Jeff Carter wrote:
> Can anyone tell me how much drive the SB-220 needs to make 1.5KW?
>
> I've seen several references that 100W isn't enough drive for this
> amp. How much would it take?
>
> Jeff/KD4RBG
> _______________________________________________
> Amps mailing list
> Amps@contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
>
The SB220 was never designed to "make" 1500 watts. It was designed for 1000
watts INPUT (plate volts x plate current). At 60% efficiency, look for 600 out.
Just because it has 3-500's, the tank coil and power supply were never meant
for
more than 600 out.
Because of the usual low plate voltage(2200-2400) trying to drive harder will
cause extra high grid current and blow the tubes.
--
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|