Using a Jensen 4 pole cap?

[captain]

Can anybody tell me how you could use a Jensen 4 pole capacitor in an application that only needs to use 2 of the poles? Is it that 2 are positive and 2 negative, if so could you just bridge the 2 positive together and likewise the negative and then use as one of each. Or just use one of the negative and one of the positive and leave the other tags alone.

Thanks



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[Puffin]

What is the orientation of the pins ?

[captain]

Don't know I haven't bought any yet just gathering info.

[i_should_coco]

Unless the extra terminals are just for show, then yes, you can connect the positives together and the negatives together. If they are just for show, then there's no point.

[James Evans]

I'd check the datasheet and see what the pin configuration is. If they're like the BHC T-nets then there is a good reason for the 4 terminals. I've never used them, but I think you connect one set of terminals to the psu side and another to the load side.

[captain]

James Evans wrote:

I'd check the datasheet and see what the pin configuration is. If they're like the BHC T-nets then there is a good reason for the 4 terminals. I've never used them, but I think you connect one set of terminals to the psu side and another to the load side.

Thanks for your useful comment. This should answer it.




What is a Jensen[/b] 4[/b]-pole[/b] electrolytic[/b] capacitor? And please tell me more about them in detail....
A Jensen[/b] 4[/b]-pole[/b] electrolytic[/b] capacitor is a very high performance capacitor with extremely low inductance, for high frequency output filtering and for energy storage circuits in high end audio equipments.

No matter how fast the amplifiers signal processing circuits are, you cannot utilize that speed if your power supply is too slow to follow rapid signal changes. The power supply's reservoir capacitor constitutes a vital element in the amplifier chain effecting the signals on the main signal paths as well, because the most power amplifiers reservoir is conceptually placed in series with the loudspeaker line.

The main issue is not only that the capacitor can give you enough charge and quickly enough, but the attenuation of the power supply toward the amplifier. In spite of the fact that the audio band is nominally 20-20 kHz, the stability of the amplifier and the overall sound quality is strongly influenced by reservoir capacitor behaviour at very high frequencies.

The function of the reservoir capacitor is not only to store energy, but also filtering, providing decoupling between the power supply and the amplifiers signal processing circuits. However the capacitors filtering characteristic plays a very important role in decoupling and suppressing unwanted transients and other i.e. digital high frequency noises.

The very low transfer impedance value at higher frequencies make the Jensen[/b] four pole capacitor applicable also in other high frequency and digital signal handling equipments and circuits as preamplifiers, A/D and D/A converters, switched mode power supplies etc

The four pole electrolytic[/b] capacitors have other additional advantages, which are especially useful for reservoir capacitors in high end amplifiers. If you use a two terminal, two pole capacitor the entire AC and all noises coming from the power supply appear on the capacitor and are sent toward the high frequency signal path, disturbing the load because of the common resistive and inductive parts which force the input and the output together electrically.

All these disturbances can be avoided by using a four terminal capacitor construction, where the AC on the input terminal is decoupled from the load. The inductances and resistances coming from the lead to foil connections (tab foils) form an advantageous filter circuit which attenuation increases with frequency. As a consequence of the damping/suppressive effect of this inherent LR filtering, often a single four pole capacitor can replace a complicated filter arrangement. This can bring a very significant savings!!

All in all, these capacitors bring the very best in peformance to digital/analog power supplies that we've heard to date!!

[James Evans]

that'll be the one - they are supposed to be very good, as are the t-nets - a noticable step up in performance. Never used them myself as they are also very expensive...

[Professor Chaos]

Jensen Data Sheet

[captain]

Professor Chaos wrote:

Jensen Data Sheet

Cool nice one