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874-VR: Difference between revisions
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|series=GR-874 | |series=GR-874 | ||
|introduced=1951 | |introduced=1951 | ||
|discontinued= | |discontinued=1973 | ||
|designers= | |designers= | ||
|manuals= | |manuals= | ||
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}} | }} | ||
The {{Title|General Radio 874-VR}} is a "voltmeter rectifier" with two [[GR-874 connector]]s for the signal, and another GR-874 connector for the rectified output. | The {{Title|General Radio 874-VR}} is a "voltmeter rectifier" with two [[GR-874 connector]]s for the signal, and another GR-874 connector for the rectified output. | ||
It was introduced in {{Catalog M}} and remained available through {{Catalog 1973}}, after which only the [[874-VRL]] version with locking connectors remained in the catalog. | |||
The 874-VR is used in frequency-response measurements with a [[1750-A|1750-A Sweep Drive]] and [[1263-C|1263-C Amplitude Regulating Power Supply]]. | |||
An [[874-VI|874-VI Voltmeter Indicator]] can be used for calibrated measurements from 0.1 to 2 V. | An [[874-VI|874-VI Voltmeter Indicator]] can be used for calibrated measurements from 0.1 to 2 V. | ||
It contains a 1N23B diode and a mica capacitor. | It contains a 1N23B diode and a mica capacitor. | ||
The [[874-VQ]] is similar to the 874-VR, but omits the 874-VR's 50 Ω series resistor, and includes matching elements to compensate for the discontinuity caused by the diode capacitance. | The [[874-VQ]] is similar to the 874-VR, but omits the 874-VR's 50 Ω series resistor, and includes matching elements to compensate for the discontinuity caused by the diode capacitance. | ||