[Amps] Amp output power

[Scott McDonald]

While we're on 3 cx800s, after some good advice I've decided to rebuild my old Alpha 374 with just a single 3cx800, as I don't run more than 700 -800 watts anyway.

I've worked out the mechanics and air system, but curious what folks would suggest for the best value swamping resistor network ( or whether I'd be ok as built) and recommended driving power, to stay below 30 mils grid current.  I can drive at any level easily.

Thanks, Scott

Make something good happen!

> On Aug 24, 2015, at 10:49 AM, Jim Brown <jim at audiosystemsgroup.com> wrote:
> 
>> On Sun,8/23/2015 7:13 AM, Kevin Stover wrote:
>> The non-pulse rated 3cx800 max ratings are 2250V plate voltage, 0.6 plate amps. Typical operation at 2200V and 0.5A with 23W of drive will get you 750W AB2 output. 
> 
> That's close to how they run in Ten Tec Titan 425 amps -- using an N8LP LP100A to set output power to 1.5kW, I end up with about 50W drive on most bands.
> 
> As has been noted, these tubes don't like too much grid dissipation. I keep the switchable meter in the Titans set to watch grid current, and try to stay below 60mA for the pair. That's about half of their rating. Achieving that means careful matching of the output stage to the load.
> 
> 73, Jim K9YC
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