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TV61 vacuum tube: technical reference
Explore the available information on the TV61 vacuum tube in the EnryLab technical archive.
The TV61 is a Dario–Radiotechnique half-wave vacuum rectifier. Our sources specify a directly heated 4 V, 0.4 A filament and a European four-pin B4 base. In a directly heated structure the filament is also the cathode; rectification results from current flowing towards the anode when it is at the appropriate potential relative to the filament.
The Philips Comparative Pocket Book for Valves, sixth edition of January 1939, lists TV61 on page 32 alongside 1802. On the same page, the neighbouring TV60 instead refers to 1801: the different final digit thus identifies two separate reference entries. V56 is also listed separately with 1802 as its reference, while the booklet preserves the original Dario–Radiotechnique designations.
P. H. Brans's 1950 Vade-Mecum, on page 90, confirms the TV61–1802 correspondence and specifies a 4 V filament on both sides of the table. This is useful for identifying the valve in replacement literature. However, the sources consulted here do not establish a maximum rectified current or a specific anode limit for TV61: these values cannot be inferred from the valve name alone or its association with another type.
Pinout and connections
Base: 4A - Europe 4-Pin B4 (Eu A, E, ) 1914 (Codex=Eo)
Electrical data
Heater
- Heater voltage Vh
- 4 V
- Heater current Ih
- 0.4 A
Datasheet PDF
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EL84 ECC83 12AX7 EL34 6L6GC 300B KT88 GZ34
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