Valves

Title

Valves

Description

The museum has an extensive collection of valves.

Items in the Valves Collection

Cossor Radio Valve OM-10
Iheater 0.2A Vheater 6.3V Ianode 2.7mA

Twin Tetrode Type C180 Valve
Twin Tetrode Type C180 Base: 7 pin, Chelmsford, England, 1954. Parallel Vinput 6.3 volts / Iinput 1.6 Ampere Transconductance = 3.5 A / V (Ia=30mA) Amplifier and Oscillator Max Va = 750v Ia = 90mA Amplifier Only Max Va = 600v Ia = 75mA

Eimac 250TH High-MU Triode
Eimac 250TH High-MU Triode. Base: Special 4- pin, USA, 1953. Filament: Thoriated tungsten / Vf 5.0 volts / If 10.5 Ampere / Direct / Transconductance 5600 umhos / (Ib = 300mA, Eb = 3000) Typically RF: Vp 4000 volts Ip 350mA Ig 93mA Plate dissipation…

Eimac 250TH High-MU Triode
Eimac 250TH High-MU Triode. Base: 4 pin, No. 5001B, USA, 1951. Filament: Thoriated tungsten / Vf 5.0 volts / If 10.5 Ampere / Direct / Transconductance 6650 umhos / (Ib = 300mA, Eb = 3000, er = -20) Typically RF: Vp 4000 volts, Ip 350mA, Ic…

Sylvania Radio-Tube 1A6 box
Sylvania set-tested radio tube 1A6 box for Sylvania set-tested radio tube or valve.

Mullard EF37A Radio Valve
Mullard EF37A radio valve in a Mullard EF39 valve box. Iheater      200mA Vheater      63V Vanode max 300V

Mullard Data Book 1959/60
Mullard Data Book 1959/60.

Mullard PY33 Half-Wave Rectifier Tube
Half-wave rectifier tube. Iheater 300mA Vheater 29V PIVmax 700V Replaced the PY32. Has higher peak current and surge ratings permitting better smoothing, by enabling higher values of filter capacitance." Taken from…

Mullard EBC41 Radio Valve
Mullard EBC41 radio valve 8 pins Double Diode-Triode PIVmax 350V (diode) Vanode_max 300V (triode)

Radio Haltron Tube 25Z5 Box
Box for Radio Haltron Tube 25Z5