916
Salas is offline Salas  Greece
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Yes, both are falling in the ''4 are easier for setting'' region.
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Old 7th June 2012, 09:35 AM   #917
roender is offline roender  Romania
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How much the shipping cost for two BiB and all the mini kits for populating the boards?
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Old 7th June 2012, 02:28 PM   #918
bucurb is offline bucurb  Romania
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Default shipping costs

Dear Tea-Bag,

I did register:
4 BIB pcbs, 76 USD
6 IRF+ Minikits, 60 USD
3 IRF- Minikits, 30 USD
2 BJT+ Minikits, 20 USD
1 BJT- Minikit. 10 USD

shipping to Romania (EU) 8 USD (for 4 BIB boards ), total amount:
204 USD,
in my opinion.
I would wish to pay today, but not before receiving your green light, please.

Warm regards,
Ion
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Old 7th June 2012, 02:39 PM   #919
Tea-Bag is offline Tea-Bag  United States
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Quote:
Originally Posted by bucurb View Post
Dear Tea-Bag,

I would wish to pay today, but not before receiving your green light, please.

Warm regards,
Ion
Green light given. Well a green arrow anyways.
__________________
Salas Boards 2014 #2 SHIPPED |F5TC board and power supplies available PM | Hot-Rod DCB1 boards and kits available PM |Mesmerize kits available (no boards)
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Old 7th June 2012, 10:15 PM   #920
RollE2k is offline RollE2k  Sweden
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Tea-bag, i have now payed for:
1x PCB $19
2x IRF+ Minikits $20
1x IRF- Minikit $10
1x Shipping $6
Total: $55
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