Full of the joys of becoming a sonic toothbrush owner I thought I compare my posh Ordo sonic toothbrush that claims 40,000 pulses a minute with my wife’s clearly inferior Philips that only manages a paltry 31,000 pulses a minute.
Oddly they both *sound* exactly the same. When I use my “spectroid” spectrum analyser app on my phone the predominant frequency for both is exactly the same, namely 264 Hz, namely 15,840 pulses a minute.
I guess this is like battery suppliers just making figures up because they know that buyers will be impressed by bigger numbers and aren’t likely to check. It seems likely to me that sonic toothbrushes are all using the same motors and frequency controlling chips. At least mine does have a significantly bigger battery that could potentially come in handy sometime.
I’m tempted to write to Ordo and ask where my missing pulses are. ;-)
Tim