Next, The filter capacitor- should have over 4700uF 50V as characteristics the standard power supply circuit that uses in normal.

Read other sites: 30 Watt Amplifier Circuit using Transistors Then, we will have the results as the DC volts + 24 volts for this circuit. Next, passing the bridge rectifier circuit and filter capacitors. So, we use the transformer that has a secondary coil is 18-0-18V at 2 amperes.

The main DC power supply of this project is + 24 volts up to 2 amperes.

Then, insert correctly the output transistor to this project.

Related: NE5532 Pinout Datasheet Dual low noise op-amp You should reduce the range of meter to lower respectively, until the lowest, with the certainty that can read really is zero.

Then, adjust the potentiometer VR5 until the voltage is zero volts.

Next, connect power to this project Observed meter needle that reverses or not, if error to must switch the test leads immediately.

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Here are a few related articles you may want to read: But you should connect the short-circuit between the input and ground before.įigure 2 Actual-size, single-sided PCB layout for the circuit.

Third, use the voltmeter set range DC Volt is 50 volts and then measures the voltage across between the output or speaker terminal compare with the ground.

Second, does not connect the power transistors Q8, Q9.

First of all, Build the PCB as Figure 2 and assemble correctly the components layout for the PCB as Figure 3.

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Then, we use both 2N3055 transistors are pair output Q8, Q9. So, the saving than the direction the pair complimentary.

In setting, the last output section is determined by forming the Quasi-Complimentary. Which, Q6 acts as pre-driver to amplifiers signal to the driver circuit that consists of Q5, Q7. Then, the signal from the collector of Q3 will pass to the base of Q6.

By using the feedback at the base of Q4 through the R16. To control the output of this circuit is zero volts. In the power amplifier circuit, you will see that the input circuit is connected to the differential amplifier type. Read also: TDA2020 OCL HI-FI Power Amplifier, 20W to 80W And, can adjust the treble sound up to +18dB at frequency 10Khz. Then, you can adjust the bass sound up to +18dB at frequency 100Hz. Which is popular extensively at this time. To begin with, the tone control section is determined as the feedback tone control type.

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