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The QS75/60 voltage stabiliser from Marconi probably dates from the late 1930s when this base design and all glass construction became available.
The tube ignites at 117 Volts and the output current ranges from 5 - 60 mA. Over this range the voltage regulation is 5 Volts.
The wide glass tube envelope is 27 mm in diameter and, excluding the B8B base pins, is 64 mm tall.
Pin Connections
B8B
1
2
3
4
5
6
7
8
a
a
a
k
k
k
k
k
Absolute Maximum Operating Conditions
Stabiliser
Va
mAa
75
60
This exhibit was last updated on 21 January 2003
The tube ignites at 117 Volts and the output current ranges from 5 - 60 mA. Over this range the voltage regulation is 5 Volts.
The wide glass tube envelope is 27 mm in diameter and, excluding the B8B base pins, is 64 mm tall.
Pin Connections
B8B
1
2
3
4
5
6
7
8
a
a
a
k
k
k
k
k
Absolute Maximum Operating Conditions
Stabiliser
Va
mAa
75
60
This exhibit was last updated on 21 January 2003
Pin Connections
B8B
1
2
3
4
5
6
7
8
a
a
a
k
k
k
k
k
Absolute Maximum Operating Conditions
Stabiliser
Va
mAa
75
60
This exhibit was last updated on 21 January 2003
B8B |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
a |
a |
a |
k |
k |
k |
k |
k |
Absolute Maximum Operating Conditions
Stabiliser
Va
mAa
75
60
This exhibit was last updated on 21 January 2003
Stabiliser |
Va |
mAa |
75 |
60 |
This exhibit was last updated on 21 January 2003
This exhibit was last updated on 21 January 2003 |