audio-frequency Power Meter
GenRad 1840-A

audio-frequency Power Meter

  • Power output of oscillators, amplifiers, preamplifiers, transformers, transducers, and low-frequency lines.
  • Output impedance, by adjustment of the load to yield maximum power indication.
  • Frequency-response characteristics of amplifiers, transformers, and other audio-frequency devices.
Type： Sound Level Meters & Calibrators
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1840-A

The General Radio 1840A measures audio-frequency power into any desired load. Its important uses include the measurement of:
 

  • *Power output of oscillators, amplifiers, preamplifiers, transformers, transducers, and low-frequency lines.
  • *Output impedance, by adjustment of the load to yield maximum power indication.
  • *Frequency-response characteristics of amplifiers, transformers, and other audio-frequency devices.

 

This instrument is basically a multi-tapped audio-frequency transformer with a fixed secondary load. Its two front-panel switches connect eight identical primary windings and six secondary taps in various combinations to provide a total of 48 different primary impedances.

The maximum power rating can be extended for any given impedance with the use of simple T-network attenuator, design data for which are supplied with the instrument.