i have asked to do resonance type LC Meter by using transistors
I searched in the internet and i found this schematic in this book in page 41 but there are somethings i couldn't under stand first what is fx that connected with spdt switch second when you look in pcb there are four terminals for FET transistor what is shield in the transistor finally what is the difference between variable capacitor and capacitor trimmer please anyone help me
the book link here
http://www.mediafire.com/download/sopvv90ode72w7j/electronics-for-you-projects-and-ideas-2000.pdf
I searched in the internet and i found this schematic in this book in page 41 but there are somethings i couldn't under stand first what is fx that connected with spdt switch second when you look in pcb there are four terminals for FET transistor what is shield in the transistor finally what is the difference between variable capacitor and capacitor trimmer please anyone help me
the book link here
http://www.mediafire.com/download/sopvv90ode72w7j/electronics-for-you-projects-and-ideas-2000.pdf
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