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Old 13th December 2018, 05:40 PM   #1141
PH104 is offline PH104  United States
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The diyAudio First Watt M2x
This is a nice reference for semiconductor mounting - this looks like a revised version of an old paper from Motorola:

https://www.nxp.com/files-static/rf_...ote/AN1040.pdf

Phil
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Old 13th December 2018, 10:06 PM   #1142
Itsmee is offline Itsmee  England
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Quote:
Originally Posted by xrk971 View Post
...have you thought about how you would cut a hole in one?...
Don't need one, using a thick clamping bar will do the job nicely.
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Old Yesterday, 08:55 AM   #1143
marconi118 is offline marconi118  Germany
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where to find the compression conical washer?
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Old Yesterday, 06:04 PM   #1144
chede is offline chede  Germany
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Quote:
Originally Posted by marconi118 View Post
where to find the compression conical washer?

Look for "Tellerfedern" / "Belleville Washers" at your favourite nuts & bolts supplier ... a Google search returned numerous online shops in Germany.


Best regards,
Claas
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Old Yesterday, 11:28 PM   #1145
Sesquipedalio is offline Sesquipedalio
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Hi - I have a question on the RV1 orientation: I see a pins 1, 2 & 3 marked on the resistor and on the PCB, a square solder point and two circular ones. Some resources say orientation does not matter, while some diagrams indicate it does. I do not see anything on the schematic or in the forums which tells me which is true. Is there a direction required for correct installation? Thank you all!
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Old Yesterday, 11:53 PM   #1146
tsmith1315 is offline tsmith1315  United States
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Generally, the odd pad on a component is pin#1. Look at page 1 of this thread, post# 2, first picture for a helpful image.
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Old Today, 12:12 AM   #1147
6L6 is offline 6L6  United States
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RV1 doesn't matter how it's inserted in the PCB.

Since you will only adjust it when you are measuring something, you'll merely turn the pot the direction that gets the required result.
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Old Today, 06:24 PM   #1148
xrk971 is offline xrk971  United States
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Progress on verifying the Melbourne SMT version.
Click the image to open in full size.
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