Hello, i try to understand what capasitors and resistors i need to use lm386 to amplify isd1820 signal. What is “ 104” ? It cannot be 104 farad. And is 4.7 o , 4.7 ohm?
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You asked this same thing in another thread. Please confine questions to one thread.Hello, i try to understand what capasitors and resistors i need to use lm386 to amplify isd1820 signal. What is “ 104” ? It cannot be 104 farad. And is 4.7 o , 4.7 ohm?
What would you recommend? The sound from isd1820 is already much disapointing so any suggestions there also are welcome104 is the value marking on a component.
It is not be used in a schematic diagram.
If the component is a capacitor it is shorthand for 10 x 10^4 picofarads, or 100nF or 0.1μF.
LM386 is a poor choice for a general purpose signal amplifier.
i tried the isd1820 and the sound is really low, i can barely hear it.The ISD1820 can already drive an 8 ohms 0.5W speaker, but there is no detailed datasheet showing its output power.
With a 6VDC supply, an LM386 produces only 0.2W to 0.25W in an 8 ohms speaker. With a 9VDC supply, an LM386 can produce 0.5W to 0.6W in an 8 ohms speaker. Very low loudness.
The low capacitance of the capacitors in your LM386 circuits cut low audio frequencies, producing tinny sounds.
no nothing of this has happened. I have used before this component. I know its limitations. If its wasnt with so low output then its producers wouldnt need to add to the datasheet a way to enchance the sound. Do you have an actual suggestion on some simple circuit to gain some volume?Maybe you damaged the SP+ and SP- outputs of the ISD1820 by wrongly shorting them or wrongly connection one or both to 0V.
Maybe your speaker is not 8 ohms or is too small. Maybe your speaker is not properly in a speaker enclosure.
by Jake Hertz
by Jake Hertz
by Jake Hertz