| 1. | A particularly critical component is the output transformer of a valve amplifier.
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| 2. | Such amplifiers are expensive because of the output transformers required.
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| 3. | In a push pull amplifier this second harmonic distortion is cancelled in the output transformer.
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| 4. | However, the substations are now all equipped with solid state low thermal output transformers.
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| 5. | Earlier designs used a separate line output transformer and a well insulated high voltage multiplier unit.
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| 6. | Some tube amplifiers have output transformer taps to adapt the amplifier output to typical loudspeaker impedances.
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| 7. | High-grade output transformers raise the microphone's signal-to-noise ratio.
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| 8. | All these models employed output transformers and beam tetrode or pentode tubes ( for increased efficiency ).
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| 9. | Grain-oriented steel is used in large power and distribution transformers and in certain audio output transformers.
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| 10. | The miniature output transformer was followed by the Main Gain control, which functioned as a Master Volume.
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