LM380 | Electronic Project Circuits

Posts Tagged ‘LM380’

Simple megaphone by LM380

Megaphone small lightweight portable size, 5-watt sound for your use at any time. Neck pain because it does not require voice than usual.
Operation of the circuit. When you press the switch circuit S1 is working but no sound came out. When the audio signal to MIC1, a condenser microphone.
This allows audio signals are converted to electrical signals sent to the VR1.Adjust the force acting on C1 of the input signal that serves to expand the filter before the IC1 LM380.Amplifier IC, the output will come out of Pin 8 of IC1 through the filter C5. Was used to drive the speakers.In addition, the R1 and R4 to forward shielding.

Be the first to comment - What do you think? Posted by admin - September 28, 2010 at 1:44 am

Categories: Pre Amplifier Tags: condenser mic circuit, LM380, megaphone circuit

Small IC Amplifier 2 watt using LM380

This be IC Amplifier circuit 2 Watt size by using integrated circuit the circuit amplify to model to is inexpensive number LM380 – 14 sizes are leg. It will give power to electricity enough work , for the project of small-sized stereo ,and seeking dot lose of the stereo. It is OTL Amplifier. The Pin 3,4,5,10,11 legs and 12 soldered directly with copper side of PCB. Which use replace Heat sink with. Detail more see in circuit.

Be the first to comment - What do you think? Posted by admin - August 17, 2009 at 4:34 am

Categories: Power Amplifier Tags: Amplifier ic, LM380, small audio amp

Water Sensor Alarm using LM380

This be Water Sensor Alarm Circuit for warn the water level , by when sensor point touch the water. The circuit have a voice loud warn hear immediately. By this circuit uses the integrated circuit LM380 , usual use be power amplifier IC the small-sized , seek buy easy , be usable not difficult. For friends loudspeaker choose use 8 ohm small-sized all right. For power supply source 9V sizes arrive at 12V all right. The detail is other , see in the circuit better yes.