[Qrp-Gaijin] shows how to do it with a single transistor ... He found that his original oscillator was driving an overtone crystal at its fundamental frequency. The device worked, but only ...

The crystals you’ll find attached to microcontrollers or RTCs are usually accurate to 100 parts per million at most, but that still means if you’re using one of these crystals as a clock’s ...

This evolution to more advanced technologies and internet-of-things (IoT) connected devices has seen increasing demand for ...