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1. 发明授权

US4652984A Self-oscillating power-supply circuit 失效
标题翻译：自振电源电路
公开(公告)号：US4652984A
公开(公告)日：1987-03-24
申请号：US736630
申请日：1985-05-20
申请人： Jouw van der Akker , Joseph A. M. Plagge
发明人： Jouw van der Akker , Joseph A. M. Plagge
IPC分类号： H02P7/29 , H02M3/28 , H02M3/338 , H02M3/335
CPC分类号： H02M3/3385
摘要： A circuit for energizing a load (10) with different input voltages comprises a transformer (6), having a primary winding (n.sub.1) in series with a switching transistor (T.sub.1) the load (10), and a current sensing resistor (R.sub.2) between the input terminals. The secondary winding (n.sub.2), in series with a diode (D.sub.1) connected is in parallel with the load. A starting resistor (R.sub.1) starts the circuit oscillating via a positive-feedback loop comprising, in series, a first resistor (R.sub.4), a capacitor (C.sub.1) and a second resistor (R.sub.5). This feedback loop is coupled between one end of the secondary winding and the base of the switching transistor. A control transistor (T.sub.2), whose base is connected to the current-sensing resistor (R.sub.2), turns off the switching transistor as a function of the primary current. The energy stored in the transformer is then delivered to the load by an output current in the secondary winding. This output current increases as the input voltage increases as a result of an increasing saturation of the switching transistor via the positive feedback. A zener diode (Z.sub.1) is coupled to the switching transistor so that, above a specific input voltage, the zener diode turns on and drains away the base current of the switching transistor so as to limit the output current.
摘要翻译：用于对具有不同输入电压的负载（10）供电的电路包括具有与负载（10）的开关晶体管（T1）串联的初级绕组（n1）的变压器（6）和电流感测电阻器（R2）在输入端子之间。与连接的二极管（D1）串联的次级绕组（n2）与负载并联。启动电阻器（R1）通过串联的第一电阻器（R4），电容器（C1）和第二电阻器（R5）的正反馈回路来启动电路振荡。该反馈回路耦合在次级绕组的一端和开关晶体管的基极之间。基极连接到电流检测电阻（R2）的控制晶体管（T2）根据初级电流关断开关晶体管。然后，存储在变压器中的能量通过次级绕组中的输出电流传送到负载。随着开关晶体管通过正反馈的饱和增加，输入电压增加，该输出电流增加。齐纳二极管（Z1）耦合到开关晶体管，使得在特定输入电压之上，齐纳二极管导通并且消耗开关晶体管的基极电流，从而限制输出电流。

2. 发明授权

US4939632A Power supply circuit 失效
公开(公告)号：US4939632A
公开(公告)日：1990-07-03
申请号：US404931
申请日：1989-09-07
申请人： Joseph A. M. Plagge , Johannes E. Algra
发明人： Joseph A. M. Plagge , Johannes E. Algra
IPC分类号： B26B19/38 , H02J7/02 , H02M1/10 , H02M3/155 , H02M3/28 , H02M3/338 , H02P7/29
CPC分类号： H02M3/3385 , H02J7/022 , H02M1/10
摘要： A self-oscillating power supply circuit comprises a series arrangement of the primary winding (N.sub.1) of a transformer (TR), the main current path of a first semiconductor switch (T.sub.1) and a current measuring resistor (R.sub.1). The first semiconductor switch is driven by a second semiconductor switch (T.sub.2) which in turn is controlled by a comparator (CP). The voltage across the current measuring resistor is applied to the non-inverting input (6) of the comparator and, a reference voltage obtained from a reference voltage source (RS) is applied to the comparator inverting input (5). By arranging a capacitor (C.sub.2) between the output of the second semiconductor switch and the inverting input (5) of the comparator, the first semiconductor switch rapidly turns-off at the end of the forward phase at an accurately determined current through the primary winding. By applying a lower reference voltage to the comparator at a higher mains voltage, an output current is obtained from the transformer secondary winding (N.sub.2) for the load (L) which is substantially independent of the mains voltage.

3. 发明授权

US4969077A Power supply circuit 失效
标题翻译：电源电路
公开(公告)号：US4969077A
公开(公告)日：1990-11-06
申请号：US381567
申请日：1989-07-18
申请人： Joseph A. M. Plagge
发明人： Joseph A. M. Plagge
IPC分类号： H02M3/28 , H02J7/02 , H02M3/335
CPC分类号： H02M3/335 , H02J7/022
摘要： A power supply circuit composed of a series arrangement of the primary winding of a transformer (TR), a first transistor (T.sub.1) and a current measuring resistor (R.sub.2). The first transistor (T.sub.1) is switched by means of a second transistor (T.sub.2). The second transistor is controlled by the combination of a first signal which is proportional to the intensity of the current through the current measuring resistor (R.sub.2) and a second signal which is the voltage, filtered by a low-pass filter, across the secondary winding (n.sub.2) of the transformer.

4. 发明授权

US5101334A High speed power supply circuit with circuit with positive feedback 失效
标题翻译：具有正反馈电路的高速电源电路
公开(公告)号：US5101334A
公开(公告)日：1992-03-31
申请号：US515998
申请日：1990-05-21
申请人： Joseph A. M. Plagge , Johannes E. Algra
发明人： Joseph A. M. Plagge , Johannes E. Algra
IPC分类号： H02J7/02 , H02M1/10 , H02M3/338
CPC分类号： H02M1/10 , H02J7/022 , H02M3/3385
摘要： A self-oscillating power supply circuit comprises a series arrangement of the primary winding (N.sub.1) of a transformer (TR), the main current path of a first semiconductor switch (T.sub.1) and a current measuring resistor (R.sub.1). The first semiconductor switch is driven by a second semiconductor switch (T.sub.2) which in turn is controlled by a comparator (CP). The voltage across the current measuring resistor is applied to the non-inverting input (6) of the comparator and, a reference voltage obtained from a reference voltage source (RS) is applied to the comparator inverting input (5). By arranging a capacitor (C.sub.2) between the output of the second semiconductor switch and the inverting input (5) of the comparator, the first semiconductor switch rapidly turns-off at the end of the forward phase at an accurately determined current through the primary winding. By applying a lower reference voltage to the comparator at a higher mains voltage, an output current is obtained from the transformer secondary winding (N.sub.2) for the load L, which is substantially independent of the mains voltage.
摘要翻译：自振荡电源电路包括变压器（TR）的初级绕组（N1），第一半导体开关（T1）的主电流路径和电流测量电阻器（R1）的串联布置。第一半导体开关由第二半导体开关（T2）驱动，第二半导体开关又由比较器（CP）控制。电流测量电阻上的电压被施加到比较器的非反相输入端（6），从参考电压源（RS）获得的参考电压被施加到比较器反相输入端（5）。通过在第二半导体开关的输出和比较器的反相输入端（5）之间布置电容器（C2），第一半导体开关在正相结束时以精确确定的电流通过初级绕组。通过在较高的电源电压下向比较器施加较低的参考电压，对于负载L从变压器次级绕组（N2）获得输出电流，其基本上与电源电压无关。

5. 发明授权

US4684871A Power supply circuit 失效
标题翻译：电源电路
公开(公告)号：US4684871A
公开(公告)日：1987-08-04
申请号：US845659
申请日：1986-03-28
申请人： Joseph A. M. Plagge
发明人： Joseph A. M. Plagge
IPC分类号： H02J7/10 , H02J7/02 , H02M3/156 , H02M3/335
CPC分类号： H02M3/1563 , H02J7/022 , Y10S30/01 , Y10S320/28
摘要： A self-oscillating power supply circuit for charging a battery in which energy is stored in a transformer (Tr) during the so-called forward intervals. This energy is applied as a charge current to the battery (6) during the flyback intervals. To prevent overcharge of the battery, the circuit includes a battery voltage protection circuit (10) receiving its power supply from the battery. A fraction of the battery voltage is applied to this circuit by means of a voltage divider (R.sub.3, R.sub.4) connected across the battery by means of a switch (S.sub.1) during the flyback intervals. To prevent the voltage drop across the internal resistance of the battery from influencing the measurement of the battery voltage, the battery voltage is measured after the end of a flyback interval and before the commencment of the next forward interval. This is achieved by short-circuiting the inputs (11, 12) of the protection circuit (10) by means of two diodes (D.sub.1, D.sub.2) during the flyback intervals.
摘要翻译：一种自振荡电源电路，用于在所谓的正向间隔期间对能量存储在变压器（Tr）中的电池充电。在回扫间隔期间，该能量作为充电电流施加到电池（6）。为了防止电池的过充电，该电路包括从电池接收其电源的电池电压保护电路（10）。电池电压的一小部分通过在回扫间隔期间通过开关（S1）在电池两端连接的分压器（R3，R4）施加到该电路。为了防止电池内部电阻上的电压降影响电池电压的测量，在回扫间隔结束之后和下一个正向间隔的通话之前测量电池电压。这是通过在回扫间隔期间通过两个二极管（D1，D2）短路保护电路（10）的输入（11,12）来实现的。

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