Question

When a transistor is used as an oscillator the frequency of oscillation is given by:

• A. $\nu =\frac{1}{2\pi \sqrt{LC}}$
• B. $\nu =\frac{1}{2\pi LC}$
• C. $\nu =\frac{L}{\pi \sqrt{LC}}$
• D. $\nu =\frac{1}{2\pi \sqrt{C}}$

Answer 1

The correct option is A $\nu =\frac{1}{2\pi \sqrt{LC}}$

When a transistor is used as an oscillator, the electrical oscillations are produced by L-C circuit (i.e a tank circuit containing inductor and capacitor in parallel). This LC circuit produces L-C oscillations consisting of an inductor of inductance L and a capacitor of variable capacitance C. The frequency of these oscillations is given by:
$\nu =\frac{1}{2\pi \sqrt{LC}}$