• Paese
• USA (Stati Uniti d'America)

• Produttore / Marca
• General Radio Company; Cambridge (MA)

• Anno
• 1975 ?

• Categoria
• Strumento da laboratorio

• Radiomuseum.org ID
• 257672

• • alternative name: GenRad

Clicca sulla miniatura dello schema per richiederlo come documento gratuito.

• Numero di transistor
• A semiconduttori.

• Semiconduttori

• Gamme d'onda
• - senza

• Tensioni di funzionamento
• Alimentazione a corrente alternata (CA) / 90-127;180-253 at 48-440Hz Volt

• Altoparlante
• - - Nessuna uscita audio.

• Materiali
• Mobile di metallo

• Radiomuseum.org
• Modello: Digital Impedance Meter 1685 - General Radio Company;

• Forma
• Soprammobile basso, con andamento orizzontale (grosse dimensioni).

• Dimensioni (LxAxP)
• 432 x 142 x 413 mm / 17 x 5.6 x 16.3 inch

• Annotazioni

• The 1685 Digital Impedance Meter is an all solid-state instrument that automatically measures series capacitance and inductance at two frequencies, 120Hz and 1 kHz, and measures resistance at DC. These measurements can be made on command or repetitively, with measurement time variable between 0.25 s and 10 s , with results furnished by means of a digital readout display.

  The basic accuracy is 0.1% +2 counts for DC and 1 kHz measurements and 0.5% + 1 count for 120 Hz measurements. For DC and 1 kHz measurements, the full-scale digital readout indication is 19999; for 120 Hz operation it is 1999.

  The decimal points and units are also displayed; the units are displayed on the RANGE switch dial. The range is manually set.

  The meter measures capacitance from .01 pF (one digit) to 20,000 µF, inductance from .01 µH to 2,000 H and resistance from 0.1 mΩ to 20 MΩ.

  For ac measurements, the dissipation factor, D, or quality factor, Q, is also indicated. The value of D or Q is obtained by a manual dial adjustment. However, if this dial is set to the desired D or Q limit, there is an automatic indication if their value is exceeded. An optional limit Comparator (High/Low) can be added to the instrument.

• Peso netto
• 10.2 kg / 22 lb 7.5 oz (22.467 lb)

• Bibliografia
• - - Manufacturers Literature

• Autore
• Modello inviato da Antonio Marra. Utilizzare "Proponi modifica" per inviare ulteriori dati.

• Altri modelli

• In questo link sono elencati 238 modelli, di cui 212 con immagini e 128 con schemi.
  Elenco delle radio e altri apparecchi della General Radio Company; Cambridge (MA)