Posted this in DIY HiFi's forum at the Asylum also:
Brian....a few questions on this for a unique usage.
I'm building a pair of mono amps, separate chassis for each.
They will be a 2 stage amp with the stages direct coupled and using stacked power supplies. One P.S. at about B+ 450v and the other about B+ at 1.1KV. Driver stage tube will be a DHT EML 20b and the output tube will be an Eimac 304TL, also a DHT. Both will have independant DC power supplies for their filament voltage.
The bias requirements on the driver is -12.1 volts, filament requirement is 5v @ 1.4 amps. It will be using a shunt regulated voltage regulated DC power supply.
The bias reuirements for the 304TL are -68v, the filament requirement is 5v @ 25 amps. It will be using a stand alone SMPS (switching mode power supply)
Can I use the Active Bias Supply in this situation? and how would you propose hook-up?
Thanks and Regards
Jeff Davison
Brian....a few questions on this for a unique usage.
I'm building a pair of mono amps, separate chassis for each.
They will be a 2 stage amp with the stages direct coupled and using stacked power supplies. One P.S. at about B+ 450v and the other about B+ at 1.1KV. Driver stage tube will be a DHT EML 20b and the output tube will be an Eimac 304TL, also a DHT. Both will have independant DC power supplies for their filament voltage.
The bias requirements on the driver is -12.1 volts, filament requirement is 5v @ 1.4 amps. It will be using a shunt regulated voltage regulated DC power supply.
The bias reuirements for the 304TL are -68v, the filament requirement is 5v @ 25 amps. It will be using a stand alone SMPS (switching mode power supply)
Can I use the Active Bias Supply in this situation? and how would you propose hook-up?
Thanks and Regards
Jeff Davison
Jeffrey,
Allow me to chip in...
Short and sweet, no. It may be possible to design the ABS into the circuit, but it is unlikely and one would need the full schematic (and a designer willing to do this).
Kind regards Thorsten
Allow me to chip in...
2 stage amp with the stages direct coupled and using stacked power supplies.
.....
Can I use the Active Bias Supply in this situation? and how would you propose hook-up?
Short and sweet, no. It may be possible to design the ABS into the circuit, but it is unlikely and one would need the full schematic (and a designer willing to do this).
Kind regards Thorsten
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