D. Schofield 
T T 7 Tar nramea T Teareneal 
1.3 >I 
° 50 V 
1.1 a 400V | 
n 
8 & 1350V 
=x 
Z9 4 
4 
= 
= 
=7 | 
uu 
oO 
= 
&.5 | 
c) 
2 
g 
Oo 3 a 4 Fig. 1.10. Conductance vs 
Me frequency for various ex- 
citing voltages. 
all 
— lL -__s! _L gered 
5 6 7 8 9 10 Th 12 13 
FREQUENCY KC/S 
T T Vv T T T 
{0 
N 
= 
WATTS /CM@ OF RADIATING FACE °o 
100 18 8 
° 
oS r 
& 5 
2 80 | 6 
Ww 4 
: : 
& 60 449 
WwW 
ps 
z 
Fig. 1.11. Power output and 40 7 25 
efficiency vs input power. EFFICIENCY a 
[o} -4 8 1.2 1.6 2.0 2.4 
INPUT POWER (KW) 
TABLE 3. Ill 
Driving voltage rms volts 
Quantity 
Resonant frequency, f 9 : 
Mechanical Q 5.5 
Coupling factor 0,22 
Clamped capacity 0.072 
Clamped resistance ohms 12,500 11,200 10,000 
Motional capacity, K put 2,680 3,050 3,700 
Motional inductance, N mH 107.1 96.5 81.0 
Motional resistance, Sy ohms 1,150 970 850 
Radiation resistance, Sy ohms 7125 573 430 
Internal loss resistance, s, ohms 425 397 420 
Projector sensitivity at 3 ft pbar/yv 332 320 322 
Over-all conversion efficiency, neg To 59 54 47 
Motional to acoustic conversion 
efficiency, 7 ma To 63 59 51 
