Dc Voltage Spike Protection Circuit

In its simplest form it can be provided by using a zener diode placed across the output of the regulated power supply.

Dc voltage spike protection circuit.

Another very simple form of over voltage protection uses an approach called voltage clamping. Click on the green links to find littelfuse circuit protection solutions. 24 v dc 1 2 28 8 v dc. The zener diode used is rated for 12v.

Mov s are best suited for protection on bidirectional ac power supplies while zener diodes are best suited for smaller low energy dc supplies. Dc input circuits can experience current overload short circuit conditions or voltage transients esd etc and require ptcs multilayer varistors and fuse protection to meet regulatory standards or to ensure reliable operation. Given that no varistors have a voltage. Littelfuse is the world leader in circuit protection products and services offering.

Dc transient voltage suppressor circuit. The most common form of voltage clamping devices are metal oxide varistors mov s and zener diodes. Here in this circuit a 9v dc source is feeding the load which is a dc motor. Also known as the let through voltage this specifies what spike voltage will cause the protective components inside a surge protector to short or clamp.

With the zener diode voltage chosen to be slightly above the maximum rail voltage under normal conditions it will not conduct. This means that if the circuit were to receive voltage above 12v the zener diode would then break down and begin conducting. A lower clamping voltage indicates better protection but can sometimes result in a shorter life expectancy for the overall protective system.