At the instant of switching on, the voltage at point B is divided by the resistor to obtain VB=8.3V. Since the voltage at the C terminal of the capacitor cannot be abrupt, at this time, the voltage at point A Va=0, the output level of the operational amplifier 4a is about 12V, and the voltage is passed through the Rll pair capacitor. C is charged. When Va rises above Vg, the output of the op amp 4b is inverted from low level to high level. However, the output of the op amp 3b is still low, so the LED 6 is illuminated. At this time, the capacitor C continues to be charged. When Va rises above Vf, the operational amplifier 3b also reverses to a high level, and the light-emitting M-tube MDS is lit, but since the output terminals of the 4b and 3b are both high, Therefore, the light-emitting M-tube LED6 is turned off. The principle is analogous.
An electrical appliance used to protect electrical equipment from high transient overvoltage hazards and to limit the duration of continuous flow.This term includes any external clearance necessary for the normal functioning of the appliance during operation and installation, whether or not it is a unit as a whole.
Surge protector, also known as lightning arrester, is an electronic device that provides safety protection for all kinds of electronic equipment, instruments and communication lines.When the electric circuit or communication lines or for outside disturbance suddenly produce peak current in voltage, surge protector in a very short time conduction tap, to avoid surge damage to other devices in the circuits.[1]
Surge protector, suitable for ac 50/60 hz, rated voltage 220 v to 380 v power supply system, the indirect lightning and thunder and lightning directly affect transient over voltage surge protection, or other applicable to the family home, the third industry and the surge protection industry requirements.
Surge Protector,Surge Voltage Protector,Eco-Friendly Surge Protector,Lightning Protection Surge Protector
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