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Speaker Selection — Parallax Forums

Speaker Selection

Patrick DPatrick D Posts: 62
edited 2008-01-29 23:47 in BASIC Stamp
I was going through a box of parts and found a speaker that I bought from Radio Shack for another project (PN# 273-093).

Can I use this w/ my BS2?

(from package)
16 ohm mini speaker
rated input 0.15W
max input 0.30W
resonant freq 480Hz +/- 20%

Comments

  • Mike GreenMike Green Posts: 23,101
    edited 2008-01-29 23:47
    You could use it, but you have to be careful not to draw too much current which could damage the I/O pin you're using.· Check the Parallax Basic Manual under the TONE statement.· I don't have a copy handy, but there may be some sample schematics.· You could always just use a series resistor like 220 ohms or 330 ohms and otherwise hook the speaker up like an LED as shown in the manual.· That will get you started.· The series resistor will limit the maximum current and protect against·the small amount of back EMF (like with a relay or motor).
    ·
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