Besides quartz, one other substances that exhibit the piezoelectric impact are Rochelle salt and tourmaline. Rochelle salt exhibits the best piezoelectric outcome, but its applications are restricted to manufacture of microphones, headsets and loudspeakers. It can be as the Rochelle salt is mechanically the weakest and strongly influenced by dampness https://timing-components-for-con07395.thenerdsblog.com/40791137/crystal-oscillator-fundamentals-explained