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SPEC SHEET ON 2SC2879
- Thread starter TonyV225
- Start date
B
BOOTY MONSTER
Guest
here ya go . all power ratings are PEP . it rated at 100 watts pep @ 28 MHz.
2SC2879 Datasheet pdf - TRANSISTOR SILICON NPN EPITAXIAL PLANAR TYPE 2~30MHz SSB LINEAR POWER AMPLIFIER APPLICATIONS (LOW SUPPLY VOLTAGE USE) - TOSHIBA
page 2 : input power , 6 watts typical 10 watts max
page 1 : maxium collector power dissipation 250 watts .
look at the graphs on page 3 for the power input to output ratios .
after 8 or 10 watts it starts leveling off , compression is setting in . can still do more watts though .
the intermodulated graph shows how distortion is related to input .
its at its lowest at 60 watts and starts rising from there .
does anyone think its get cleaner when you go beyond 100 watts ?
this is what Toshiba says . they designed and manufacture it .
i guess the folks claiming 200 , 300 and 400 watts out of them know something the folks at Toshiba doesnt .
i know power meters are broad banded devices and dont know what frequencys/harmonics are showing up as power on those meters .
2SC2879 Datasheet pdf - TRANSISTOR SILICON NPN EPITAXIAL PLANAR TYPE 2~30MHz SSB LINEAR POWER AMPLIFIER APPLICATIONS (LOW SUPPLY VOLTAGE USE) - TOSHIBA
page 2 : input power , 6 watts typical 10 watts max
page 1 : maxium collector power dissipation 250 watts .
look at the graphs on page 3 for the power input to output ratios .
after 8 or 10 watts it starts leveling off , compression is setting in . can still do more watts though .
the intermodulated graph shows how distortion is related to input .
its at its lowest at 60 watts and starts rising from there .
does anyone think its get cleaner when you go beyond 100 watts ?
this is what Toshiba says . they designed and manufacture it .
i guess the folks claiming 200 , 300 and 400 watts out of them know something the folks at Toshiba doesnt .
i know power meters are broad banded devices and dont know what frequencys/harmonics are showing up as power on those meters .
B
BOOTY MONSTER
Guest
youre welcome . 
you will notice the the (power gain) of the 2SC2879 listed as Gp=13dB. at that figure exactly 5W IN
is equal to exactly 100W OUT. if you'll check the Power out vs. Power in (Po - Pi) graph you see that
at just under 5W IN produces 100W OUT. the device modelled in the graph has just slightly more than
13dB. of gain but the two correlate pretty closely. you'll also notice in the graph that both input and
output power levels are measured in PEP.
Toshiba 2SC2879
is equal to exactly 100W OUT. if you'll check the Power out vs. Power in (Po - Pi) graph you see that
at just under 5W IN produces 100W OUT. the device modelled in the graph has just slightly more than
13dB. of gain but the two correlate pretty closely. you'll also notice in the graph that both input and
output power levels are measured in PEP.
Toshiba 2SC2879
Last edited:
Is this the same definition of peak that the FCC uses where you multiply one over root 2 by the voltage, then square it, and then divide by the circuit load?
V^2/2R
Or is it the instantaneous peak voltage squared divided by the circuit load?
V^2/R
How does the true power or reactive power play into it?
V^2/2R
Or is it the instantaneous peak voltage squared divided by the circuit load?
V^2/R
How does the true power or reactive power play into it?