>>Maybe a cheap vibrator can me made with a coil and a permanent magnet: The
>>magnet monted on a spring plate so it swings without friction and noise,
>>and driving the coil with resonant frequency? *very* cheap at high volume,
>>but time, consuming to build in small production?
>
>Yes, this sounds like it might work, but I'm not looking to design the
>thing. Does anyone know of sources for such?
>
>C. Webb


The description fits the Star Micronics buzzers, series YMB et al. But they
draw dozens of mils, too much to drive with a PIC output directly.

Reg Neale