|-
! scope="row"| C1
| Capacitor
| 100n
|-
! scope="row"| C2 - C3
| Capacitor
| 1n
|-
! scope="row"| C4
| Capacitor
| 27n
|-
! scope="row"| L1
| Inductor
| 1n27u
|-
! scope="row"| Q1
| NPN BJT 2N2222
| beta = 150
|-
! scope="row"| Vin
| Vertical Voltmeter
| N/A
|-
! scope="row"| Vout
| Vertical Voltmeter
| N/A
|-
! scope="row"| Iout
| Horizontal Ammeter
| N/A
|}
----
Voltage Source VCC: 12V
NPN BJT: 2N2222
Four Resistors: R1, R2, R3 and R4
Three Capacitors: C1, C2 and C3
Inductor: L1
----
The opposite figure shows a Colpitts oscillator. The parallel resonant LC circuit consisting of L1 and capacitors C3 and C4 is connected between the base and the collector of transistor Q1, and partial feedback voltage is fed to its emitter through the voltage divider constituted by C3 and C4. The oscillating frequency of Colpitts oscillator can be calculated from: