发明名称 SAFETY CIRCUIT FOR HORIZONTAL OSCILLATION CIRCUIT OF TELEVISION RECEIVER
摘要 PURPOSE:To maintain a stop mode of oscillation of a horizontal oscillation circuit even if an X-ray protector is released and to improve the perfect operations of the horizontal oscillation circuit, by driving a horizontal output circuit with oscillation of the horizontal oscillation circuit and stopping the actuation of the horizontal output circuit with stop of oscillation through a control circuit. CONSTITUTION:The 1st power supply circuit S1 used with a horizontal oscillation circuit 1 consists of a diode D1 connected to the secondary winding of a transformer T1 and a capacitor C3. A horizontal output circuit (b) connected to a voltage reduction type chopper regulator circuit (a) consists of a primary winding of an oscillation transformer T2, a capacitor C5 and a transistor TRQ1. The 2nd power supply circuit S2 used with the circuit 1 consists of a diode D2 connect to the secondary winding of the transformer T2 and a capacitor C4. A control circuit (d) of the circuit (b) consists of a primary winding connected to the output terminal of the circuit 1 and a hot/cold separating transformer T4 coupled to the secondary winding connected to the base of a TRQ2 of a drive circuit (c).
申请公布号 JPS61150469(A) 申请公布日期 1986.07.09
申请号 JP19840275571 申请日期 1984.12.24
申请人 SHARP CORP 发明人 HOSHINO MIKIO
分类号 H04N3/18 主分类号 H04N3/18
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