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公开(公告)号:US4800331A
公开(公告)日:1989-01-24
申请号:US13758
申请日:1987-02-12
申请人: Richard V. Vesce , Andrew C. Reck
发明人: Richard V. Vesce , Andrew C. Reck
IPC分类号: G05F1/573
CPC分类号: G05F1/573
摘要: A high efficiency current limit circuit comprises a current sensor, a control unit responsive to the current sensor for providing a control signal to a solid-state series pass element which limits load current. A thermal safety circuit provides overtemperature circuit protection. Together, the current limit circuit and thermal safety circuit provide continuous short circuit protection (of indefinite time duration) with automatic recovery upon removal of the short.
摘要翻译: 高效率限流电路包括电流传感器,响应于电流传感器的控制单元,用于向限制负载电流的固态串联元件提供控制信号。 热安全电路提供过温保护电路。 一起,电流限制电路和热安全电路提供连续的短路保护(无限期持续时间),在短路时自动恢复。
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公开(公告)号:US4788462A
公开(公告)日:1988-11-29
申请号:US013757
申请日:1987-02-12
CPC分类号: H03K17/22
摘要: A Power-On-Reset (POR) Circuit compares a logic supply voltage to a reference voltage and provides a logic voltage validity signal if the logic voltage is greater than the reference voltage; the circuit delays, on startup, the validity signal for a selected period and then provides a drive signal for driving a solid-state switch which provides an open circuit on the presence of the drive signal, indicating logic voltage validity, and a short circuit in its absence, indicating invalidity; and the circuit immediately disables the drive signal if the logic voltage falls below the reference voltage. The selected start-up delay period is independent of the supply voltage magnitude.
摘要翻译: 上电复位(POR)电路将逻辑电源电压与参考电压进行比较,并在逻辑电压大于参考电压时提供逻辑电压有效信号; 电路在启动时延迟所选择的周期的有效信号,然后提供用于驱动固态开关的驱动信号,该固态开关在存在驱动信号时提供开路,指示逻辑电压有效性和短路 缺席,表示无效; 如果逻辑电压低于参考电压,电路将立即禁用驱动信号。 选择的启动延迟时间与电源电压幅值无关。
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公开(公告)号:US4593213A
公开(公告)日:1986-06-03
申请号:US614172
申请日:1984-05-25
申请人: Richard V. Vesce , John R. Torres
发明人: Richard V. Vesce , John R. Torres
CPC分类号: H03K17/162 , H02M3/33507
摘要: A current-limited MOSFET switch is achieved using a zener diode connected from the gate to source of the MOSFET.
摘要翻译: 使用从MOSFET的栅极到源极连接的齐纳二极管实现限流MOSFET开关。
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公开(公告)号:US4649467A
公开(公告)日:1987-03-10
申请号:US760849
申请日:1985-07-31
申请人: Richard V. Vesce , John R. Torres
发明人: Richard V. Vesce , John R. Torres
CPC分类号: H02M7/53803
摘要: A high efficiency MOSFET sine wave generator is provided using the class D pulse width modulation principle. A triangle wave at f.sub.0 is compared to a variable amplitude sinusoid at about 1/10 f.sub.0 to provide a pulse width modulated signal for driving a pair of power MOSFETS connected for switching a B+ and a B- power supply. The power switch output is LC filtered and fedback for regulating the amplitude of the modulating sinusoid.
摘要翻译: 使用D类脉冲宽度调制原理提供了高效MOSFET正弦波发生器。 将f0处的三角波与大约1/10 f0的可变幅度正弦曲线进行比较,以提供用于驱动连接用于切换B +和B-电源的一对功率MOSFET的脉宽调制信号。 电源开关输出为LC滤波和反馈,用于调节调制正弦波的幅度。
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公开(公告)号:US4618813A
公开(公告)日:1986-10-21
申请号:US708197
申请日:1985-03-04
申请人: Richard V. Vesce , John R. Torres
发明人: Richard V. Vesce , John R. Torres
CPC分类号: G05F1/5735 , G05F1/56 , G05F1/585
摘要: A three-terminal series regulator achieves high efficiency by using an enhancement mode P-channel or N-channel FET for the series regulating element, respectively, for positive or negative voltage regulation thereby eliminating the need for a boost voltage and also minimizing the input-to-output voltage differential at high power levels. Short circuit protection is provided using output voltage and current foldback.
摘要翻译: 三端子串联调节器分别通过使用用于串联调节元件的增强型P沟道或N沟道FET用于正或负电压调节来实现高效率,从而消除对升压电压的需要,并且还使输入 - 高功率电平的输出电压差。 使用输出电压和电流折返提供短路保护。
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