The first quartz crystal oscillator was built by Walter G. Cady in 1921. It was in 1923, D. W. Dye at the National Physical Laboratory in the UK and Warren Marrison at Bell Telephone Laboratories ...

Introduced in the 1920s, the quartz crystal oscillator has long been the workhorse amongst electronic timing devices. A newer type of oscillator, which has been in development since the 1960s and ...

Another great crystal oscillator circuit with BB139, a 2-nd harmonic quartz crystal and one BF214 transistor. So, the Q quartz is half of the desired transmitter frequency, L1 has 24 turns, 0.08mm Ø ...

The Pierce oscillator. Omegatron [CC BY-SA 3.0], via Wikimedia Commons. Practical crystals take the form of precisely-ground discs or wafers of synthetic quartz, with chemically deposited metal ...

According to the mixed signal semiconductor specialist, it is the only company to offer quartz-crystal level performance with a cmos oscillator in both forms. The ICs are designed to eliminate quartz ...