-
公开(公告)号：US4556770A
公开(公告)日：1985-12-03
申请号：US548290
申请日：1983-11-03
CPC分类号： H05B6/062
摘要： An induction heating coil and a self-excited inverter are connected to a ripple voltage source. The self-excited inverter comprises a transistor as a switching element and the transistor is rendered conductive responsive to a drive voltage applied for each cycle of the ripple voltage source, whereby the self-excited inverter is started at each cycle of the ripple voltage source. The self-excited inverter stops the oscillation when the voltage of the ripple voltage source becomes lower than a predetermined value. During the non-oscillation period of the intermittent oscillation, the oscillation output of the self-excited inverter is detected. If and when the oscillation output is detected at that time, the oscillation of the inverter is stopped. Furthermore, the pulses of the attenuating oscillation of the self-excited inverter during the oscillation rest period are counted. If and when the count value of the counter is smaller than a predetermined value, the oscillation of the self-excited inverter is started, whereas if and when the count value of the counter exceeds the predetermined value, the oscillation stop state is continued.
摘要翻译： 感应加热线圈和自激逆变器连接到纹波电压源。 自激逆变器包括作为开关元件的晶体管，并且响应于施加到纹波电压源的每个周期的驱动电压而使晶体管导通，由此在脉动电压源的每个周期启动自激逆变器。 当脉动电压源的电压变得低于预定值时，自激逆变器停止振荡。 在间歇振荡的非振荡周期期间，检测出自激逆变器的振荡输出。 如果在此时检测到振荡输出，则停止逆变器的振荡。 另外，在振荡停止期间，对自激逆变器的衰减振荡的脉冲进行计数。 如果当计数器的计数值小于预定值时，自激逆变器的振荡开始，而当计数器的计数值超过预定值时，振荡停止状态继续。
-
公开(公告)号：US4536631A
公开(公告)日：1985-08-20
申请号：US548289
申请日：1983-11-03
CPC分类号： H05B6/062
摘要： An induction heating coil and a self-excited inverter are connected to a ripple voltage source. The self-excited inverter comprises a transistor as a switching element and the transistor is rendered conductive responsive to a drive voltage applied for each cycle of the ripple voltage source, whereby the self-excited inverter is started at each cycle of the ripple voltage source. The self-excited inverter stops the oscillation when the voltage of the ripple voltage source becomes lower than a predetermined value. During the non-oscillation period of the intermittent oscillation, the oscillation output of the self-excited inverter is detected. If and when the oscillation output is detected at that time, the oscillation of the inverter is stopped. Furthermore, the pulses of the attenuating oscillation of the self-excited inverter during the oscillation rest period are counted. If and when the count value of the counter is smaller than a predetermined value, the oscillation of the self-excited inverter is started, whereas if and when the count value of the counter exceeds the predetermined value, the oscillation stop state is continued.
-
公开(公告)号：US4438311A
公开(公告)日：1984-03-20
申请号：US163088
申请日：1980-06-26
CPC分类号： H05B6/062
摘要： An induction heating coil and a self-excited inverter are connected to a ripple voltage source. The self-excited inverter comprises a transistor as a switching element and the transistor is rendered conductive responsive to a drive voltage applied for each cycle of the ripple voltage source, whereby the self-excited inverter is started at each cycle of the ripple voltage source. The self-excited inverter stops the oscillation when the voltage of the ripple voltage source becomes lower than a predetermined value. During the non-oscillation period of the intermittent oscillation, the oscillation output of the self-excited inverter is detected. If and when the oscillation output is detected at that time, the oscillation of the inverter is stopped. Furthermore, the pulses of the attenuating oscillation of the self-excited inverter during the oscillation rest period are counted. If and when the count value of the counter is smaller than a predetermined value, the oscillation of the self-excited inverter is started, whereas if and when the count value of the counter exceeds the predetermined value, the oscillaton stop state is continued.
摘要翻译： 感应加热线圈和自激逆变器连接到纹波电压源。 自激式逆变器包括作为开关元件的晶体管，并且响应于施加到纹波电压源的每个周期的驱动电压而使晶体管导通，由此在脉动电压源的每个周期启动自激逆变器。 当脉动电压源的电压变得低于预定值时，自激逆变器停止振荡。 在间歇振荡的非振荡周期期间，检测出自激逆变器的振荡输出。 如果在此时检测到振荡输出，则停止逆变器的振荡。 另外，在振荡停止期间，对自激逆变器的衰减振荡的脉冲进行计数。 如果当计数器的计数值小于预定值时，自激逆变器的振荡开始，而当计数器的计数值超过预定值时，振荡停止状态继续。
-
-
搜索结果
3 条记录 (耗时 0.012 秒)
