11 discussions on ElectronDepot about the National Semiconductor LM386: what owners asked, what went wrong, and what fixed it.
Kann sein, dass es das schon fertig gibt. Dann bitte ich um entsprechende Tipps. Im Netz wird man je nach Fragestellung erschlagen mit Info oder man kriegt gar nichts. Das macht's nicht leichter, das Richtige zu finden, weshalb ich mich...
Use two bridged to drive say a little PCB-mount 2k - 8 ohm audio transformer "backwards" to charge a HV capacitor, current feedback from each side of the "primary" inductance keeps the drive current waveform from going all sloppy,...
Hello!I've breadboarded a circuit out of Forrest Mim's _Getting_Started_....Turn your study guides to page 107, or click the following link:Pretty simple, not a whole lot to mess up there, and we all know that allthe circuits in the Mims...
I have a LM386 that oscillates when the volume is turned up too far.It's operating with the default gain of 20 and there is a RC on theoutput as recommended in the app notes (10 ohms in series with .05uF).The oscillations will stop if I add...
..Anybody got a favorite audio power amp chip? Single 12 volt supply?4 ohm speaker? Bulletproof? Bandwidth in excess of 3 kHz useless?Thanks,Jim
I'll need some volume - enough for people who are supposed to be payingattention to hear a beep in a mildly noisy situation from about 40 feet.Hi-fi not necessary; simple, efficient (battery supply) and low parts countis good. The circuit...