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 NEW  Matt presents bias and operation data for the 6V6 tube in SE operation - 6V6 Single-Ended (SE) Ultra Linear (UL) Bias Optimization.

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It is currently 14 Nov 2019, 07:30

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PostPosted: 05 Mar 2019, 03:29 
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Joined: 22 Feb 2019, 01:04
Posts: 24
Location: Bruce Street, Auckland, New Zealand
Attachment:
1.JPG
More than 40 years ago, I used to do a single tube. I will use this drawing today and do it again.
1 .Variable capacitor (differential double connection, only one of them)
2.3AG1
3.50 mm Medium wave bar
4.Output transformer
5. 2AP9
6.High frequency transformer(3mH) DIY
7.R 68K
8.C 5100P , 470P
Transform the mouse into a single tube machine(first part)

Unfinished(Look at the picture .see you tomorrow)


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PostPosted: 05 Mar 2019, 03:33 
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Joined: 22 Feb 2019, 01:04
Posts: 24
Location: Bruce Street, Auckland, New Zealand
Production process and drawings


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PostPosted: 05 Mar 2019, 16:09 
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Joined: 22 Feb 2019, 01:04
Posts: 24
Location: Bruce Street, Auckland, New Zealand
Do a little every day:
Power switch and shelf


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PostPosted: 06 Mar 2019, 21:54 
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Joined: 22 Feb 2019, 01:04
Posts: 24
Location: Bruce Street, Auckland, New Zealand
Making a high circle:
1.200 turns on a 0.1 mm copper wire ferrite
2.Parts up to PCB


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PostPosted: 07 Mar 2019, 00:30 
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Joined: 23 Feb 2017, 02:02
Posts: 559
Seems like a cool project


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PostPosted: 07 Mar 2019, 17:38 
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Joined: 22 Feb 2019, 01:04
Posts: 24
Location: Bruce Street, Auckland, New Zealand
Remove PC expired motherboard CMOS battery holder


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PostPosted: 07 Mar 2019, 17:43 
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Joined: 22 Feb 2019, 01:04
Posts: 24
Location: Bruce Street, Auckland, New Zealand
Production of regenerative capacitor
1 segment of copper wire with a diameter of 1 mm
2 Around the 0.1 mm enameled wire
3 Capacitance meter measurement up to 25 P(Used in adjustment)


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PostPosted: 08 Mar 2019, 17:25 
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Joined: 22 Feb 2019, 01:04
Posts: 24
Location: Bruce Street, Auckland, New Zealand
Battery rack installation

Can work normally


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PostPosted: 09 Mar 2019, 01:15 
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Joined: 22 Feb 2019, 01:04
Posts: 24
Location: Bruce Street, Auckland, New Zealand
Further adjust the size of the regenerative capacitor, just no "scream"

Auckland, New Zealand, can clearly receive 15 stations from AM China Wave
Very good sound!

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PostPosted: 09 Mar 2019, 20:57 
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Joined: 23 Feb 2017, 02:02
Posts: 559
Is that the thing done? I thought there was supposed to be some valves or something as described in op


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