[Debraj] needed a simple signal generator for a project he was working ... A schematic for his offset circuit is available on his site, should you wish to build one of your own.

His use of a 3-phase motor from a CD-ROM drive as the generator isn’t particularly unexpected, these motors are ubiquitous and readily generate power when spun up. A simple 3-phase rectifier and ...

To improve the performance of clock generator circuits and mitigate these issues ... which can lead to fractional spurs and noise. A simple comparator-based DTC gain calibration technique is used to ...