I used a circuit similar to that to power a loud buzzer connected to the turn signals for a customer who couldn't hear the click of the flasher. He would drive for miles with the turn signal on at times, and he got tired of his wife fussing about it!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!