Tube Amps / Music Electronics
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|previous: Steve A. Bruce:
|7/20/2000 9:28 AM|
|DCH||Re: Lightning clone finished: ouch, high voltages!|
Thanks guys --
The chassis is still out of the cabinet (in fact, there IS no cab yet) so I might try linking in some of those zeners. There's plenty of room and easy access to get them between the PT CT and ground.
1) How many should I use (eg to get the B+ down from 370 to 350)?
2) Is there an approximate predictable voltage drop per-zener, or indeed is it 9.1v down per each you add on?
3) I've never seen a zener in my life, but can order them from Mouser if there aren't any available here in the UK. BUT: is there a polarity to them, and if so, which direction do I mount them considering they're going to ground?
I certainly like the idea of simply popping in a Sovtek 5Y3 and will definitely do that too, but it's nice to have the options. As a halfway house between the two, it's easy (for now!) to get those Mullard GZ37s at a good price, and I presume they're pretty sturdy rectifiers, so a zener or two plus that might be just right... but maybe I'm making it too confusing for myself.
Well, thanks again.
|Steve A. Dave:|