Re: [sdiy] electrolytic coupling capacitors

[Roman]

2 series caps in reverse and big resistor, 1M or more put from the middle to known voltage to polarize them properly. I'm no cap expert, but I've read somewhere that caps work much better when they have some voltage between the leads, like half of the rating or so.

Roman

---- Wiadomość Oryginalna ----
Od: Peter Blackett <dragon.servicing at virgin.net>
Do: synth diy list <synth-diy at dropmix.xs4all.nl>
Data: Sun, 31 Oct 2004 23:10:46 +0000
Temat: Re: [sdiy] electrolytic coupling capacitors

>Dear List ,
>just a quick question with regard to coupling caps.
>what do you do when the voltage on either side of the caps is roughly 
>the same ?
>is it beter to arrange for there to be a small amount of offset on the 
>output on the op amp side of the coupling cap, or not. ?
>it is well worth having coupling caps on the inputs of amps/mixers.
>as you never know what circuits might put dc on the input !
>regards Peter
>
>     Theo wrote:
>> Look at the level of the "internal" reference voltage and assume the
>> "outside" reference voltage to be 0V.
>> Now mount the caps so that they are polarized correctly based on the
>> reference voltages.
>> BTW Usually this means the positive side looks at the circuit.
>> 
>> HTH
>> Theo
>>  
>
>
>