Has anyone here actually built and used a tube amp with a switching high voltage power supply? Either an AC to DC SMPS or a DC-DC boost converter.
It's an interesting idea and i'm sure it can work well, I'm just curious to hear about actual experiences.
I picked up one of those "capacitor charger" high voltage dc-dc converters with the idea of experimenting with a 12v powered approximation of an old Fender guitar amp.
A couple 6v6 and three 12ax7 should come in somewhere around 30w of b+ in actual use, right?
This is the one with a small heatsink and one fet, like here:
DC DC Boost Converter 8 32V to 45 390V High Voltage ZVS Capacitor Charging Board | eBay
Some vendors say this is a 70w supply, others say 40w and 70w "peak".
I also noticed this one:
DC12V 24 to DC 100 250V 70W High Voltage Converter Boost Step Up Power Supply | eBay
What's curious is some vendors refer to this one as a 20w supply, others as 40w, and others as 70w. This one is listed with a 100-250v range, others are rated up to 450v. Since it's in a channel extrusion it's probably slightly safer to use. But the variance in claimed power rating is interesting.
I have heard that many switching power supplies don't really "like" a large capacitive load on their output. I don't fully understand what is meant by that, though.
It's an interesting idea and i'm sure it can work well, I'm just curious to hear about actual experiences.
I picked up one of those "capacitor charger" high voltage dc-dc converters with the idea of experimenting with a 12v powered approximation of an old Fender guitar amp.
A couple 6v6 and three 12ax7 should come in somewhere around 30w of b+ in actual use, right?
This is the one with a small heatsink and one fet, like here:
DC DC Boost Converter 8 32V to 45 390V High Voltage ZVS Capacitor Charging Board | eBay
Some vendors say this is a 70w supply, others say 40w and 70w "peak".
I also noticed this one:
DC12V 24 to DC 100 250V 70W High Voltage Converter Boost Step Up Power Supply | eBay
What's curious is some vendors refer to this one as a 20w supply, others as 40w, and others as 70w. This one is listed with a 100-250v range, others are rated up to 450v. Since it's in a channel extrusion it's probably slightly safer to use. But the variance in claimed power rating is interesting.
I have heard that many switching power supplies don't really "like" a large capacitive load on their output. I don't fully understand what is meant by that, though.
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