Cheese Cheese making is essentially a dehydration process in which milk casein, fat and minerals are concentrated 6 to 12-fold, depending on the variety. The basic steps common to most varieties are acidification, coagulation, dehydration, and salting. Acid production is the major function of the starter bacteria.
A current transducer is a device that coverts alternating or direct electrical current signals into analog instrumentation signals so that they can be used and readily interpreted by certain industrial control systems.
A transistor is a controlled resistor so to speak. When there is more base current, the transistor conducts more from Collector to emitter. So when it is said that the transistor is driven, that just means it is being turned on in varying amounts by driving base current into it to control the current flow.