Universal Impedance Bridge 250 DA
Electro Scientific Industries, Inc. (ESI); Portland, OR
- Country
- United States of America (USA)
- Manufacturer / Brand
- Electro Scientific Industries, Inc. (ESI); Portland, OR
- Year
- 1959 ?
- Category
- Service- or Lab Equipment
- Radiomuseum.org ID
- 309398
ESI bridge eye-tube approaching null
ESI bridge eye-tube at full null
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Tubes
- 3
- Wave bands
- - without
- Power type and voltage
- Alternating Current supply (AC) / 110 Volt
- Loudspeaker
- - - No sound reproduction output.
- Material
- Metal case
- from Radiomuseum.org
- Model: Universal Impedance Bridge 250 DA - Electro Scientific Industries,
- Shape
- Tablemodel without push buttons, Mantel/Midget/Compact up to 14
- Dimensions (WHD)
- 10 x 10 x 9 inch / 254 x 254 x 229 mm
- Notes
-
Unversal Impedance Bridge Model 250 DA. This is a high precision LRC bridge. It uses a DC circuit and a Galvanometer for resistance, and an AC generator/detector circuit for capacitance and inductance. The 6U5 magic eye tube is the null indicator for AC measurements. This unit appears to be from 1963 or later, as the address is on NW Science Park Drive.
- Net weight (2.2 lb = 1 kg)
- 15.2 lb (15 lb 3.2 oz) / 6.901 kg
- Author
- Model page created by Simon Favre. See "Data change" for further contributors.
- Other Models
-
Here you find 8 models, 8 with images and 3 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Electro Scientific Industries, Inc. (ESI); Portland, OR
Collections
The model Universal Impedance Bridge is part of the collections of the following members.