LM386 provides adjustable gain (a volume changing button) which helps to adjust amplification factor. The circuit provided is tested and can be easily implemented. We will simulate the LM386 audio amplifier circuit using proteus simulation software. PARTS LIST OF LOW POWER AUDIO AMPLIFIER USING LM386 Resistors (all ¼-watt, ± 5% Carbon)Ĭ 1 = 220 ♟, 25V (Electrolytic Capacitor)Ĭ 2 = 3. LM386 is widely used for audio amplifier as it is specifically designed for low power applications. Because using of IC base makes easier to replacing of IC and it also protects IC from destroying while solder.
Mounting of component on PCB should be done carefully and remember always use IC base. Component side PCB layout and solder side PCB layout for figure 1 is shown in figure 2 and figure 3 respectively. For better working performance, you should use the components listed in parts list. Once you understand the circuit diagram and operating principle of low power audio amplifier, it becomes very easy to implement in reality. Construction of Low Power Audio Amplifier Using LM386 The pitch of frequency response in the audio system can be increased by replacing C 4 with high value capacitor. Thus, produced output of IC 1 is collected from the pin 5 and then passed towards the loudspeaker via electrolytic capacitor C 4. For maximum gain of 200 (46 dB), a single capacitor needs to be placed in between pins 1 and 8 using the switch SW 1 as portrayed in figure.1. If playback doesnt begin shortly, try restarting your device.
#LM386 PROJECTS CODE#
Totally standard Audiuno code with output direct to a PC Speaker using the LM386 Amplifier circuit shown in this post. To extend its versatility and allow the user to obtain any gain value ranging from 20-200, a separate combination of resistor and capacitor is applied externally at pins 1 and 8. The Auduino is one of the best sounding Arduino Audio projects, it is also the easiest to build requiring only five potentiometers. So as to keep low count on the external part, gain parameter of IC 1 is initially set to 20. IC 1 intakes inputs from multiple audio sources and audio mixer via pin 3 after passing through potmeter VR 1 used as a volume control.
The low power audio amplifier used in this project is fed with an external +12V DC supply through pin 6. However, if required one can replace the low-power amplifier with high-power ones. Gain LM386 Audio Amplifier Amplitude Module Board with Adjustable Resistance Control Potentiometer for Arduino Raspberry Pi or Musical Projects(Pack of. It is a must to use IC LM386 (IC 1) along with that amplifier.
The circuit diagram of low power audio amplifier is shown in figure 1.
0 kommentar(er)
