Silence and explosion sound prevention circuit on set-top box

The utility model provides a silence and explosion sound prevention circuit on a set-top box, which comprises a first PNP transistor, a second PNP transistor, a first NPN transistor, a second NPN transistor and a third NPN transistor. The first PNP transistor, an electrolytic capacitor, a sixth resi...

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Hauptverfasser:	WU PUFEI, HONG BINGLIN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY PICTORIAL COMMUNICATION, e.g. TELEVISION
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creator	WU PUFEI HONG BINGLIN
description	The utility model provides a silence and explosion sound prevention circuit on a set-top box, which comprises a first PNP transistor, a second PNP transistor, a first NPN transistor, a second NPN transistor and a third NPN transistor. The first PNP transistor, an electrolytic capacitor, a sixth resistor and a fifth resistor form an explosion sound and silence prevention circuit for powering-up of startup, and the second PNP transistor, an electrolytic capacitor and a fourth resistor form an explosion sound and silence prevention circuit for powering-down of shutoff. The reliable silencing can be realized, and the problem of explosion sound in the powering-up of startup and powering-down of shutoff can be solved.
format	Patent
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The first PNP transistor, an electrolytic capacitor, a sixth resistor and a fifth resistor form an explosion sound and silence prevention circuit for powering-up of startup, and the second PNP transistor, an electrolytic capacitor and a fourth resistor form an explosion sound and silence prevention circuit for powering-down of shutoff. The reliable silencing can be realized, and the problem of explosion sound in the powering-up of startup and powering-down of shutoff can be solved.</abstract><oa>free_for_read</oa></addata></record>
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language	chi ; eng
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subjects	ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY PICTORIAL COMMUNICATION, e.g. TELEVISION
title	Silence and explosion sound prevention circuit on set-top box
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