Powering up puzzle
#10
(2017-06-14, 23:12)kevinmcc Wrote: I still think they should add a protection diode to the 3.3 V rail.
You are right. Nice shot nearby and the 3.3 volt rail is going high. There's a choke and a cap that will help keep it down -spike smoothed by choke, and eaten by cap. Same deal with 8 pin to amp except it's direct connected to +5, so what comes in gets on +5

Coax  - Blitzortung or otherwise (CATV, Satellite, etc) - should go to ground block bonded to building electrical ground, and a surge suppressor can't hurt. Like this:

https://www.3starinc.com/dual_port_coaxi...26fd6%3D32
https://www.3starinc.com/f_male_to_f_fem...ector.html
 
Same deal with the 4 pair to the preamp. Somthing like this. Be aware I've ordered one, and will be looking inside it to see if all 4 pairs have diodes and what kind. Nasty post on Amazon if it's crap. 

https://www.amazon.com/gp/product/B00UYX...UTF8&psc=1
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Messages In This Thread
Powering up puzzle - by MonkeeRench - 2017-06-12, 21:15
RE: Powering up puzzle - by kevinmcc - 2017-06-12, 23:03
RE: Powering up puzzle - by MonkeeRench - 2017-06-13, 15:51
RE: Powering up puzzle - by kevinmcc - 2017-06-14, 00:13
RE: Powering up puzzle - by MonkeeRench - 2017-06-14, 02:15
RE: Powering up puzzle - by kevinmcc - 2017-06-14, 05:03
RE: Powering up puzzle - by DelandeC - 2017-06-14, 08:42
RE: Powering up puzzle - by allsorts - 2017-06-14, 10:03
RE: Powering up puzzle - by kevinmcc - 2017-06-14, 23:12
RE: Powering up puzzle - by BobW - 2017-06-15, 04:11
RE: Powering up puzzle - by cutty - 2017-06-15, 05:38
RE: Powering up puzzle - by allsorts - 2017-06-15, 16:20
RE: Powering up puzzle - by kevinmcc - 2017-06-16, 22:57
RE: Powering up puzzle - by BobW - 2017-06-15, 12:05
RE: Powering up puzzle - by allsorts - 2017-06-15, 18:18
RE: Powering up puzzle - by Jon Point - 2017-06-16, 01:11
RE: Powering up puzzle - by allsorts - 2017-06-17, 22:39

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