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Old 8th June 2021, 10:13 PM   #10441
drteming is offline drteming  United States
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Blame it on Google Pixel's "night sight" setting.
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Old 10th June 2021, 07:39 AM   #10442
Glossmaster is offline Glossmaster  Australia
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Quote:
Originally Posted by gerrittube View Post
Hi GlossMaster,

What input impedance did you order for the Tortuga board? The default 20K or a different value?

Do you notice any heating effects, using the LDR module?

Regards, Gerrit
Hello Gerrit
Yes, default 20K impedance. No I have not noticed any heating effects but also did not pay attention specifically to it. However, i might have noticed something was off if that would have been the case.

Stephan
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Old 11th June 2021, 07:02 PM   #10443
drteming is offline drteming  United States
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Got a pair of red tubes. Looks cool. Sounds the same.

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Old 14th June 2021, 07:09 AM   #10444
arg_ is online now arg_  Greece
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Default a colorful line preamp...

..full of magic eyes

two 1629 as voltage amplifiers and one dual EM83 to dance to the music (switchable)
OK, there is also an ECC82 as CF hidden inside
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Old 15th June 2021, 11:00 AM   #10445
cooloox is offline cooloox
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Originally Posted by drteming View Post
Got a pair of red tubes. Looks cool. Sounds the same.
Orgasmic.

Quote:
Originally Posted by arg_ View Post
..full of magic eyes

two 1629 as voltage amplifiers and one dual EM83 to dance to the music (switchable)
OK, there is also an ECC82 as CF hidden inside
So, could we look inside?
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Old 15th June 2021, 06:19 PM   #10446
arg_ is online now arg_  Greece
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Originally Posted by cooloox View Post
So, could we look inside?
it's a bit of a mess currently and I plan to rearrange and tidy up.

with regard to pcb's, the one on the left is a proximity sensor on/off switch, right is the EM83 driven by a NE5532 and top is the HV capacitance multiplier together with a slow turn on filament supply based on LT1086 and 2N4036
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