I am currently building a metal detector, In one part of the circuit there are 6 diodes that are used in order to "protect" the op amp. Can somebody please explain to me how they are protecting the op amp ? and why they are arranged in the order that they are?
Here is a link to the PDF describing the metal detector circuit:-
http://www.geotech1.com/pages/metdet/projects/twinloop/twinloop.pdf
The area in question is labelled "Fig 4. Circuit diagram of reciever"
Any help is greatly appreciated !
Here is a link to the PDF describing the metal detector circuit:-
http://www.geotech1.com/pages/metdet/projects/twinloop/twinloop.pdf
The area in question is labelled "Fig 4. Circuit diagram of reciever"
Any help is greatly appreciated !