Amplifier Transistor Board. The main function of a transistor as an amplifier is to enhance the input signal without changing much. The dc bias voltage applied to the emitter base junction makes it remain in forward biased condition.
I ve made a couple of these. The dc bias voltage applied to the emitter base junction makes it remain in forward biased condition. When we consider this particular tda2030 ic based amplifier with an output transistor circuit output wattage gets multiplied.
It conducts for 180 degrees of the cycle.
It is a very good design to assemble easy to build from your board to the acquisition of components the output transistors are the complementar 2sc5200 and 2sa1943 relatively cheap and with very good result. I found the original schematic online then modified it because i did not have one of the parts the original plan calls for. When we consider this particular tda2030 ic based amplifier with an output transistor circuit output wattage gets multiplied. This circuit saving on battery current which is quite low with middle volume rising to 25 30ma as a volume is increased.
