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“Hi i’m Erik an electronic engineer and Hobbyist :)In this instructable i’ll show you how to make a fully functional AM Radio using only 3 transistors and some recycled components!Let’s go!”
Content for Variable Capacitor
A variable capacitor is a capacitor whose capacitance may be intentionally and repeatedly changed mechanically or electronically. Variable capacitors are often used in L/C circuits to set the resonance frequency, e.g. to tune a radio (therefore it is sometimes called a tuning capacitor or tuning condenser), or as a variable reactance, e.g. for impedance matching in antenna tuners.