Fabricantes
- Daetron
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- dbx
- Degen
- Dell
- DeLonghi
- Delta
- Delta Elektronika BV
- Denon
- Dentron
- Dick Smith
- Digitech Studio
- Dirt Devil
- Dixie Narco
- Dolby
- Dolch Logic Instruments
- Drake
- Dranetz Engineering Laboratories Inc.
- Dr. K. Witmer Elektronik AG
- Dual
- Dumont Oscilloscope Laboratories Inc.
- Dymar Electronics Limited
- Dynamic Sciences International Inc
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SPECIFICATIONS General Power source. . . . . . . . . . . . . . . . . . . 13.2 V(10.5V—16.0V allowable) Electrode dark current . . . . . . . . . . .