Quartz Crystals and Resonators

Piezoelectric quartz vibrates at a precise frequency, giving accurate clocks (±10–50 ppm).

Easy

Need the specified load capacitors: $C_L = \frac{C_1 C_2}{C_1 + C_2} + C_{stray}$ . Ceramic resonators are cheaper but less accurate; 32.768 kHz crystals drive real-time clocks.

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