One kind of 0 ~ 10V dimming interface protection circuit which generates a signal that is applied to control the light output of the voltage between the first and second lead wires root dimming interface, including a first current-limiting device in series between the line voltage source and ...
The over-voltage protection circuit for mobile devices comprising at least one connector with at least one electrical contact for connecting external devices and at least one internal contact to a circuitry using said connector, wherein said over-voltage protection circuit comprises: an electrically ...
笔者利用手中现有材料,因陋就简,制作了一个光电控制过压保护装置,其结构简草,动作灵敏,效果比较满意。 工作原理如附图所示,本装置利用光电耦合器的通断与否进行控制。电压正常时,光电耦合器几乎无输出,BG管被反偏而截止。当某种原因使电路电压升高时(零线断线或零线错接成相线等),取样电路次级电压随之升高,光电耦合...
使用TL431分流稳压器限制高交流输入电压,Over-voltage protection circuit 关键字:使用TL431分流稳压器限制高交流输入电压 使用TL431分流稳压器限制高交流输入电压 SMPS中,电路箝住输入交流电压到功率MOSFET工作的安全等级。 大多数隔离、离线的SMPS(开关型能量供给),包括回扫、前进和共鸣,必须在有效值90到260V的输入电压...
An overvoltage protection circuit for a vehicle electrical generating system provides a plurality of controlled rectifiers connected to the generator output winding for shunting high transient voltages to ground. A control transistor having a time delay biasing circuit is connected to the field winding ...
Working of Overvoltage protection circuit: The above circuit is designed to protect the circuit that connects to it from voltage over 13V. It is meant to use with 12V rated circuits / devices. Generally 12V devices will have a tolerance up to 13V. So it will establish protection over 13V...
The present invention discloses an overvoltage protection (OVP) circuit for use in a charger circuit system, comprising: a power transistor electrically connected between a voltage supply and a battery; an OVP circuit which turns off the transistor when a voltage supply exceeds a threshold value;...
The circuit has a switch (SE) in the power electronics (LE) supplying the 14 Volt branch, whose input is connected to the 42 Volt branch, which switches to earth its output to the 14 Volt branch if there is a short circuit between the 14 and 42 Volt branches and trips a breaker in...
Ideal characteristics of an over voltage protection circuit Prevent the excess voltage from being applied to the components. The protection circuit should not interfere with the normal function of the system or circuit. The protection circuit should not load the power supply and cause related voltage...
Overvoltage protection (OVP) devices protect downstream circuits from overvoltage conditions that occur during load-dump events or transients. Sometimes the basic application circuit for an OVP device is not adequate for a particular application; here are two common variations. First, the circuit's ...