Simmerstat energy regulators, also known as infinite switches, are a type of electrical control device used in various heating and cooking applications. They are designed to regulate the amount of energy supplied to a heating element, allowing the user to adjust the temperature of the system.

Simmerstat energy regulators consist of a bimetallic strip, which expands or contracts with changes in temperature. The strip is connected to a contact arm that moves over a resistor plate, which varies the amount of electrical resistance in the circuit. This variation in resistance regulates the amount of energy supplied to the heating element, allowing the temperature of the system to be adjusted.

Simmerstat energy regulators are commonly used in applications such as electric stovetops, ovens, grills, and fryers. They are relatively simple and reliable, and are available in a range of designs and sizes to suit different applications.

The advantages of simmerstat energy regulators include their simplicity, reliability, and low cost. They are also relatively easy to install and operate, making them a popular choice for both residential and commercial applications.

However, simmerstat energy regulators may not be suitable for applications that require precise temperature control or rapid changes in temperature, as they can be relatively slow to respond to temperature fluctuations. They may also consume more energy than other types of temperature control devices, such as digital temperature controllers.