1644-A: Difference between revisions
Jump to navigation
Jump to search
No edit summary |
No edit summary |
||
| Line 12: | Line 12: | ||
* [[Media:GR 1644-A Megohm Bridge 1644-0100-A 1964.pdf|General Radio 1644-A Manual 1644-0100-A 1964]] | * [[Media:GR 1644-A Megohm Bridge 1644-0100-A 1964.pdf|General Radio 1644-A Manual 1644-0100-A 1964]] | ||
}} | }} | ||
The '''General Radio 1644-A Megohm Bridge''' is a Megohm Bridge [[introduced in 1965]] Catalog S and remained available through Catalog78. | The '''General Radio 1644-A Megohm Bridge''' is a Megohm Bridge [[introduced in 1965]] Catalog S and remained available through Catalog78. | ||
The Type 1644-A is a bridge type instrument used for resistance measurements in 9 ranges from 1 kΩ to 1 TΩ. The bridge is a modified | The Type 1644-A is a bridge type instrument used for resistance measurements in 9 ranges from 1 kΩ to 1 TΩ. The bridge is a modified | ||
Revision as of 06:58, 29 February 2024
The General Radio 1644-A Megohm Bridge is a Megohm Bridge introduced in 1965 Catalog S and remained available through Catalog78. The Type 1644-A is a bridge type instrument used for resistance measurements in 9 ranges from 1 kΩ to 1 TΩ. The bridge is a modified Wheatstone bridge design. It contains a built in vacuum tube detector and high voltage power supply. Besides measuring resistors its uses are semiconductor leakage, capacitor resistance and insulation resistance for example. The Type 1644-A replaces the Type 544-B.
Specifications
- Resistance Range: 1 kΩ to 1000 TΩ in ten decade ranges.
- Accuracy: from 1 kΩ to 10 GΩ ±1% Basic accuracy see manual.
- Test Voltages: 10, 20, 50, 100, 200, 500, and 1000 Volts.
- Short-Circuit Current: <15 mA at 10 V to 50 V; <10 mA at 100 to 1000 V.
Links
Photos
-
-
-
-
-
Detector Board and Foil Side of Power Supply
-
Power Supply Board Close-Up
-
Detector Board Close-Up
-
-
-
-
