Vacuum Tubes

Vacuum tubes are a type glass tube device, which has had its gas removed, creating a vacuum space. It is comprised of electrodes that are designed to control electron flow between the electrodes sealed inside the vacuum tubes. Unlike transistors, these tubes can be easily replaced by the user.

How do vacuum tubes work?

Vacuum tubes utilise a principal called thermionic emission in which a metal is heated allowing the electrons to be loosened up. This causes the positively charged anodes to attract the negative electrons emitted by the cathodes by causing an electric current to flow into the anode and out of the cathode.

An advantage of vacuum tubes is that they have a wider dynamic range than transistors circuits. This is mainly attributed to their higher operating voltages and overload tolerances.

Types of vacuum tubes

There are a variety of vacuum tubes available such as;

  • Diodes - One of the simplest forms of vacuums tubes available. The tube comprised of two terminals that include both an anode and a cathode.
  • Triode - Triode vacuum tubes have electric current flow generates a high potential from the anode to the cathode's ground potential.
  • Tetrode - This type of vacuum tubes composition includes a fourth terminal that is also known as the screen that is between the anode and the grid. This screen is designed to reduce the capacitance emitted.
  • Pentode - This type of vacuum has a fifth electrode known as a suppressor that is designed to prevent the emission of electrons caused by stimulation of secondary electrons from the anodes.

Applications of Vacuum tubes

Vacuum tubes have a wide range of application in electronic type devices such as;

  • Resistance coupled voltage amplifiers
  • High-end audio equipment
  • Phase inverters

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Description Prix Heater Current Heater Voltage Voltage Output Anode Power Base Type For Use With Mounting Type Pin Count Dimensions Body Length Diameter Maximum Operating Temperature Minimum Operating Temperature Overall Length
N° de stock RS 171-1624
MarqueRS PRO
6,615 €
Each (In a Box of 100)
Unité
0.15 A, 0.3A 12.6 V, 6.3V 330V 1W B9A - - 9 22.5 (Dia.) x 57mm 50mm 22.5mm - - 57mm
N° de stock RS 678-4114
MarqueRS PRO
7,28 €
Each
Unité
0.15 A, 0.3A 12.6 V, 6.3V 330V 1W B9A - - 9 22.5 (Dia.) x 57mm 50mm 22.5mm - - 57mm
N° de stock RS 171-1621
MarqueRS PRO
7,865 €
Each (In a Box of 100)
Unité
0.15 A, 0.3A 12.6 V, 6.3V 300V 2.75W B9A - - 9 22.5 (Dia.) x 57mm 50mm 22.5mm - - 57mm
N° de stock RS 678-4094
MarqueRS PRO
1,50 €
Each (In a Pack of 2)
Unité
- - - - B9A 12AU7, 12AX7, 6DJ8, 6L13, B329, B339, CV491, CV492, E88CC, ECC82, ECC83 - - - - - - - -
N° de stock RS 678-4105
MarqueRS PRO
8,65 €
Each
Unité
0.15 A, 0.3A 12.6 V, 6.3V 300V 2.75W B9A - - 9 22.5 (Dia.) x 57mm 50mm 22.5mm - - 57mm
N° de stock RS 171-1620
MarqueRS PRO
7,865 €
Each (In a Box of 100)
Unité
0.15 A, 0.3A 12.6 V, 6.3V 300V 2.5W B9A - - 9 22.5 (Dia.) x 57mm 50mm 22.5mm - - 57mm
N° de stock RS 678-4101
MarqueRS PRO
8,65 €
Each
Unité
0.15 A, 0.3A 12.6 V, 6.3V 300V 2.5W B9A - - 9 22.5 (Dia.) x 57mm 50mm 22.5mm - - 57mm
N° de stock RS 678-4120
MarqueRS PRO
9,65 €
Each
Unité
0.76A 6.3V 500V 12W B9A - - 9 22 (Dia.) x 77.8mm 71.4mm 22mm - - 77.8mm
N° de stock RS 146-0791
MarqueRS PRO
8,769 €
Each (In a Box of 100)
Unité
0.76A 6.3V 500V 12W B9A - - 9 22 (Dia.) x 77.8mm 71.4mm 22mm - - 77.8mm
N° de stock RS 678-4111
MarqueRS PRO
55,32 €
1 Set
jeu(x)
1.5A 6.3V 800V 25W Octal - - 8 36.5 (Dia.) x 115mm 100mm 36.5mm - - 115mm
N° de stock RS 678-4117
MarqueRS PRO
13,21 €
1 Set(s)
Unité
1.5A 6.3V 800V 25W Octal - - 8 36.5 (Dia.) x 115mm 100mm 36.5mm - - 115mm
N° de stock RS 678-4098
MarqueRS PRO
2,365 €
Each (In a Pack of 2)
Unité
- - - - Octal 6550, 6CA7, 6P3P, 8-pin vacuum tubes such as EL34, KT88 - - - - - - - -
N° de stock RS 678-4136
MarqueRS PRO
84,41 €
1 Set
jeu(x)
1.6A 6.3V 800V 42W Octal - - 8 52 (Dia.) x 125mm 110mm 52mm - - 125mm
N° de stock RS 678-4123
MarqueRS PRO
43,24 €
Each
Unité
1.6A 6.3V 800V 42W Octal - - 8 52 (Dia.) x 125mm 110mm 52mm - - 125mm
N° de stock RS 171-1625
MarqueRS PRO
39,308 €
Each (In a Box of 20)
Unité
1.6A 6.3V 800V 42W Octal - - 8 52 (Dia.) x 125mm 110mm 52mm - - 125mm
N° de stock RS 678-4127
MarqueRS PRO
27,69 €
1 Set
jeu(x)
1.5A 6.3V 800V 25W Octal - - 8 36.5 (Dia.) x 115mm 100mm 36.5mm - - 115mm
N° de stock RS 678-4139
MarqueRS PRO
160,01 €
1 Set
jeu(x)
1.6A 6.3V 800V 42W Octal - - 8 52 (Dia.) x 125mm 110mm 52mm - - 125mm
N° de stock RS 171-1623
MarqueRS PRO
10,50 €
Each (In a Box of 50)
Unité
0.9A 6.3V 400V 23W Octal - - 8 38.5 (Dia.) x 115mm 98mm 38.5mm - - 115mm
N° de stock RS 678-4108
MarqueRS PRO
11,55 €
Each
Unité
0.9A 6.3V 400V 23W Octal - - 8 38.5 (Dia.) x 115mm 98mm 38.5mm - - 115mm
N° de stock RS 144-8943
Référence fabricantNutube 6P1
MarqueKorg Nutube
39,216 €
Each (In a Box of 60)
Unité
- - 80V - Parallel - Through Hole 20 45 x 16 x 5.6mm 45mm - +85 °C -40 °C 45mm