tubbytwo Posted October 16, 2005 Report Share Posted October 16, 2005 I'm using an LM386N in a simple amplifier and am using a 200uF cap parallel to the battery, before the switch, for noise supression. Should the cap (with no leakage) run the battery down in a week? Quote Link to comment Share on other sites More sharing options...
Guest Alun Posted October 16, 2005 Report Share Posted October 16, 2005 I'm using an LM386N in a simple amplifier and am using a 200uF cap parallel to the battery, before the switch, for noise supression.That's not why it's used, the 200uf capacitor is used to improve the transient response which is required to produce low frequencies.Should the cap (with no leakage) run the battery down in a week?Well there will be some leakage so it will drain the battery to some extent which will be deturmined by the leakage current of the capacitor and the voltage and capacity of the battery. To avoid this your best bet is to put the switch before the capacitor so it's disconnected when it's not needed so it can't drain the battery. Quote Link to comment Share on other sites More sharing options...
audioguru Posted October 17, 2005 Report Share Posted October 17, 2005 Sure the battery makes a lot of noise. It is screaming,"low-batt, low-batt, low-batt, low-batt"as loudly as it can. ;D[move] ;D ;D ;D ;D ::) Quote Link to comment Share on other sites More sharing options...
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