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1605-A: Difference between revisions
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The '''General Radio 1605-A Impedance Comparator''' was introduced in 1956 Catalog O and remained available through Catalog T 1968. | The '''General Radio 1605-A Impedance Comparator''' was introduced in 1956 Catalog O and remained available through Catalog T 1968. | ||
The Type 1605-A can be used to compare pairs of components for magnitude and phase difference. It displays the results on separate meters (magnitude, phase). | The Type 1605-A can be used to compare pairs of components for magnitude and phase difference. It displays the results on separate meters (magnitude, phase). | ||
adjusting coils to a standard. | Using the built-in guard circuit during measurement, the unknown can be remotely located during measurement. | ||
Some other applications include checking ganged potentiometers or variable capacitors for tracking, checking balances of transformer windings, or adjusting coils to a standard. | |||
==Specifications== | ==Specifications== | ||
* '''Impedance Ranges:''' | * '''Impedance Ranges:''' | ||
** Resistance: 2 Ω to 20 MΩ | |||
** Capacitance: 40 pF to 500 μF | |||
** Inductance: 20 μh to 10,000 H | |||
* '''Internal Oscillator Frequencies:''' 100 Hz, 1 kHz, 10 kHz, 100 kHz | * '''Internal Oscillator Frequencies:''' 100 Hz, 1 kHz, 10 kHz, 100 kHz | ||
* '''Meter Ranges:''' | * '''Meter Ranges:''' | ||
** Impedance Magnitude Difference: ±0.3%, ± 1%, ±3%, ± 10% full scale | |||
** Phase Angle Difference: ±0.003, ±0.01, ±0.03, ± 0.1 radian full scale | |||
* '''Voltage Across Standard and Unknown:''' approx. 0.15 V | * '''Voltage Across Standard and Unknown:''' approx. 0.15 V | ||
==Links== | ==Links== | ||
* [[Media:GR Exp 1605-A 04_1956.pdf|Experimenter describing Type 1605-A | * [[Media:GR Exp 1605-A 04_1956.pdf|Experimenter April 1956 describing Type 1605-A]] | ||
==Photos== | ==Photos== | ||