Tom,
It says it on page two of the Eimac 3-500Z spec sheet. See the one the link was
provided for earlier.
Quote;
RF Linear Amplifier
Grounded-Grid, Class B
Maximum Ratings
Typical operation (Minimum distortion products at 1 KW PEP input)**
DC Plate Voltage 2500V
Zero Signal DC Plate Current* 130 mA
Single-Tone DC Plate Current 400 mA
Single-Tone DC Grid Current 120 mA
Two-Tone DC Plate Current 280 mA
Two-Tone DC Grid Current 70 mA
Peak Envelope Useful Output Power 600W
Resonant Load Impedance 3450 Ohms
Intermodulation Distortion Products -33 dB
*Approximate Value
** Measured Data From A Single Tube
End Quote
Better IMD was obtained by lowering the plate voltage under "(Minimum
Distortion Products)" at -38 dB, 500W, and at 2000 Vdc.
Best,
Will
*********** REPLY SEPARATOR ***********
On 6/27/06 at 5:46 AM Tom W8JI wrote:
>> They can be used on up in current, say for pulse circuits
>> and RF heating. The 400 mA is the maximum plate current at
>> single tone for minimum distortion. That's for 600 watts
>> PEP useful power each. That's listed in the tables on page
>> 2 or 3 under a class B RF amp.
>
>Will,
>
>Where did you get the idea 400mA is a "minimum distortion"
>condition?
>
>73 Tom
>
>
>
>
>
>_______________________________________________
>Amps mailing list
>Amps@contesting.com
>http://lists.contesting.com/mailman/listinfo/amps
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|