trying to make LM386 work with different capacitors?

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[匿名]

2010-06-15 6:50 pm

Heres the schematic but the problem is that it says I need a 250uF and a 0.05uF
I was wondering if it is possible to use a capacitor with XmF amount of capacitance if so what would you reccomend I use since all I have are capacitors in the mF range of capacitance
Thanks in advance

更新1:

http://freecircuitdiagram.com/wp-content/uploads/2008/08/amplifier_lm386.gif

更新2:

thanks guys

回答 (2)

billrussell42

2010-06-15 6:57 pm

✔ 最佳答案

1 mF = 1000µF

note that many manufacturers (incorrectly) use mF to indicate µF. So if you have a cap labeled 10 mF, it is probably 10µF

The 0.05µF, which is 50 nF, should not be changed in value.
The 250 µF cap determines the low frequency cutoff. A smaller value will cause you to lose some lower frequencies, in other words.

.

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[匿名]

2010-06-16 2:09 am

I guess the m may not be representing "mili" (one thousandth). Capacitors are rarely expressed in units of one thousandth of a Farad. They are usually expressed in micro-Farad even though it may have three or more zeros following. Supercap uses F as capacitance unit.

In the early days of ham radio, capacitance is sometimes expressed in units of MFD, which also stands for micro-Farad.

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