5CH - Differential amplifiers as a monitoring circuit

The differential amplifier can be used to monitor changes in heat or light etc. The example we looked at was a temperature monitoring circuit. A wheatstone bridge is used to control V2-V1 and the output of the amplifier is connected to a suitable output device.



Some of you struggled a bit with this question so have a watch at the solution and make sure you understand this type of question okay. It may look complicated but if you split the circuit into the three parts as mentioned in the previous video then it is easier to understand.