hwali.blogg.se - Pengganti ic lm386

It’s a weird circuit I’ve been toying with this little ic’s in the pursue of more power, and did a bridge amp which sounds right with the correct speakers I used 8″ 8 ohm sensitive speakers ( big magnet) and sounded amazingly loud for the size of the devices with smaller ones the sound is plain deceiving the first time I tried the circuit was with 8″ 25 ohm from an intercom and the loudness is unbeileibely loud. TDA2822 stereo amplifier circuit with PCB & datasheet.

TDA7052 amplifier | Low voltage 3V, 5V | 1 W BTL.

Here are a few related posts you may find helpful, too: The actual size of single-side PCB layout. However, if you want to use PCB layout see below. This circuit use can build on the Universal PCB. How to buildsįirst of all, find all parts as the list in the circuit diagram. TDA2030 Stereo Amplifier with PCB The parts you will need But it was a combination of all the 4 watts.

We will see using 3 ICs each unit is 1 watt.

At the same times, IC2 and IC3 will work together, too.

Both IC1 and IC2 work together to increase the sound output to the loudspeaker, in the left channel.

To give power up to 700mW to 1W (from datasheet).

Three IC1, IC2, and IC3 are the heart of the circuit, each IC includes resistors and capacitors connected with the appropriate values.

Then, enter audio signals into the input.Let me explain why it works in simple ways. In Figure 3 is fully of LM386 stereo circuit, 2 watts.įigure 3: LM386 stereo amplifier in bridge 2 watts If we can get LM386 to build a stereo amplifier with bridge mode. It is a short circuit until both amplifiers run too much power. The total voltage is both batteries.ĭo not connect the output together. Imagine, it is similar we connect both batteries, different polarity. But amplifier 2 works inverting phase of amplifier 1. Some may wonder why bridge amplifier is high power than normal?īoth amplifiers are the same gain. The sound from the speakers in Figure 2 is 2 times of Figure 1. And can provide high power magnification.įigure 2: Basis of BTL- Bridge amplifier model Advantage, not require the high voltage power supply. Some called the BTL model ( Bridge output Transformerless). Sure its power is higher loud than the first model. You begin interested in Figure 2, right? We called a bridge amplifier form. Figure 2- The gain is as much as 4 times.Figure 1-The gain is about 2 times only.What the difference is between Figure1 and Figure 2? We add the amplifier 2 into the amplifier section 2. If an input signal is 1 volt, the output equals:

And, suppose we set the gain of a power amplifier is about 2 times.