A tda2030 based amplifier produces up to 40 watts of power, but here are going to make a transistor-based tda2030 amplifier project, which also generates a power of 50 watts but this particular circuit is much different from our normal amplifier types.
The main specialty of this circuit is that the push-pull amplifier circuit is combined with it, after the first stage of amplification by tda2030 ICs, one or two stages of push-pull transistor amplification are done at the circuit and an extra bit of power generation is happened at the circuit due to this process.
Tda2030 with transistor
Tda2030 with transistor delivers more power because in normal case tda2030 amplifier IC deliver 14 watts of output in its operation, an increase in amplifier stages will result besides of 14 watts of power into the circuit.
When we use a transistor with tda2030 will make an extra bit of amplification, we can see in the circuit diagram, after the amplification of tda2030, the output is directly connected to the two-transistor, which we call a push-pull amplifier.
A combination of PNP-NPN transistors is called the push- pull amplifier, TIP41 and tip42 is the transistor we used in this circuit.
Tda2030 transistor amplifier – Single power supply
The circuit we explain in this article is single power-based tda2030 amplifier, single power supply means, it had only +24v supply and ground.
Tda2030 with transistor Circuit explanation
When an audio signal reaches the input of the circuit, the c3 capacitor blocks DC voltage incoming and the signal reaches tda2030 IC.
Input components like R7, R6 resistors, and C2 capacitor will act as a voltage divider in the circuit, they take voltage from the power supply and R5 resistor works as the reference voltage setup.
After the production of output at pin4, R3, R4 resistors, and C1 capacitor act as the negative feedback element.
Completing this section we have a minimal amplified signal, but this is not enough, so next is the important stage of amplification.
In the circuit, we have an R1 resistor with a Q1 transistor and an R2 resistor with a Q2 transistor, so both these resistors are been provided a transistor is to make biasing voltage exceeding.
From each side current flow has happened into R1 and R2 resistor, then the voltage reaches the level of transistor biasing, both transistors Q1 and Q2 start conduction.
Push-pull transistor amplifier works alternatively and produces higher output power than normal.
Boosting power output is happened due to an increase in current at the circuit, when we calculate the power, it is the product of voltage and current, in the light of this extra power amplification is done with this circuit.