1603-A: Difference between revisions
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{{GR Product | |||
The | |model=1603-A | ||
|codes=CATER,1603-9701 | |||
|class=impedance measurement | |||
|summary=Z–Y impedance bridge | |||
|image=GR 1603-A Front.jpg | |||
|caption=General Radio 1603-A Z-Y Bridge | |||
|series= | |||
|introduced=1956 | |||
|discontinued=1968 | |||
|designers= | |||
|manuals= | |||
* [[Media:GR 1603A 1603-0100-F 08_1968.pdf|General Radio 1603-A Z-Y Bridge Manual 1603-0100-F (1968)]] | |||
{{Catalog History}} | |||
}} | |||
The {{Title|General Radio 1603-A}} is a Z-Y impedance bridge introduced in {{Catalog O}} that remained available through {{Catalog T}}. | |||
Known as ''the bridge that always has an answer'', its claim to fame is that it can be balanced for any impedance connected to its terminals. The 1603-A is accurate at audio frequencies from 20 Hz to 20 kHz. It requires an audio oscillator and detector for operation. | |||
The 1603-A directly measures the quadrature components of a complex impedance Z = R + jX, or a complex admittance Y = G + jB. The unknown Z or Y may lie in any of the four quadrants of the complex plane, since this bridge can measure both positive and negative values of R and G as well as X and B. | |||
==Specifications== | ==Specifications== | ||
* '''Frequency Range:''' 20 Hz to 20 kHz | * '''Frequency Range:''' 20 Hz to 20 kHz | ||
* '''Impedance and Admittance:''' -infinity to +infinity | * '''Impedance and Admittance:''' -infinity to +infinity | ||
* ''' | * '''Accuracy (with unknown grounded):''' 1% (see manual) | ||
==Links== | ==Links== | ||
* [[Media:GRwiki Exp 1603-A 07_1955.pdf|Experimenter describing 1603-A | * [[Media:GRwiki Exp 1603-A 07_1955.pdf|GR Experimenter July 1955 describing the 1603-A]] | ||
* [https://www.pa4tim.nl/?p=4456 GR 1603-A @ Fred PA4TIM's page] | |||
* [https://www.youtube.com/watch?v=gl6FEzfTWgQ Genrad 1603 used to measure audio transformers] by ElPaso TubeAmps @ YouTube | |||
==Photos== | ==Photos== | ||
Latest revision as of 05:09, 9 July 2024
The General Radio 1603-A is a Z-Y impedance bridge introduced in Catalog O (1956) that remained available through Catalog T (1968).
Known as the bridge that always has an answer, its claim to fame is that it can be balanced for any impedance connected to its terminals. The 1603-A is accurate at audio frequencies from 20 Hz to 20 kHz. It requires an audio oscillator and detector for operation.
The 1603-A directly measures the quadrature components of a complex impedance Z = R + jX, or a complex admittance Y = G + jB. The unknown Z or Y may lie in any of the four quadrants of the complex plane, since this bridge can measure both positive and negative values of R and G as well as X and B.
Specifications
- Frequency Range: 20 Hz to 20 kHz
- Impedance and Admittance: -infinity to +infinity
- Accuracy (with unknown grounded): 1% (see manual)
Links
- GR Experimenter July 1955 describing the 1603-A
- GR 1603-A @ Fred PA4TIM's page
- Genrad 1603 used to measure audio transformers by ElPaso TubeAmps @ YouTube
