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783-A: Difference between revisions
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{{GR Product | |||
The '''General Radio 783A''' is an Output-Power Meter [[introduced in 1944]] | |model=783-A | ||
|class=power measurement | |||
|summary=output-power meter | |||
|image=GR 783-A Front.jpg | |||
|caption=General Radio 783A Output-Power Meter | |||
|series= | |||
|introduced=1944 | |||
|discontinued=1961 | |||
|designers= | |||
|manuals= | |||
* [[Media:GR 783A Output-Power Meter 548 1960.pdf|General Radio 783A Output-Power Meter Manual 548F (1967)]] (OCRed) | |||
}} | |||
The '''General Radio 783A''' is an Output-Power Meter [[introduced in 1944|introduced in 1944 Catalog K3]]. It remained available through Catalog Q 1961. | |||
The 783-A is acts as an adjustable load impedance, with a voltmeter calibrated directly in watts dissipated in the load. | The 783-A is acts as an adjustable load impedance, with a voltmeter calibrated directly in watts dissipated in the load. | ||
It can safely handle 100 W at audio frequencies. | It can safely handle 100 W at audio frequencies. | ||
It can be used to test amplifiers, transformers, oscillators, filters, and similar networks. | It can be used to test amplifiers, transformers, oscillators, filters, and similar networks. | ||
:'''''CAUTION: This device contains asbestos.''''' | |||
==Specifications== | ==Specifications== | ||
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* '''Impedance Range:''' 2.5 to 20,000 Ω. | * '''Impedance Range:''' 2.5 to 20,000 Ω. | ||
* '''Power Accuracy:''' ±0.25 dB at full-scale reading. Overall frequency characteristic of power indication is flat within ±0.5 dB from 20 to 10,000 Hz; within 0.75 dB to 15,000 Hz. | * '''Power Accuracy:''' ±0.25 dB at full-scale reading. Overall frequency characteristic of power indication is flat within ±0.5 dB from 20 to 10,000 Hz; within 0.75 dB to 15,000 Hz. | ||
==Links== | ==Links== | ||