Low-pass RC filter using stock FET buzzer transistor for better speaker sound quality

sylvandb / gruvin9x

Automatically exported from code.google.com/p/gruvin9x

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Low-pass RC filter using stock FET buzzer transistor for better speaker sound quality #3

Closed GoogleCodeExporter closed 8 years ago

GoogleCodeExporter commented 8 years ago

It should be possible to to add a few resistors and capacitors around the stock 
9X FET beeper/buzzer driver transistor to produce cleaner (not so square) 
waveforms for audio tones. 

If not, then replacing said FET with a bipolar transistor and a simple one pole 
RC filter could be done instead.

Original issue reported on code.google.com by gru...@gmail.com on 12 Nov 2010 at 10:59

GoogleCodeExporter commented 8 years ago

Original comment by gru...@gmail.com on 15 Nov 2010 at 11:35

Changed state: New

GoogleCodeExporter commented 8 years ago

Original comment by gru...@gmail.com on 15 Nov 2010 at 11:43

Changed title: Low-pass RC filter using stock FET buzzer transistor for better speaker sound quality

GoogleCodeExporter commented 8 years ago

Original comment by gru...@gmail.com on 18 Nov 2010 at 5:03

Changed state: Accepted

GoogleCodeExporter commented 8 years ago

Original comment by gru...@gmail.com on 21 Dec 2010 at 8:32

Changed state: New

GoogleCodeExporter commented 8 years ago

Superseded by V3+ PCB, using hardware timers for "beeps" etc.

Original comment by gru...@gmail.com on 28 Jun 2011 at 5:56

Changed state: Invalid