30PL12

Beam-power television line-output valve designed for horizontal-deflection service, handling large pulse voltages and currents in series-heater receiver circuits.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: B9A
Socket code: B9A
Base pins: 9
Nominal heater: 16 V / 300 mA

Description

Triode output beam-tetrode for television AF amplification, time-base oscillation, audio output, or field output. The supplied English-language Mazda/Thorn-AEI datasheet was used for the technical and descriptive extraction.

Socket description

Small-button Noval 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: B9A
Socket code: B9A
Base pins: 9
Nominal heater voltage: 16 V
Nominal heater current: 300 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

B9A - Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

2 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances

Transconductance: 0.0025 S
Amplification factor: 70
Max plate voltage: 250 V
Max plate dissipation: 1 W

Published ratings and characteristics promoted from the approved English source.

Section 2

Beam Power

X-ray radiationInterelectrode capacitances

Transconductance: 0.0064 S
Amplification factor: 9.5
Max plate voltage: 250 V
Max screen voltage: 250 V
Max plate dissipation: 7 W
Max screen dissipation: 1.8 W

Published ratings and characteristics promoted from the approved English source.

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

1973 Mazda Valves Binder 2

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Heater Current ih
3 A
Heater Voltage Vh
16 V
Maximum Screen Grid Dissipation pg2(max) —
1.8 W
Maximum Anode Supply Voltage (1a=0) Va(b)max 550
550 V
Maximum Anode Voltage Va(max) 250
250 V
Maximum Screen Grid Supply Voltage (ig2=0) Vg2(b)max —
550 V
Maximum Screen Grid Voltage Vg2(max) —
250 V
Maximum Mean Cathode Current ik(av)max 15
50 mA
* Maximum pulse duration 4 per cent, of one cycle with a maximum of
800 µs
t Maximum pulse duration
200 µs
Grid Triode to Heater Cgt_h 0 018 0 031 0
42 pF
Grid 1 to Heater cg1_h 024 038
71 pF

Characteristic

For Va ~250V 10
70 W
For Va >250V —
50 W
For speech and music —
32 W
Pulse Negative —
500 V
Tetrode Input Cin(q) 93 96
107 pF
Tetrode 'Output Cout(q) 90 93
104 pF
Tetrode Anode to Grid 1 caq_gi 035 0.37
38 pF
Triode Input C;n(t) 30 32
4.1 pF
Triode Output Cout(t) 43 45
54 pF
Grid Triode to Anode Triode Cgt~ t 42 43
44 pF
Anode Tetrode to Anode Triode Caq_at 0.15 0.18
0.19 pF
Grid 1 to Grid Triode Cg1_gt 0 011 0 030 0
63 pF
Grid 1 to Anode Triode Cg1_at 0 017 0 023 0
28 pF
Grid Triode to Anode Tetrode Cgt_aq 0 014 0 020 0
22 pF
Anode Voltage Va 100
200 V
Screen Grid Voltage Vg2
200 V
Anode Current Ia 3.5
35 mA
Screen Grid Current Ig2 —
7 mA
Control Grid Voltage Vg1 0 —
16 V
Mutual Conductance gm 2.5
6.4 mA
Anode Voltage Va 170
200 V
Screen Grid Voltage Vg2 170
200 V
Grid Bias Voltage Vg —11.5 —
16 V
Quiescent Anode Current la(o) 41
35 mA
Quiescent Screen Grid Current Ig2(o) 8
7 mA
Power Output for 10 per cent, total distortion Pout 3.3
3.5 W
Input Swing Voltage (R.M.S.) Vin(r.m.s.) 6
6.6 V
Input Swing for 50mW output (R.M.S.) 0.59
0.6 V
Anode Voltage Va 50
50 V
Screen Grid Voltage Vg2 170
170 V
Anode Current I, 135
85 mA
Ia,Ig2/Va (V52
100 V
■■■■■■■■■u■■■■ O O
5 V
■■■■■■~■■■■ ■ /I■■Il=■■'L■■II■u/I■■I -2
5 V