600V-DC Electrolytic Capacitors for Tube Amp Applications - any Experiences ?

Jump to Latest
tiefbassuebertr

tiefbassuebertr

Member
Joined 2005
tiefbassuebertragung.de
#1
Such capacitors I have never seen before:
https://www.eeworldonline.com/cde-snap-in-aluminum-electrolytic-caps-handle-600-vdc/
https://www.cde.com/new-product/380lx-and-381lx/
https://eu.mouser.com/ProductDetail/KEMET/ALA7DA331EE600?qs=sGAEpiMZZMvwFf0viD3Y3a3yb5D6sPUg3Mw1Ii53gqabpUqe8jhz/A==

The usual method of connecting electrolytic capacitors in series to increase the value for VDC (when the ESR value doubles) should therefore be a thing of the past. In case of replacements of four caps all can operate in parallel mode up to 550VDC supply voltage.
Are there any experiences ?
 
#2
Apparently there is a voltage limit caused by electrolytic cap chemistry: 400V is easy peasy, 450V still "normal", 500V apparently the edge of the precipice.
Can´t ´point to a specific link but component shop lists seem to back this.

In "the old days", think 50s 60s , most tube amp manufacturers used 2 "available" caps in series, but a few, notably Ampeg,used some 600V rated ones.

Visibly they were looonnng "dynamite cartridge" type waxed cardboard tubes.
When opened, they had 2 x 300/350V caps in series, go figure.

s-l1600.jpg


Modern ones might have something similar, but in a more elegant package 🙂
 
  • Like
Reactions: indianajo
#4
  • Like
Reactions: JMFahey
You must log in or register to reply here.
Top Bottom