Electronic Circuits Diagram: 17

1500W Power Amplifier Circuit Diagram

1500W Power Amplifier Circuit Diagram
This is a very high 1500W power amplifier circuit diagram by Rod Elliott. The circuit is built using 10 pairs of power transistor MJ15024 and MJ15025 (or MJ21193/MJ21194), then it will use 20 pieces of power transistor for final amplification.

With very high power audio output, then of course it will need power supply with high power output. This amplifier require dual output power supply 130V.

1000W Power Inverter Circuit Diagram

1000W Power Inverter Circuit Diagram

This is the power inverter circuit based MOSFET RFP50N06. The inverter capable to handle loads up to 1000W, it’s depended on your power inverter transformer. The RFP50N06 Fets are rated at 50 Amps and 60 Volts. Heatsink is required for cooling the MOSFETs. You may add some MOSFETs with parallel connection to get more power. It is recommended to have a “Fuse” in the Power Line and to always have a “Load connected”, while power is being applied.

The advantages of this inverter circuit:

    Can be used with a wide range of supply voltages by using appropriate transformers.
    Can be used to deliver a wide range of output voltages by using appropriate turns ratio.
    Output Frequency is Adjustable and Stable.
    A Standard Step Down transformer (Reverse connected) can be used with Fair Results for Lower Wattages.
    With the addition of “Parallel Output Fets” and a Large Transformer, Power can be GREATLY Increased.

100W Power Inverter Notes

This circuit will provide a very stable “Square Wave” Output Voltage.

Frequency of operation is determined by a pot and is normally set to 50 or 60 Hz, Depends on where you live.

SOME “off the shelf” transformers can be used, but with Poor Results. Or you can Custom wind your own FOR BEST RESULTS.

Additional MosFets can be paralleled for higher power.

It is recommended to Have a “Fuse” in the Power Line and to always have a “Load connected”, while power is being applied.

The Fuse should be rated at 32 volts and should be aproximately 10 Amps per 100 watts of output.

The Power leads must be heavy enough wire to handle this High Current Draw!

Appropriate Heat Sinks Should be used on the RFP50N06 Fets. These Fets are rated at 50 Amps and 60 Volts.
** Other types of Mosfets can be substituted if you wish.

The LT1013 offers better drive that the LM358, but its your choice.

The Power transformer must be capable of handling the chosen wattage output. Also, Appropriate Heat Sinks are Necessary on the Mos-Fets.

Using a rebuilt Microwave transformer as shown below, it should handle about 500 watts Maximum. It requires about 18 turn Center-Tapped on the primary. To handle 500 watts would require using a 5 AWG wire. Pretty Heavy Stuff, but so is the current draw at that power.

Simplified Operation is: IC1A & IC1B, Along with IC2A & IC2B and the Transistor form a Voltage controlled Oscillator of which the frequency is adjusted with the 25K ohm pot. IC2C & IC2D are buffers, driving the Mos-Fets, out of phase of each other.

The 13 volt Zeners stabalize supply voltages and limit signals, while the 36 volt Zeners limit spikes from the transformer.

800W Audio Amplifier with MOSFET

800W Audio Amplifier with MOSFET

Here the schematic diagram of 800 watt audio power amplifier with MOSFET for final amplification.
This amplifier can be used for practically any application that requires high power, low noise, distortion and excellent sound. Examples would be Sub-woofer amp, FOH stage amplifier, One channel of a very high-powered surround sound amplifier etc.

For detail explanation about how this circuit works include the large schematic diagram, power supply schematic diagram and complete component listing,

800W Audio Amplifier circuit diagram with MOSFET

In the electrical sector, a schematic diagram is usually used to describe the design or model of equipment. Schematic diagrams are usually utilized for the maintenance and repair of electronic and electromechanical devices / units. Original schematics were made by hand, using standardized templates or pre-printed adhesive symbols, but nowadays Electrical CAD computer software is often used.

In electronic design automation, until the 1980s schematics were virtually the only formal representation for circuits. More lately, using the progress of computer system technology, other representations were introduced and specialized computer languages were developed, because with the explosive development of the complexity of electronic circuits, classic schematics are getting less practical. As an example, hardware description languages are indispensable for contemporary digital circuit design.

Power Amplifier 2000 Watt Cirxuit Diaghram

Power Amplifier 2000 Watt

Power Amplifier 2000 Watt Cirxuit Diaghram
This is linear power amplifier 2000 Watt which need advance knowledge in electronics since the schematic diagram is very complex for hand made circuit. I think you have to re-design the schematic diagram using circuit diagram software designer such as diptrace, eagle, expresspcb ect. Or just order the PCB online, they will be glad to make the PCB for you.

This kind of power amplifier circuit need high power consumption, so you need to build the power supply carefully. It need dual polarity power supply (+85, 0, -85) and of course with high DC current of about 20A.

Just need to think again if you want to build this kind of power amplifier 2000 Watt.

120W Power Amplifier + Power Supply

120W Power Amplifier

Read more http://circuitdiagram.net/120w-power-amplifier-power-supply.html

120W Power Amplifier + Power Supply
This is 120W power amplifier schematic using TO-3 package complementary transistors, NPN and PNP polarity. The well-known power transistor pair of 2N3055 and MJ2955 used in this circuit. +/- 50V symmetrical (split/dual polarity) power supply with minimum 3A electric current should be used for maximum performance.

120W Power Amplifier Part List

Transistors

    2N3055 (substitution: MJ15003 or 2N3772) : 2
    MJ2955 (substitution: MJ15004 or 2N3771) : 2
    TIP42 : 2
    TIP41 : 1
    2SC2229 or 2SC2230 or C1573 : 2
    A1015 or A872 or A733 : 2

Capacitors

    100uF/50V electrolytic capacitor: 2
    470nF (474) nonpolar polyester capacitor: 1
    100pF (101) nonpolar ceramic capacitor : 2
    470pF (471) nonpolar ceramic capacitor : 2
    10pF nonpolar ceramic capacitor : 2
    100nF (104) 100V nonpolar polyester capacitor : 2

Resistors

    0.33 Ω (5W) : 4
    10 Ω to (1W) – brown, black, black : 1
    100 Ω (1W) – brown, black, brown : 2
    33 Ω (1/4W) – orange, orange, black : 1
    150 Ω (1/4W) – brown, green, brown : 3
    10KΩ (1/4W) – brown, black, orange : 1
    1KΩ (1/4W) – brown, black, red : 1
    4.7KΩ (1W) – yellow, violet, red : 1
    68KΩ (1/4W) – blue, gray, orange : 1
    56KΩ (1/4W) – green, blue, orange : 1
    33KΩ (1/4W) – orange, orange, orange : 1
    3.3KΩ (1/4W) – orange, orange, red : 2

Diodes

    3A Diode 1N5404 : 2
    1A Diode 1N4007 : 3
    Zener diodes between 20 and 24 volts : 1

Others

    3A fuse
    small 3-pin (GP) connector
    large 6-pin connector (Molex)
    aluminum heatsink
    potentiometer of 20K if you want to add volume control

300W RMS Stereo Power Amplifier based IC TDA7294
This is the 300W RMS stereo power amplifier circuit project. This amplifier is based four pieces of power IC TDA7294. It’s mean that every single channel of the circuit uses two ICs in bridge mode. In this application, the load value must not be less than 8 Ohms.

The main advantages of this solution are the following:
– High power with low voltage.
– Considerable power, even at high load values (Up to 16 Ohm).
With a load of 8 Ohms and a power supply voltage of ± 25V, the maximum performance that can be obtained is 150 W per channel. While with 16 Ohms load, and a power supply voltage of ± 35V,

Lay out Stereo Power Amplifier based IC TDA7294

300W RMS Stereo Power Amplifier Part List

SEMI-CONDUCTORS
4 TDA 7294

RESISTORS
56K Ohms (green, blue, orange) : 8
8K2 Ohms (gray, red, red) : 3
5K1 Ohms (green, brown, red) : 14
8.2 Ohms 1W (gray, red, gold) : 4
2.7 Ohms 1W (red, purple, gold) : 4
22K Ohms (red, red, orange) : 2
1K Ohms (brown, black, red) : 4

CAPACITORS
4700 uF / 35v electrolytic capacitor : 2
22 uF / 35v electrolytic capacitor : 12
1 uF / 35v electrolytic capacitor : 4
0.1 uF / 250v polyester capacitor : 4
0.1 uF / 100v polyester capacitor : 4
0.47 uF / 100v polyester capacitor : 4
10 pF / ceramic capacitor : 4
390 pF / ceramic capacitor: 2

MISCELLANEOUS
25-amp diode bridge : 1
Diodes 1N4148 : 2
fuse holders for printed and 6 amp fuse : 4
small 3-pin connectors : 2
large 3-pin connectors : 2
small 6-pin connector : 1
18x18v to 12 Amp transformer : 1
Square mica insulation. : 4
coils of 10 coils with air core : 4
Of 1/4 inch and wire 18.

The resistance of the 12v cooler is calculated:
(15 / milliamperes of fan) = x Ohms.

Stereo Tone Control with Line In + Microphone Mixer

Stereo Tone Control with Line In + Microphone Mixer

Stereo Tone Control with Line In + Microphone Mixer

This is an active stereo tone control circuit using very well known op-amp IC of TL072. The circuit include mic pre-amp and mixer control. In this design, we have two inputs: one for line (stereo), one for microphone and has control of the three audio frequency (high/treble, medium and low/bass). It also provide balance control between right and left channel, microphone volume control, line in volume control and master volume for both line in and mic control. The circuit is powered by a regulated symmetrical power supply. The PCB layout design for both tone control and power supply is provided here, complete with component placement. Good luck.

Stereo Tone Control Component List

INTEGRATED CIRCUIT

    TL072 : 2
    TL071 : 1

RESISTORS All 1/4W

    22K ohm (red, red, orange) : 10
    10K ohm (Brown, Black, Orange) : 10
    1K ohm (brown, black, red) : 3
    100K ohm (brown, black, orange) : 3
    100 ohm (Coffee, Black, Coffee) : 4
    stereo/dual potentiometers 100K ohm : 3
    stereo/dual potentiometers 10K ohm : 2
    mono/single potentiometers 10K ohm : 2

CAPACITORS

    1uF/25V electrolytic capacitor : 4
    10uF/25V electrolytic capacitor : 1
    4.7uF/25V electrolytic capacitor : 2
    6.8nF (682) polyester capacitor : 2
    1.5nF (152) polyester capacitor : 2
    47nF (473) polyester capacitor : 2
    1nF (102) polyester capacitor : 2
    100nF (104) polyester capacitor : 4
    2200uF x 25 V electrolytic capacitor : 2
    1uF nonpolar capacitor (105) : 5

200W MOSFET Amplifier based IRFP250N

200W MOSFET Amplifier based IRFP250N

Here is the 200W MOSFET amplifier powered based on four piece of IRFP250N, they are very cheap and easy to find in the electronic market in your area. The circuit has been assembled and tested with very good performance.

This 200W MOSFET amplifier circuit designed for single or mono audio channel application. You should build two similar circuits for stereo audio application. Build one first for performance testing to ensure that this circuit really wongking well with great audio performance.

The power supply used for this circuit is a symmetrical / dual polarity type. You need 4 amperes minimum of transformer with +/- 45V output. For stereo application, use about 8 amperes, although the 5A transformer is good enough 😀 . You may use the power supply circuit design.

Here is the 200W MOSFET amplifier powered based on four piece of IRFP250N, they are very cheap and easy to find in the electronic market in your area. The circuit has been assembled and tested with very good performance.

This 200W MOSFET amplifier circuit designed for single or mono audio channel application. You should build two similar circuits for stereo audio application. Build one first for performance testing to ensure that this circuit really wongking well with great audio performance.
The power supply used for this circuit is a symmetrical / dual polarity type. You need 4 amperes minimum of transformer with +/- 45V output. For stereo application, use about 8 amperes, although the 5A transformer is good enough . You may use the power supply circuit design

Read more http://circuitdiagram.net/200w-mosfet-amplifier-based-irfp250n.html

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