Do More

Genereal Description: STK4017 fabricated on the IMST substrate of our own originality and designed for use in intermediate-power, single-channel, voltage amplifiers. Their packages are made much more compact than those of tje Type Nos. heretofore in use,  thereby meeting the requirements for making  the set smaller and slimmer.  Circuit diagram: 25W AF Power Amp Datasheet for STK4017: Download

This is the 25W bridge audio amplifier built using single power IC TDA2005. Actually, the TDA2005 is a stereo power amplifier chip. It has two input channels and two output channel and delivers about 10W power output for each channel, since it connected in bridge mode then it will delivering up to 25W audio output. Take a note that the speaker terminals should not conected to the ground and mount the IC on the heatsink to prevent overheating.  25W Bridge Audio Amplifier with TDA2005 Circuit Diagram Parts List: R1 = 120K? R2,5,6 = 1K? R3,4 = 12? R7,8= 1? C1,5,7 = 220uF/25V C2,10,11 = 100nF C3,4 = 2.2uF/25V C6,8 = 100uF/25V C9 = 10uF/25V IC1 = LM2005M / TDA2005

25W AUDIO AMPLIFIER MOSFET IRF530-IRF9530 ELECTRONIC DIAGRAM Adjust R11 to set quiescent current at 100mA (best measured with an Avo-meter connected in series to Q8 Drain) with no input signal.     A correct grounding is very important to eliminate hum and ground loops. Connect to the same point the ground sides of R1, R4, R9, C3 to C8. Connect C11 to output ground. Then connect separately the input and output grounds to power supply ground.