| 1. | Their circuitry used three Philco germanium PNP alloy-fused junction audio frequency transistors.
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| 2. | The AV receiver is classified as an audio frequency electronic amplifier.
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| 3. | A Capacitor is used to block the DC from subsequent audio frequency circuits.
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| 4. | Wires or strips carrying audio frequency currents are bonded to a thin diaphragm.
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| 5. | C "'between these frequencies, which was in the audio frequency range.
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| 6. | The line circuits operate with audio frequency alternating current ( Siemens FTGS 17 ).
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| 7. | H-P's first product was a device designed by Hewlett to generate high-quality audio frequencies.
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| 8. | It was also used to measure audio frequencies.
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| 9. | :Also, it might not be just audio frequency.
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| 10. | The coincidental formation of an audio frequency filter is also beneficial in that noise is reduced.
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