PU7A8013_power_supply_chokes_web_500px

Very low current chokes, normally used as grid chokes

PhotoCurrentTypeInductanceWinding resistanceWeightTypical use
0.8 mALL1670 5404.8k88 gGrid choke

 

Low current chokes, most often used as anode chokes

PhotoApplication
current
(mA)
Type

Configuration
(serial or parallel)
Inductance
(H)
Capacity
(I * L)
(Vs)

Winding resistance
(ohm)
Weight
(kg)
Typical use
5 – 40LL1667 Serial800 – 1004.052.4k0.75High impedance anode choke
10 – 60 LL1668 Serial250 – 402.5 6800.75Anode choke
10 – 100LL2743 Serial440 – 444.54001.35Anode choke

 

Medium current chokes, most often used in anode voltage power supplies

Photo
Application
current
(mA)
TypeConfiguration
(serial or parallel)
Inductance
(H)
Capacity
(I * L)
(Vs)
Winding resistance
(ohm)
Weight
(kg)
Typical use

150 – 400

300 – 800
LL1638

LL1638
Serial

Parallel
10 – 4

2.5 – 1
1.5

0.8
36

9
1.35

1.35
Power supply

Power supply
100 – 200

200 – 400
LL1673

LL1673
Serial

Parallel
20 – 10

5 – 2.5
2

1
60

15
1.35

1.35
Power supply

Power supply
100 – 200

200 – 400
LL1685

LL1685
Serial

Parallel
17 – 9

4 – 2
1.7

0.8
130

32
0.75

0.75
Power supply

Power supply

100 – 300

200 – 600
LL2742

LL2742
Serial

Parallel
42 – 14

10 – 3
4.2

2
160

40
1.35

1.35
Power supply

Power supply
500 – 1000

1000 – 2000
LL2771

LL2771
Serial

Parallel
6 – 3

1.5 – 0.7
3

1.5
11

3
4.9

4.9
Power supply

Power supply

 

High current chokes, most often used in filament current supplies or for solid state applications

Photo
Application
current
(A)
TypeConfiguration
(serial or parallel)
Inductance
(mH)
Capacity
(I * L)
(Vs)
Winding resistance
(ohm)
Weight
(kg)
Typical use
1 – 2

2 – 4
LL1694

LL1694
Serial

Parallel
240 – 120

60 – 30
0.24

0.12
1.8

0.45
0.83

0.83
Filament current supply

Filament current supply
1 – 2

2 – 4
LL2733

LL2733
Serial

Parallel
700 – 350

170 – 80
0.7

0.35
3.4

0.9
1.35

1.35
Filament current supply

Filament current supply
0.5 – 1

1 – 2
LL2751

LL2751
Serial

Parallel
200 – 100

50 – 25
0.11

0.05
1

0.25
0.44

0.44
Small tube filament current

Small tube filament current
1 – 3

2 – 6
LL2772

LL2772
Serial

Parallel
250 – 80

60 – 20
0.24

0.12
0.7

0.2
1.35

1.35
Power supply (low voltage)

Power supply (low voltage)
2 – 5

4 – 10
LL2773

LL2773
Serial

Parallel
160 – 65

40 – 16
0.33

0.15
0.44

0.11
2.5

2.5
Power supply (low voltage)

Power supply (low voltage)