Understanding Oscillators

To convert DC input to AC output

To store electrical energy

To convert AC input to DC output

To amplify sound signals

Harmonic oscillator

Square wave oscillator

Sawtooth oscillator

Relaxation oscillator

Amplifier and feedback network

Diode and transistor

Resistor and capacitor

Inductor and transformer

270 degrees

90 degrees

180 degrees

360 degrees

Greater than one

Less than one

Zero

Equal to one

They die out

They stop immediately

They remain constant

They grow larger and may clip

Transformer and resistor

Diode and transistor

Inductor and capacitor

Resistor and capacitor

1 over 2 pi square root LC

1.44 over RA plus 2RB times C

2 pi times F times L

1 over 2 pi RC

1 over 2 pi FC

2 pi times F times L

1 over 2 pi RC

2 pi times F times C

When inductive reactance is greater than capacitive reactance

When inductive reactance is less than capacitive reactance

When inductive reactance equals capacitive reactance

When there is no reactance