[Boatanchors] Replacement Filter Capacitors for Drake L-75 Linear Amplifier

[Rob Atkinson]

I'd look for one or two 30 mfd 4 or 5 KV oil caps and put them in an
external clear plastic box you can make with plexiglass and wire them
in with h.v. wire.  Set the box next to the cabinet.  Kiss equalizing
resistors, polarity, cap blowout failures goodbye.  One 100K 50 watt
vitreous enamel bleeder resistor across the cap.

73

Rob
K5UJ

On Fri, Mar 24, 2017 at 12:17 PM, D C _Mac_ Macdonald <k2gkk at hotmail.com> wrote:
> I have no real idea!  Dual safety interlocks preclude operation of any kind
> with case cover removed.
>
> Drake states nominal output of ~2900 VDC at no load, and ~2600 VDC @ 450 mA
> full load.  I'm presuming 8 caps rated at 450V DC.  Harbach uses 220 uFd and
> 450 VDC for their L-4 and L-7 amp p.s. kits but those are mounted vertically
> with screw terminals at one end.  The L-75 uses 8 caps mounted flat on a
> vertically mounted circuit board.
>