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783-A: Difference between revisions
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[[File:GR 783-A Front.jpg|thumb|450px|right|General Radio 783A Output-Power Meter]] | [[File:GR 783-A Front.jpg|thumb|450px|right|General Radio 783A Output-Power Meter]] | ||
The '''General Radio 783A''' is an Output-Power Meter [[introduced in 1944]] Catalog K3 and 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. It can safely | The '''General Radio 783A''' is an Output-Power Meter [[introduced in 1944]] Catalog K3 and remained available through Catalog Q 1961. | ||
handle 100 W at audio frequencies. It can be used to test amplifiers, transformers, oscillators, filters, and similar networks. | 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 be used to test amplifiers, transformers, oscillators, filters, and similar networks. | |||
CAUTION | CAUTION: This device contains asbestos. | ||
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* '''Power Range:''' 0.2 mW to 100 W in five ranges. | * '''Power Range:''' 0.2 mW to 100 W in five ranges. | ||
* '''Impedance Range:''' 2.5 to 20,000 Ω. | * '''Impedance Range:''' 2.5 to 20,000 Ω. | ||
* '''Power Accuracy:''' | * '''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. | ||
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==Manuals== | ==Manuals== | ||