• Anno
  • 1958–1961
  • Categoria
  • Strumento da laboratorio
  • Radiomuseum.org ID
  • 192993

 Specifiche tecniche

  • Numero di transistor
  • Gamme d'onda
  • - senza
  • Tensioni di funzionamento
  • Alimentazione a corrente alternata (CA)
  • Altoparlante
  • - - Nessuna uscita audio.
  • Materiali
  • Pelle / stoffa / plastica ma con altro materiale sottostante
  • Radiomuseum.org
  • Modello: Dynamic Tube Tester 648-R - Jackson The Electrical
  • Forma
  • Soprammobile con qualsiasi forma (non saputo).
  • Dimensioni (LxAxP)
  • 415 x 170 x 370 mm / 16.3 x 6.7 x 14.6 inch
  • Annotazioni
  • 648R replaced 648A in October of 1958. Changes are; removal of large 7 pin socket, pilot light and noise test, 1S5 tube is replaced with 1N51 diode. On outside changes are only cosmetical, sockets (9 pcs) are moved to socket bay (for later easy upgrade) and roll chart is moved to separate easy remouvable compartment above the tester.
    All 648 series tube testers share same operation principle (advanced emission test which applys different voltages to different electrodes during test) and same test settings, tubes that measure below 70% and above 130% should be discarded. Similar to other 648 series tube testers circuit is operated with two power transformers (separate for filament and anode), and schematic is stampled on the bottom of the case.
    Absence of grid emission (gas test) is only drawback of this tester. 648R was replaced with 648S in July 1961.
  • Peso netto
  • 8 kg / 17 lb 9.9 oz (17.621 lb)
  • Prezzo nel primo anno
  • 130.00 $
  • Fonte dei dati
  • - - Data from my own collection
  • Autore
  • Modello inviato da Sinisa Trlin. Utilizzare "Proponi modifica" per inviare ulteriori dati.

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Il modello Dynamic Tube Tester fa parte delle collezioni dei seguenti membri.

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