The Hartley oscillator uses two inductors a tickler coil on

The Hartley oscillator uses _____.

two inductors.

a tickler coil.

only resistors and capacitors.

a tungsten lamp.

Hysteresis voltage is defined as _____.

Solution

The Hartley oscillator is a LC oscillator which are used to find resonance condition. This oscillator consists of two inductors in series or a coil having tappings in parallel with a variable capacitor. By adjusting any two parameters of inductance, capacitance and frequency, calculating other parameter by formula w^2=1/ LC.

The hysteresis voltage is the difference of upper trigger voltage(Vuth) and lower trigger voltage(Vlth) points of Schmitt trigger.

i.e. Hysteresis voltage = Vuth-Vlth