I would like to turn on an active buzzer TMB12A05 using the decimal place output channel of a TM1638 display driver that is designed to drive LEDs using a PWM signal.
I considered using a passive buzzer but then the sound would vary dependent on the brightness of the display, plus the buzzer likely requires more current than an LED and may damage the TM1638 so i went off the idea.
Would this circuit activate the buzzer correctly, and if so, how would i calculate the capacitance required for C2 to hole Q1 on for the duration the PWM signal is off.
If the buzzer continued to sound for a few milliseconds or so after TM1-SEG10 was deactivated it wouldn't be a any bother.
Am I barking up the wrong tree or is this feasible?
I am struggling to test this before paying to print the circuit since to my knowledge there is no through hole equivalent of a TM1638 and the pins are to small to see never mind solder.