The LM is a power audio amplifier for consumer applica- tions. In order to hold system cost to a minimum, gain is internally fixed at 34 dB. A unique input. 4 Aug Hello everyone! I hope you all will be absolutely fine and having fun. Today, I am going to share my knowledge about Introduction to LM The LM is a power audio amplifier for consumer applica- tion. In order to hold system cost to a minimum, gain is inter- nally fixed at 34 dB. A unique input.
|Published (Last):||27 October 2012|
|PDF File Size:||15.66 Mb|
|ePub File Size:||11.46 Mb|
|Price:||Free* [*Free Regsitration Required]|
The LM comes in lm380 8 pin package and its lm380 circuit is virtually identical to the LM except for the different pin out. Perhaps the most unique feature is that lm380 is available at any Radio Shack and can operate at voltages as low as 5 volts.
If you plan to use this IC keep all components as close as possible to the IC and lm380 certain that your power source can supply up to 1. No matter how much volume, an lm380 amp provides, there are still those who require even more. Experience lm380 shown the LM should be soldered directly to the circuit lm380 no IC socket if it is going lj380 be operated at its full lm380 2 watt output.
LM380 audio amplifier electronic project
IC’s offer many advantages including high efficiency, high gain, low standby current, low lm380 count, small size and ,of course, low cost. Lm380 all of the major IC manufacturers now offer their data sheets to be downloaded free at their web sites. This IC offers low distortion and is a real bargain compared to discrete transistors. It is little lm380 that audio lm380 IC’s have replaced discrete transistors in most consumer electronic devices.
LM W Audio Power Amplifier |
Just like regular op amps, audio amp IC’s have an lm380 and non-inverting input. This configuration will lm380 km380 a gain of Resistor R3 controls the gain and Capacitor C3 couples the lm380 to the speaker. Because of the high gain of IC audio amps, it is highly recommended to isolate them from the power supply lm380 prevent oscillations.
The type sold by Radio Shack is the LM and is the one we km380 in this circuit. There are many other audio lm380 IC’s available to us and data sheets lm380 be easily obtained by searching the world wide web. The increased gain is only used when a very low input signal is to lm380 amplified. For example, check out National Semiconductor at http: In a previous article I discussed building audio amplifiers using discrete lm380.
Output capacitor coupling is mandatory in just about all IC lm380 amp lm380.
LM audio amplifier electronic project circuit design
Back to Projects Lm80 My experiences lm380 this IC revealed that it must be heat sinked at all times due to it’s high standby lm380.
The primary advantages of lm380 LM series IC’s are higher lm380 power, very low distortion and low external parts count. It lm380 important to understand that increasing the gain does not increase the output power. It should be apparent now that audio amp IC’s have much lm380 offer us in the way of low cost audio amp circuits.
By removing R2 and connecting Lm380 across lk380 1 and 8, we can increase the lm380 to While it is possible to build good audio amplifiers from discrete transistors, they are lm380 match for lm380 many audio amp IC’s available to us. The LM comes in a 14 pin package and pins 3,4,5,10,11 and 13 are connected to ground to act as a heat sink.
While many experimenters have stayed away lm380 these little lm380 mysteries, I am going to uncover some of their secrets lm380 demonstrate how easy they are to use.
Input signals are lm380 fed lm380 the non-inverting input while the inverting input is normally tied to ground. This IC can become quite warm lm380 it’s important to get rid of excess heat through the lm380. The main advantage to this IC is its 7 watt output which is why it has found lm380 way into many inexpensive car radios.
In this circuit, R1 and C1 accomplish this task very well. The circuit in Figure 4 uses a LM IC amp and will provide up to 7 watts of output power for those who want to really experience their audio.