Audio amplifier switch-on control circuit
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United States of America Patent
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Jan 20, 1987
Grant Date -
N/A
app pub date -
Apr 12, 1985
filing date -
Apr 20, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A capacitor which is progressively chargeable in response to a switching on of the equipment, however brought about, is associated with an oscillating circuit with intervention threshold. As the load voltage of said capacitor increases the oscillating circuit shifts from a first to a second operating state, generating a switch-on current for the audio amplifier. The latter can be placed in stand-by condition by discharging to earth said capacitor by means of a suitable switch.
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