lots of parallel caps, why?

[KlausB]

Originally posted by millwood

really? you can reduce inductance by paralleling them?

I think yes.

Paralleled inductances follow the equation:

1/Ltotal = 1/L1 + 1/L2 + 1/L3………………

Greetings
KlausB

 

[thylantyr]

Throw the white towel and use both methods.

Parallel caps, one near each output transistor,
plus the large cans on the power supply

 

[JojoD818]

Parallel caps, one near each output transistor,

Nice idea! But only if it will fit my enclosure.

JojoD

 

[Petter]

Solder a film cap directly across power supply at or near collectors of output transistors.

 

[fdegrove]

Hi,

Just don't forget that by //ing multiple caps you're bound to augment the used surface area which in turn will augment ESL...

In a pretty much unpredictable way.....

Cheers,😉

 

[phase_accurate]

The increase in surface area might help to run them cooler, and in turn increase lifetime.

And it seems that the ripple current that many parallel caps can bear is indeed larger than that of a single one.

Example Evox RIFA PEH 169 / 63 V @ 105 deg & 100 Hz:

2200 uF : 4.1 A
10000 uF : 9.9 A




Regards

Charles