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VALVES
LOW NOISE
VHF TRIODE
A2599
ISSUE 2
The A2599 is a low noise v.h.f. triode for grounded-cathode use. It is a commercial version of the CV5242.
BASE CONNECTIONS h
h
k k g
AND VALVE DIMENSIONS
k Base: B9A
k Bulb: Tubular. Max. overall length:
g Max. seated length: Max. diameter:
a
56mm. 49mm. 22·2mm.
Viewed from underside of base.
HEATER
6·3 0·3 (approx)
V A
MAXIMUM RATINGS (Absolute)
Va pa
Ik
+Vs
Vh-k(pk) Tbulb
250 2·5 20
20 100 200
CAPACITANCES (Measured on a cold screened valve)
Cg-all. less a: 3·5pF;
Ca-all. less g: 0'7pF;
V W rnA V V °C
Cg-a: 1·lpF.
CHARACTERISTICS
Va i,
Vg
gm
[.1
*Cin(w) *nn(w)
130 16 -1 (approx) 15 60 6 (approx) 30 (approx)
* Measured hot at 45Mc/s with anode decoupled to cathode.
V rnA
V mA/V
pF kfl
-.,------T-H-E---M--O--V-A--L-V-E-C--O-.
A2599 Datasheet
