Author Topic: Cheap dirty driving of a miniature speaker with logic gate - bad or good enough?  (Read 867 times)

0 Members and 1 Guest are viewing this topic.

Offline daqq

  • Super Contributor
  • ***
  • Posts: 1257
  • Country: sk
    • My site
Hi guys,

For a project that would benefit off a beeper indicator, I would like to use the ABMT-801-RC micro speaker ( datasheet: ). I would like to drive it from 3.3V from a single gate 74HC1G00 device, through a 10 uF coupling cap. The gate should act as an amplifier/driver so it would not be driven directly by the MCU GPIO. The MCU will provide a 1-4 kHz signal to drive it.

The speaker has a resistance of around 10 Ohms. My questions are: Is such a gate suitable for this kind of use? Will it be reliable? If not, what's the cheapest way of driving such a micro speaker?


Believe it or not, pointy haired people do exist!
+++Divide By Cucumber Error. Please Reinstall Universe And Reboot +++

Online Simon

  • Global Moderator
  • *****
  • Posts: 11250
  • Country: gb
  • Did that just blow up? No? might work after all !!
    • Simon's Electronics
how about just driving it off a small mosfet ? New stock now in of EEVblog Brymen 235.

Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo