1604-B: Difference between revisions
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(Created page with "Type '''1604-B Comparison Bridge'''. ==Specifications== ==Links== ==Photos== <gallery> </gallery> Category:Impedance measurement") |
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{{GR Product | |||
|model=1604-B | |||
|codes=FATTY | |||
|class=impedance measurement | |||
|summary=Comparison bridge | |||
|image=GR 1604-B Front.jpg | |||
|caption=General Radio 1604-B Comparison Bridge | |||
|series= | |||
|introduced=1954 | |||
|discontinued=1956 | |||
|designers= | |||
|manuals= | |||
* [[Media:GR 1604-B Impedance Comparison Bridge 790-B 1956.pdf|General Radio 1604-B Impedance Comparison Bridge 790-B 1956]] | |||
{{Catalog History}} | |||
}} | |||
The {{Title|General Radio 1604-B Comparison Bridge}} was introduced in {{Catalog N}} and remained available through {{Catalog O}}. | |||
It was designed for sorting, adjusting and comparing two devices at three different frequencies. | |||
Impedance difference can be measured in two ranges, 5% or 20%, selected by a front panel switch, using a built-in generator and detector equipped with a 2AP1 CRT. | |||
Balance is achieved when the vertical deflection is at a minimum. | |||
Dissipation factor difference is read directly from the dial in one range. | |||
The main change from the [[1604-A]] is the addition of a 400 Hz test frequency. | |||
==Specifications== | ==Specifications== | ||
* '''Deviation Range:''' Impedance difference, ±5% and ±20%, switched. Dissipation factor difference, ±0.006 at 400 Hz, ±0.015 at 1 kHz, ±0.075 at 5 kHz | |||
* '''Test Frequency:''' 400 Hz, 1 kHz, or 5 kHz within ±3% | |||
* '''Voltage Applied to Unknown:''' Approximately 1 V for impedances above 500 Ω, decreasing for lower values of impedance | |||
==Links== | ==Links== | ||
* [[Media:GRwiki Exp 1604-A 12_1952.pdf|Experimenter December 1952 describing Type 1604-A]] | |||
* [[Media:GRwiki Exp 1604-B 02_1954.pdf|Experimenter February 1954 describing Type 1604-B]] | |||
* Predecessor: [[1604-A]] (1952) | |||
* Successor: [[1605-A|General Radio 1605-A Impedance Comparator]] (1956) | |||
==Photos== | ==Photos== | ||
<gallery> | <gallery> | ||
GR 1604-B Front.jpg | |||
GR 1604-B Side.jpg | |||
GR 1604-B Bottom Inside.jpg | |||
GR 1604-B Bottom Inside B.jpg | |||
GR 1604-B Inside wo_shield.jpg | |||
GR 1604-B Top Inside B.jpg | |||
GR 1604-B Top Inside CRT 2AP1.jpg | |||
</gallery> | </gallery> | ||
[[Category:Impedance measurement]] | [[Category:Impedance measurement]] | ||
Latest revision as of 00:11, 25 April 2024
The General Radio 1604-B Comparison Bridge was introduced in Catalog N (1954) and remained available through Catalog O (1956).
It was designed for sorting, adjusting and comparing two devices at three different frequencies.
Impedance difference can be measured in two ranges, 5% or 20%, selected by a front panel switch, using a built-in generator and detector equipped with a 2AP1 CRT. Balance is achieved when the vertical deflection is at a minimum.
Dissipation factor difference is read directly from the dial in one range. The main change from the 1604-A is the addition of a 400 Hz test frequency.
Specifications
- Deviation Range: Impedance difference, ±5% and ±20%, switched. Dissipation factor difference, ±0.006 at 400 Hz, ±0.015 at 1 kHz, ±0.075 at 5 kHz
- Test Frequency: 400 Hz, 1 kHz, or 5 kHz within ±3%
- Voltage Applied to Unknown: Approximately 1 V for impedances above 500 Ω, decreasing for lower values of impedance
Links
- Experimenter December 1952 describing Type 1604-A
- Experimenter February 1954 describing Type 1604-B
- Predecessor: 1604-A (1952)
- Successor: General Radio 1605-A Impedance Comparator (1956)
