Chris
Sorry for slow reply ... been having intermittant e mail problems.
The value is not critical. What is required is a good ground at that point.
Whatever combination of capacitors works best is what you want to go with. No
doubt this will vary from layout to layout and capacitor type to capacitor
type. Use a scope to monitor voltage across the capacitors. Don't use the scope
probe ground lead or hook clip as this will not give an accurate reading of
what's going on. Instead, remove the hook clip assembly and fashion a piece of
#14 bare copper wire with several turns and a pigtail. The turns should be
sized to fit tightly over the scope probe ground sleeve. The short pigtail can
be temporarily soldered to the circuit board such that the 1/4" scope tip comes
in contact with the capacitor. The idea is to keep the scope leads as short as
possible.
Jay
----- Original Message -----
From: Chris Wilson <[email protected]>
Reply-To: <[email protected]>
To: <[email protected]>
Sent: 5/11/2019 1:44:05 PM
Subject: MF amp
________________________________________________________________________________
Hi Jay,
Sorry to be a pain, nearly finished the 1kW MF amp of your design,
please clarify if the center tap transformer to ground cap stack needs
to be exactly 0.56 uF, or if it's a typo and needs to be only 0.5 uF,
what's confusing me is where it states stacking just 0.1 uF MLC
chips... Thanks :)
--
Best regards,
Chris mailto:[email protected]
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