Electronic bridges are used to cross from one circuit, channel, board, or element over to another. An electronic bridge is used to measure various parameters like inductance, capacitance, admittance, conductance, and many impedance parameters. There are many types of electronic bridges. Examples include a wheatstone circuit bridge, H circuit bridge, and a network bridge. Wheatstone circuit bridges are electrical bridge circuits that are used to measure resistance. Wheatstone circuit bridges consists of a common electric current source such as a battery and a galvanometer, which connects two parallel branches, containing four resistors and values of three resistors are known. An H circuit bridge has the capability to drive the motor forward or backward at any speed. An H circuit bridge can optionally use a completely independent power source. A network bridge is an inexpensive method to connect LAN segments. Other electronic bridges are commonly available.
There are several ways in which electronic bridges function. Electric bridges are employed for interfacing transducers and help to measure impedance at high frequencies. Wheatstone circuit bridges are suitable for measuring any small change in resistance. Wheatstone circuit bridges consists of two parallel branches of which one branch contains a known resistance and an unknown resistance, while the other parallel branch contains resistors of known values. This circuit measures the value of unknown resistor by adjusting the values of other three resistances until the current passing through the galvanometer decreases to zero. In a H circuit bridge a condition called ‘shoot through’ exists in which there is a path between the positive and the negative side of the H bridge which can make semiconductors ballistic. A network bridge is a type of electric bridge that connects two sides of adjacent networks. A network bridge is also called as a network switch. Electronic bridges are designed and manufactured to meet most industry specifications.
Electronic bridges are used in many applications. Some examples include measurement of impedance, capacitance, conductance, and very high and very low resistance. Electronic bridges should adhere to Institute of Electrical and Electronics Engineers (IEEE).