1. Crystal Oscillator: Crystal oscillators de piezoelectric tumi a ɛwɔ quartz crystal mu no di dwuma de yɛ frequency sɛnkyerɛnne a ɛyɛ den. Wɔde di dwuma kɛse wɔ ɛlɛtrɔnik mfiri ahorow te sɛ kɔmputa, nkitahodi mfiri, ne ɛlɛtrɔnik mfiri a wɔde di dwuma mu.
2. Ceramic Resonator: Ceramic resonators de ceramic di dwuma sɛ dielectric ade na ɛnam nkitahodi a ɛda capacitance ne inductance ntam so na ɛyɛ resonate. Saa mfiri yi yɛ ketewa na ɛho ka sua, na ɛma wɔtaa de di dwuma wɔ frequency a ɛba fam-frequency circuits mu.
3. LC Oscillator: LC oscillators no yɛ inductor (L) ne capacitor (C). Sɛ wosakra inductor ne capacitor no botae ahorow a, ɛsakra oscillation frequency no. Ɛnyɛ den sɛ wɔbɛyɛ na ɛfata ma frequency ahorow pii.