PS Filter Caps / re-cap

[STEEDA]

Came across a board today which has two 4700uF / 50V Lytics and I noticed that I had to desolder THREE leads (per cap) instead of two! My best guess is that one of the lugs serves as a "support" so the Caps cannot bend on the board.

Any "other" ideas? I don't remember seeing a 3 lead cap before this BUT then again, this IS an old board, so that could be why!

Thanks



S-

 

[Nigel Goodwin]

It's common, as are four tags - the others are quite rightly mechanical supports, sometimes they are isolated, but often connect to one of the other terminals (usually negative).

 

[RCinFLA]

Metal can electrolytics commonly had two different caps in one package. They shared a common negative terminal.

 

[Nigel Goodwin]

Metal can electrolytics commonly had two different caps in one package. They shared a common negative terminal.

Not 4700uF at 50V - you're thinking of MUCH older valve electrolytics, as used in old radios and TV's.