Television T20
Ultra Electric Ltd.; London
- Produttore / Marca
- Ultra Electric Ltd.; London
- Anno
- 1937–1939
- Categoria
- Televisore (TV) / Monitor
- Radiomuseum.org ID
- 345200
-
- alternative name: Ultra Radio and Television
- Numero di tubi
- 15
- Valvole
- Principio generale
- Supereterodina con stadio RF
- Gamme d'onda
- VHF/UHF (ved. i dettagli nelle note)
- Tensioni di funzionamento
- Rete (CA, universale, CC, o non nota) / 200-250 Volt
- Altoparlante
- -altoparlante presente ma di tipo ignoto.
- Materiali
- Mobile in legno
- Radiomuseum.org
- Modello: Television T20 - Ultra Electric Ltd.; London
- Forma
- Console di qualsiasi tipo
- Annotazioni
-
T20, a low-priced Television Receiver for sound and vision only, with a picture size of 7¾” by 6¼”. Ediswan all-magnetic cathode-ray tube.
The apparatus commences with an RF stage, and then there is a triode-hexode frequency changer followed by two IF stages, after which the path of the signal is split. The sound signal is picked out and passed through another IF stage at 2.6 Mc/s, and thence to a duo-diode output pentode.
The vision signal also goes through another IF valve, the frequency being 6.1 Mc/s, which feeds a low-capacity diode detector. Single-sideband reception is adopted.
This valve is followed by a vision-frequency amplifier having a response characteristic which is substantially flat up to 2.25 Mc /s. Magnetic deflection and focusing are used and the time bases include power pentodes in their output circuits.
Wireless World Aug 20, 1937, Page 171.
- Bibliografia
- Wireless World (The), London (WW, 79) (Aug 20, 1937, Page 171.)
- Autore
- Modello inviato da Gary Cowans. Utilizzare "Proponi modifica" per inviare ulteriori dati.
- Altri modelli
-
In questo link sono elencati 235 modelli, di cui 153 con immagini e 149 con schemi.
Elenco delle radio e altri apparecchi della Ultra Electric Ltd.; London