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Old 27th August 2015, 07:08 AM   #1
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Default Bipolar caps

Can I use bipolar caps for the input dc block?
Bipolar caps look like RD electro caps but are not polarized.
Here is a sample:
http://www.altronics.com.au/p/r6560a...lar-capacitor/
Thanks

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Old 27th August 2015, 07:31 AM   #2
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Yes of course you can BUT ensure you remain well within the voltage rating, treat it as an electrolytic in that respect
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Old 27th August 2015, 08:00 AM   #3
DF96 is offline DF96  England
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And provide a ground leak resistor (or similar) to cope with the leakage current. Generally, you use electrolytics in low impedance situations and film caps in high impedance situations.
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Old 27th August 2015, 09:12 AM   #4
AndrewT is offline AndrewT  Scotland
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Can you adopt a film capacitor at the input?

Typically a 100k for Zin will require a 1uF,
whereas a 22k for Zin will require 4u7F
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