Similarly there can be many ways to protect a circuit from overvoltage. This makes transient voltage suppression diodes useful for protection against very fast and often damaging voltage transients. Polarity Protection Circuit Diodes Learn Sparkfun Com Signal Diode And Switching Diode Characteristics A transient voltage suppression diode can respond to over voltages faster than other common over voltage protection components such as varistors or gas discharge tubes gdt. Protection diode circuit . The string of diodes are used to limit the leakage current in a usable input range but provide protection when the negative common mode range is exceeded. Because a diode only allows current to flow in one direction in a circuit but not the other it can protect components in a circuit that are sensitive to current that flows through them in the wrong direction. Manu...
