Class AB Amplifier | Electronic Project Circuits

Posts Tagged ‘Class AB Amplifier’

Amplifier ic 18W using HA13118

IC amplifier 18 watt circuit is an IC number HA13118 Hitachi Hard. That the IC will be integrated amplifiers, class AB. And this cycle is to use a bridge circuit. As a result, growth rates up to 55 dB. And pressure from 8-18 volt the current 1-2 amps, with less than 0.2% distortion at 1W. And response. frequencies from 30 Hz-30 kHz.
When entering the power supply circuit, and paid into the audio input. The audio is through VR1 adjusts the level of the audio signal. And pass the C1 coupling signal. The C2 eliminate the interference. From the audio signal to be sent through to the input pin on pin 3 of IC1. That this circuit to circuit in the form of bridge circuits or extension of the left navigation. And right channels together, to get a higher watt power. The observations from the pin 15 which is the output of left channel speakers are connected to one side. And the other side of the speakers are connected to the output of pin 8, which is the output of the right. The C7 and C8 acting feedback signal to the circuit’s frequency response is better. The C9, C10, R1 and R2 will serve removed the devices. And C11, C12 serve to filter the light properly to prevent any noise shock.

Be the first to comment - What do you think? Posted by admin - November 16, 2010 at 9:38 am

Categories: Power Amplifier Tags: Amplifier ic, Class AB Amplifier, Hi-Fi Audio amplifier

40 Watt Audio power Amplifier by LM3876

This Circuit is based on the LM3876. A 11-pin plastic package IC with high performance audio power amplifier, an output mute function which can be used to eliminate switch-on and switch-off “thumps” to the loudspeaker load. It is capable of delivering 40W continuously into 8ohm load, and is fully protected using established techniques. The output stage is protected against short circuit to ground or either supply rail. Protection against transients from inductive loads is also provided at the output stage via internal clamp diodes. [...]
Source: http://www.next.gr/inside-circuits/40-Watt-Audio-power-Amplifier-LM3876-l5875.html

Be the first to comment - What do you think? Posted by admin - November 11, 2008 at 4:28 am

Categories: Power Amplifier Tags: Class AB Amplifier, LM3876

The multi-purpose Amplifier using TDA2030

This The multi-purpose Amplifier using TDA2030. It is have power 8 watt (RMS) at 8 ohm loudspeakers. It is have low noise be valuable THD (Total harmonic distortion) 0.1% , When friends use Power supply Voltage Source 28 Volt at 4 ohm loudspeakers have output power 12Watt. But be high class the noise increases to are 2 times. Besides still three be usable with Volt supply about 9Volt , but there is the electric power is down respectively. The VR1 use for Volume popularity level of sound signal. By if a friend can’t seek 22K values use 50K values can replace. For other detail about the integrated circuit TDA2030 and other , friends see in the circuit better yes.