Which are the two basic types of isolators found in traffic signal systems?

In traffic signal systems, isolators are essential for maintaining the integrity of the electrical signals and ensuring safety in the operation of the traffic lights. The two basic types of isolators—AC isolators and DC isolators—serve different purposes based on the type of current they are designed to handle.

AC isolators are used for alternating current applications, which are commonly found in many traffic signal systems. They help in protecting the circuits from voltage surges and minimizing interference from external electrical noise.

DC isolators, on the other hand, are specifically designed for direct current applications, which may be less common but are critical in specific types of signal systems, especially when dealing with battery-powered operations or certain control systems.

Both AC and DC isolators ensure that the various components of traffic signal systems operate safely and efficiently. They prevent unwanted interactions between circuits and protect sensitive equipment from damage due to differences in electrical potential. This distinction is vital for technicians working with traffic signals as they need to apply the correct type of isolator depending on the power supply used in the system.