Rangkaian Audio Amplifier 25 Watt Mosfet

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Nov 2, 2013 (4 years and 2 months ago)

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» Rangkaian Audio Amplifier 25 Watt Mosfet

Rangkaian Audio Amplifier 25 Watt Mosfet



Rangkaian Audio Amplifier 25 Watt Mosfet


Rangkaian Audio Amplifier 25
Watt Mosfet


Parts:

Kit


R1,R4_________47K 1/4W Resistors

R2____________4K7 1/4W Resistor

R3____________1K5 1/4W Resistor

R5__________390R 1/4W Resistor

R6__________470R 1/4W Resistor

R7___________33K 1/4W Resistor

R8__________150K 1/4W Resistor

R9___________15K 1/4W Resistor

R10_
_________27R 1/4W Resistor

R11_________500R 1/2W Trimmer Cermet

R12,R13,R16__10R 1/4W Resistors

R14,R15_____220R 1/4W Resistors

R17___________8R2 2W Resistor

R18____________R22 4W Resistor (wirewound)


C1___________470nF 63V Polyester Capacitor

C2_________
__330pF 63V Polystyrene Capacitor

C3,C5________470µF 63V Electrolytic Capacitors

C4,C6,C8,C11_100nF 63V Polyester Capacitors

C7___________100µF 25V Electrolytic Capacitor

C9____________10pF 63V Polystyrene Capacitor

C10____________1µF 63V Polyester Capacit
or


Q1
-
Q5______BC560C 45V 100mA Low noise High gain PNP Transistors

Q6_________BD140 80V 1.5A PNP Transistor

Q7_________BD139 80V 1.5A NPN Transistor

Q8_________IRF530 100V 14A N
-
Channel Hexfet Transistor

Q9_________IRF9530 100V 12A P
-
Channel Hexfet Transi
stor






Rangkaian Audio Amplifier 25 Watt Mosfet


Parts:


R1____________3K3 1/2W Resistor


C1___________10nF 1000V Polyester Capacitor

C2,C3______4700µF 50V Electrolytic Capacitors

C4,C5_______100nF 63V Polyester Capacitors


D1__________200V 8A Diode br
idge

D2__________5mm. Red LED


F1,F2_______3.15A Fuses with sockets


T1__________220V Primary, 25 + 25V Secondary 120VA Mains transformer


PL1_________Male Mains plug


SW1_________SPST Mains switch



Notes:


* Can be directly connected to CD players, tuner
s and tape recorders. Simply add a 10K Log
potentiometer (dual gang for stereo) and a switch to cope with the various sources you need.

* Q6 & Q7 must have a small U
-
shaped heatsink.

* Q8 & Q9 must be mounted on heatsink.

* Adjust R11 to set quiescent curr
ent 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.

* An earlier prototype of this amplifier was recently inspected and tested again after 15 years of
S
use.


Rangkaian Audio Amplifier 25 Watt Mosfet




Thanks for
reading:
Rangkaian Audio Amplifier 25 Watt Mosfet










Monday,
April 05, 2010

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» Rangkaian 150 Watt OCL Amplifier

Rangkaian 150 Watt OCL Amplifier


150 Watt OCL Power Amplifier

If you are fanatical about the use of transistors jengkol 2N3055 and MJ2955 then this circuit is th
e
answer. This OCL power amplifier circuit deliver a blasting 150 watt to a 4 Ohm speaker. The amplifier
circuit is very cheapest and can be powered from 24 to 32 V/5A dual power supply. You must try this
circuit. Its working great. Because Transisitor on
the final amplifier will be very hot then add the
aluminum finned cooler and the fan so that the transistor is not too high temperatures



Skema Rangkaian 150 Watt OCL
Am
plifier



Use a well regulated and filtered power supply.



Connect a 50K POT in series with the input as volume control if you need.Not shown in circuit
diagram


The transistor 2N3055 NPN and MJ2955 PNP are a silicon Epitaxial
-
Base Planar transistor mounte
d in
Jedec TO
-
3 metal case. It is intended for power switching circuits, series and shunt regulators, output
stages and high fidelity amplifiers.



maximum rating Transistor 2N3055 NPN and MJ2955 PNP



Collector
-
Base Voltage : 100 V



Collector
-
Emitter
Voltage: 70 V



Collector
-
Emitter Voltage: 60 V



VEBO Emitter
-
Base Voltage: 7 V



IC Collector Current: 15 A



IB Base Current: 7 A



Total Dissipation: 115 W



Storage Temperature:
-
65 to 200 oC



Tj Max. Operating Junction Temperature 200 oC




IC TDA7294 120 Watt Audio Power
Amplifier Circuit




IC TDA7294 120 Watt Audio Power Amplifier Circuit


Amplifer with IC number TDA7293 for process sound system. This amplifer was have the input
for a radio, TV, stereo or other line level device. It also has a phono input for a record player,
guitar, microphone or other un
-
amplified source. With the addition

of a low pass filter at the
input, it makes a great amp for a small subwoofer.

Parts

R : 660 Ohm 1/4 W Resistor = 2 pcs.

R : 22K 1/4 W Resistor = 5 pcs.

R : 10K 1/4 W Resistor = 1 pcs.

R : 30K 1/4 W Resistor = 1 pcs.

C : 2200uF 35V Electrolytic Capacitor

= 2 pcs.

C : 0.22uF Capacitor = 2 pcs.

C : 22uF Capacitor = 4 pcs.

C : 0.45uF Capacitor = 2 pcs.

U1,2 : TDA7294 100W DMOS AUDIO AMPLIFIER WITH MUTE/ST
-
BY

T1 : 50V Center Tapped 5 Amp Transformer

S1 : SPST 3 Amp Switch

S2 : DPDT Switch

F1 : 2 Amp Fuse

SPKR
1 : 8 Ohm 120W Speaker

MISC : Case, Knobs, Line Cord, Binding Posts Or Phono Plugs (For Input And Output),
Heatsinks For Q1 And Q2

Thanks for reading:
IC TDA7294 120 Watt Audio Power Amplifier Circuit