Audio. - This is electronic circuit schematic for you who want to build by your self classroom microphone system based on IC LM380 like in Figure 1 below. In this circuit schematic the basic component used is LM380 IC.
In here we will give you global description about Classroom Microphone System using LM380 IC and then we will give you link to continue your reading from original source as external website.
In here we will give you global description about Classroom Microphone System using LM380 IC and then we will give you link to continue your reading from original source as external website.
Circuit Schematic
 |
| Figure 1. Circuit schematic of Classroom Microphone System using LM380 IC (Source: www.electroschematics.com) |
Component Part
- LM380 IC
- condenser Mic
- Resistor
- Capacitor
- Transistor
- Variable resistor
- Speaker
- Power supply
Description
Circuit schematic like in Figure 1 above is Circuit Schematic Classroom Microphone System using LM380 IC. Electroschematics site describe that This audio amplifier circuit is useful in classrooms to reduce the strain of lecturing ,if the surrounding environment is noisy. It uses the power amplifier IC LM380 that gives 2 watts output which is sufficient in a confined area. The amplifier is portable and the whole circuit and the battery can be enclosed in the Speaker box itself.
collar microphone The circuit uses a preamplifier stage around NPN transistor BC 548 and a power amplifier around LM380.An external Collar MIC can be given to the input using an audio jack .The voice signals are amplified by T1 and fed to IC1 input through the volume control VR. Capacitor C3 reduce the undesirable howling from the speaker.
LM380 is the general purpose audio amplifier and its gain is internally fixed at 34 dB. Its output is short circuit proof with internal thermal limiting. The IC works between 5 to 22 volts DC and is dual in line version.
collar microphone The circuit uses a preamplifier stage around NPN transistor BC 548 and a power amplifier around LM380.An external Collar MIC can be given to the input using an audio jack .The voice signals are amplified by T1 and fed to IC1 input through the volume control VR. Capacitor C3 reduce the undesirable howling from the speaker.
LM380 is the general purpose audio amplifier and its gain is internally fixed at 34 dB. Its output is short circuit proof with internal thermal limiting. The IC works between 5 to 22 volts DC and is dual in line version.
And now you can read more you knowledge about Circuit Schematic Classroom Microphone System using LM380 IC from the original source article using link [here].
Thank you for your coming here in Electronic Index blog, we hope the article above will help you to know more about your an electronic circuit schematic design and simulation and other. Please comment here when you want to share and other. Thank you.
0 comments:
Post a Comment