humbucking filter choke - how different?

[zobsky]

What is and how is a humbucking filter choke different from a normal power supply filter choke?

Can it be used as a PS filter choke, and are there any disadvantages/advantages? Its specs are:
16 Hy/175ma/96 ohms. Parallel 4 Hy/350ma/24 ohms


thanks, vin

 

[zobsky]

never mind, a web search turns up that a hum bucking choke taps a bit of the voltage and feeds it out of phase to the output sde, hence cancelling PS ripple.

if this is correct, i wouldn't want to use this for a hifi circuit

 

[fdegrove]

Hi,

if this is correct, i wouldn't want to use this for a hifi circuit

Why not?

Cheers,

 

[zobsky]

wouldn't tapping ripple and purposefully introducing it later in the circuit act like a sort of "feedforward loop". nothing inherently wrong in that, but as a beginner, i'd like to keep it simple.

that auction just ended, ..but if you think it might not be a bad idea, please explain and i will keep my eyes open next time.

BTW, .. this is for the 6sn7 pre-amp you helped me get working sometime ago. works well, .. and i have built in a 6bq5 SE amp too, but the thing hums, ..

what kind of current capability should i look for in a choke for this arrangement

thanks

 

[fdegrove]

Hi,

never mind, a web search turns up that a hum bucking choke taps a bit of the voltage and feeds it out of phase to the output sde, hence cancelling PS ripple.

Nothing's ever perfect, but that's how it works.

BTW, .. this is for the 6sn7 pre-amp you helped me get working sometime ago. works well, .. and i have built in a 6bq5 SE amp too, but the thing hums, ..

I remember that. Hum is usually always induced by bad lay out...maybe we can solve that too?

what kind of current capability should i look for in a choke for this arrangement

What's the current going through the circuit?

Cheers,