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About possible Babelfish J interest
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Old 8th November 2018, 08:57 PM   #481
Zen Mod is offline Zen Mod  Serbia
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About possible Babelfish J interest
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Old 8th November 2018, 08:58 PM   #482
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lol, i did search, looks much the same as on your build it's just that the difference between them seems negligible, was wondering if there's a chance of damaging the resistor if the wattage is bit smaller..
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Old 8th November 2018, 09:09 PM   #483
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Probably overthinking this ordering the 0.6W, thanks for pointing it out !
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Old 8th November 2018, 09:42 PM   #484
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Most of these resistors are very conservatively rated. Unless a position calling for 1 watt, 3 watt, 5 watt and so on 1/4 is usually adequate, sometimes 1/8 watt. But for better sleep....My F5 boards from Peter Daniels required standing up soldier style (which I did) anything over 1/8 watt.

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Old 12th November 2018, 07:07 PM   #485
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@Russel, thanks for the tip, will take it into account when soldering resistors.


Hey ZM, any news on psu schematics ??

Anyways, started stuffing the board and noticed small mismatch between Q5 transistors you've sent (BC546) and labels that are attached (BC556) - see photo. Let me know if it still OK to go with it.
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Old 12th November 2018, 07:34 PM   #486
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my bad

anyway - these are non-matched - random , so use anything you have in drawer

regarding schematic of PSU , same applies as in Babelfish M25, SissySIT - general building tips and tricks , post #113

Click the image to open in full size.
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Old 12th November 2018, 08:16 PM   #487
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No problem, found couple BC556 options, one - 80V 0.2A 0.5W, other - 65V 0.1A 0.5W. Guess both would work.

BTW, I had to pick different values for few resistors (due to unavailability), am I ok staying in 10% threshold?
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Old 12th November 2018, 08:38 PM   #488
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which ones?

why hurry?
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Old 12th November 2018, 09:14 PM   #489
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Quote:
Originally Posted by Zen Mod View Post
which ones?
R17-18 - 5.1k got 5.6k
R22-23 - 1.5r got 1.6r

Quote:
Originally Posted by Zen Mod View Post
why hurry?
well, the availability might never be there anyways, i got it in lower wattage so might play around by connecting in parallel or in series to get it right if it's important to have exact values
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Old 12th November 2018, 09:49 PM   #490
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5K6 instead of 5K1 ok , and even better putting one 5K6 and another 4K7

R22, R23 - these are 1K5 , not 1R5

you can use 1K6
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