can connect directly to CD players, tuners and tape recorders.
to operate effectively add a 5K potentiometer one end connected to the audio input in the middle leg of the potentiometer connected to C1 and the other end to land that is almost mandatory for this circuitoQ6 and must Q7 and Q9 pequeñosQ8 sinks should be mounted on heatsinks. (appropriate) Adjust R11 so there is no noise, adjust, adjust the current of 100 mA, check the consumption series the drain of Q8 with no input signal. the trimer (R11) is attached to the center leg connected to one of the trimer extrmos so you can vary the current.
components: Q1-Q5______BC558B
45V 100mA Low noise High gain PNP transistors
to operate effectively add a 5K potentiometer one end connected to the audio input in the middle leg of the potentiometer connected to C1 and the other end to land that is almost mandatory for this circuitoQ6 and must Q7 and Q9 pequeñosQ8 sinks should be mounted on heatsinks. (appropriate) Adjust R11 so there is no noise, adjust, adjust the current of 100 mA, check the consumption series the drain of Q8 with no input signal. the trimer (R11) is attached to the center leg connected to one of the trimer extrmos so you can vary the current.
components: Q1-Q5______BC558B
45V 100mA Low noise High gain PNP transistors
Q6_________BD140 80V 1.5A PNP Transistor
80V 1.5A NPN Transistor Q7_________BD139
Q8_________IRF530 100V 12A N-Channel Hexfet Transistor
Q9_________IRF9530 100V 10A P-Channel Hexfet Transistor
R1,R4_________47K 1/4W Resist.
R2____________4K7 1/4W Resist.
R3____________1K5 1/4W Resist.
R5__________390R 1/4W Resist.
R6__________470R 1/4W Resist.
R7___________33K 1/4W Resist.
R8__________150K 1/4W Resist.
R9___________15K 1/4W Resist.
R10__________27R 1/4W Resist.
R11_________500R 1/2W Trimmer Cermet
R12,R13,R16__10R 1/4W Resist.sR14,R15_____220R 1/4W
R17___________8R2 2W Resist.
R18____________R22 4W Resist. (wirewound)
C1___________470nF 63V Polyester Condensador
C2___________330pF 63V Polystyrene Capacitor
C3, 63V Electrolytic Capacitors C5________470μF
C4, C6, C8, 63V Polyester Capacitors C11_100nF
25V Electrolytic Capacitor C7___________100μF
C9____________10pF 63V Polystyrene Capacitor
C10____________1μF 63V Polyester Capacitor
Thanks I await your prompt response.
Note: the 5 K potentiometer is required on the circuit thanks. haaaa and tablet if possible should be amcho 6cm and 8cm long so many thanks that I restart the other a capacitor and resistor were not connected to anything because now I add the potentiometer to be input
Subject: ESS.
Student: Pedro Jose Contreras Urbina
Source: http://www.circuitosimpresos.org/2010/07/01/amplificador-de-audio-de-25w/
Thanks I await your prompt response.
Note: the 5 K potentiometer is required on the circuit thanks. haaaa and tablet if possible should be amcho 6cm and 8cm long so many thanks that I restart the other a capacitor and resistor were not connected to anything because now I add the potentiometer to be input
Subject: ESS. Student: Pedro Jose Contreras Urbina
Source: http://www.circuitosimpresos.org/2010/07/01/amplificador-de-audio-de-25w/
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