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This amplifier circuit has a power output of a small or too low at 5.8 Watt, which uses IC KA2205. The required voltage for at least 6 volts to 18 volts DC maximum. Schematics power audio amplifier with IC KA2205 Component List C1 = 1uF C2 = 100uF C3 = 47uF C4 = 1000uF C5 = 0.1uF C6 = 220uF IC1 = KA2205

POWER TRANSISTOR Power transistors have controlled turn-on and turn-off characteristics. The power transistors are mostly used in the switching mode. In fact, their applications in motor control circuits are becoming more and more popular. The transistors when used as switching elements, are operated in SATURATION REGION, resulting in a small on-state voltage drop. Power transistors are becoming a viable alternative to thyristors. When power transistors conduct an appreciable Current, the forward voltage drop is in the region of 0.3 to 0.8V. Therefore the power loss in a power transistors is lower than that of thyristors. The switching speed of modern transistors are much higher than that of thyristors and are extensively used in dc-ac and dc-dc converters, with inverse parallel connected diodes to provide bidirectional Current flow. However, the voltage and current ratings of power transistors Available at present are not as high as those of thyristors and Therefore, transistors are ...

Schematic circuit power amplifier TDA1908 , or you can use IC TDA1908A . The circuit simple and easy to make the line PCB. See circuit and technical instruction below :  The circuit above can use to the 5.1 surround sound circuit , but you have made 6 circuit and to combine to 1 .  And suitable made to center speakers. Technical information : Minimum require voltage :  6 Volts Maximum require coltage :  30 Volts Maximum Power output   :  16 Watts Minimum Power output    :   4  Watts

This is a Simple Power Pulse Using by LM350 and NE555 Circuit Diagram . This circuit can use to drive lamp,power LED,DC motor etc. Adjust R5 for output amplitude.Adjust R1 for output power . Power Pulse Circuit Diagram The LM350 is adjustable 3-terminal positive voltage regulators is capable of supplying in excess of 3A over a 1.2V to 33V output range.This circuit requires 5-15V power supply.

TDA 7482   g eneral description: The TDA7482 is an audio class-D amplifier assembled in Multiwatt15 package specially designed for high efficiency applications mainly for TV and HomeStereo sets.  TDA7482 Audio Amplifier 1 x 25W TDA 7482  features : 25W OUTPUT POWER: RL =8Ω/4Ω; THD = 10% HIGHEFFICIENCY WIDE SUPPLY VOLTAGE RANGE (UP TO±25V) SPLITSUPPLY OVERVOLTAGEPROTECTION ST-BY AND MUTEFEATURES SHORTCIRCUIT PROTECTION THERMALOVERLOADPROTECTION TDA 7482  circuit diagram : TDA7482 Audio Amplifier 1 x 25W circuit diagram TDA 7482  sterio circuit layout : TDA7482 Audio Amplifier 1 x 25W pcb layout

Desktop computer power supply - ATX type Delta Circuit diagram Click on the schematic to magnify

This is the simple circuit diagram of Dual Voltage Power Supply . It is used for Misc. application. This circuit is called regulated power supply. For this reason the main component of this circuit is Regulator IC. It also needs few components to built. The regulator 7812 is the positive voltage regulator and 7912 is the negative voltage regulator.  You can also use 7809 for 9 volt positive power supply and 7909 for negative voltage power supply. It regulates voltage from 24Volt to 12 Volt (DC). The transformer input is 110Volt to 220Volt (AC) and the output must be between 12Volt to 24Volt (AC) and current must be 500mA. In this circuit some capacitors are used as a filter for removing repole.

Description  The losses in a bridge rectifier can easily become significant when low voltages are being rectified. The voltage drop across the bridge is a good 1.5 V, which is a hefty 25% with an input voltage of 6V. The loss can be reduced by around 50% by using Schottky diodes, but it would naturally be even nicer to reduce it to practically zero. That’s possible with a synchronous rectifier. What that means is using an active switching system instead of a ‘passive’ bridge rectifier. The principle is simple: whenever the instantaneous value of the input AC voltage is greater than the rectified output voltage, a MOSFET is switched on to allow current to flow from the input to the output. As we want to have a full-wave rectifier, we need four FETs instead of four diodes, just as in a bridge rectifier. R1–R4 form a voltage divider for the rectified voltage, and R5–R8 do the same for the AC input voltage. As soon as the input voltage is a bit higher than the rectified voltage, IC1d s...

  Mono Amplifier This amplifier use IC AN7154 , this is  minimum voltage for circuit is 9 volt and maximum voltage 18 volt with dual suplly voltage. Maximum power output 20 watt with minimum impedance 4 Ohm. This circuit equipped treebel booster , to maximum performance for treebel sound out. See amplifier schematic below : Click to view enlarge Voltage : 12 Volt Output : 20 watt

A common problem when an AC mains adapter is used to power a USB device is that the voltage does not match the nominal 5 V specified by the USB standard. The circuit shown here accepts an input voltage in the range of 4-9 V and converts it into a 6-V output voltage, which is then stabilized to a clean 5-V level by a series regulator. The combined boost/buck converter used here operates on the SEPIC principle. That principle is quite similar to the operating principle of the Cuk converter, but without the disadvantage of a negative output voltage.   Circuit diagram :   Stable USB Power Supply Circuit Diagram   The circuit is built around a MAX668, which is intended to be used as a controller for boost converters. The difference between a SEPIC converter and a standard boost (step-up) converter is that the former type has an additional capacitor (in this case C2) and a second inductor (in this case, the secondary winding of transformer L1). If C2 is replaced by a wire bridge and ...

This design uses 4 diodes in a bridge to produce a fixed voltage power supply capable of supplying 35mA. All diodes (every type of diode) are zener diodes. They all break down at a particular voltage. The fact is, a power diode breaks down at 100v or 400v and its zener characteristic is not useful. The current is limited by the value of the X2 capacitors and this is 7mA for each 100n when in full-wave (as per this circuit). We have 1u capacitance. Theoretically the circuit will supply 70mA but we found it will only deliver 35mA before the output drops. The capacitors should comply with X1 or X2 class. The 10R is a safety-fuse resistor. The problem with this power supply is the "live" nature of the negative rail. When the power supply is connected as shown, the negative rail is 0.7v above neutral. If the mains is reversed, the negative rail is 340v (peak) above neutral and this will kill you as the current will flow through the diode and be lethal. You need to touch the negati...

This  is low noise power amplifier , high output power amplifier for full range speakers, but you can use the woofer speakers to this circuit .  Maximum output power 60 Watt with impedance 4 Ohms see circuit below :   Description for circuit above : Minimum Supply Voltage   : 12-Volt DC Maximum Supply Voltage  : 25-Volt DC Maximum Power Output : 60 Watts Impedance Speaker : 4 Ohm Current Voltage : 3A

Around us will be a large amount of energy scattered in space, are the RF waves emitted by TV channels, radios, cell phones, computers, etc.. What most people do not know is that we can capture the scattered energy and transform into electricity.  To capture any wave, we have to have a coil in the same resonant frequency, we can also simply capture radio signals by a common antenna and light an LED if we get a strong signal.Setup is simple. You will need an antenna too high, most likely on roof or on top of a mast and make sure that isolated and fixed. Then connect the enameled copper wire antenna and take it to the circuit. Power of the environment by using an antenna Circuit

As the amplifier circuit also uses a number of frequencies to drive the loudspeaker, the bass frequencies will be reduced. Therefore need to be plugged the bass-boost control at fedback loop amplifier, this is done to overcome the decline in quality. Graph bass can reach a maximum at +16.4 dB @ 50Hz. This circuit can be connected directly to the CD player, tuner, and tape recorders. Q3 and Q4 must be in pairs with a heatsink. Adjust the volume control at minimum position and R3 with a minimum value of resistance as well. try enabling circuit R3 da set up to read the flow of about 20 to 25mA. Wait for 15 minutes, connect the ground at J1, P1, C2, C4 C3dan. Connect also C9 at the output ground. For his series of power supply you can use the following scheme that fits perfectly with this amplifier.

This is a Simple 12 Volt / 2 A Switching Power Supply Circuit Diagram. The circuit 12 volt / 2 A switching power supply in the above scheme is not too complicated. At the output of this block provides a stable 12 V and maximum current 2A. Power supply units are quite compact and is suitable for debugging schemes, as well as a permanent resource for stationary devices, including power for the logic electronics for the home-made ​​CNC machine tools. 12 Volt / 2 A Switching Power Supply Circuit Diagram      Transformer is available in the free market and avoids the hassle of having to self-winding. The diode bridge BR 1 of any given voltage and current of 2A. All other elements in the high part of the circuit are designed by the same voltage, taking into account the mains. The scheme of 12 volt / 2 A switching power supply operates from the high voltage network, to be observed when mounting accuracy and caution when using. It is desirable to block the finished board to “pa...

This power supply is meant as an auxiliary or as a permanent power supply for all common circuits based on a stabilized DC voltage between 3 and 30V provided that the consumption does not exceed 3A. Of course this power supply unit can also be used for other purposes. Be replacing the trimmer by a potentiometer, it may even be used as an adjustable power supply unit. A good quality heatsink must be used. Circuit diagram: 3 TO 30 Volt 3 Ampere DC Power Supply Circuit Diagram Parts list: R1 = 8.2K R2 = 2.2K R3 = 680R R4 = 1K R5 = 82K R6 = 0.18R/5W C1 = 470p C2 = 100nF-63V C3 = 100nF-63V C4 = 100uF-63V C5 = 10KuF-60V D1-D6 = 6.6A Q1 = MJ3001 (Darligton) IC1 = UA723D Specifications: Overload protected Sshort-circuit stable Output current: max. 3A Output ripple voltage: 0.5mV Output voltage: adjustable from 3 to 30V, stabilized Input voltage: 9 to 30V AC (depending on the desired output voltage)

This is the Simple 5V POWER SUPPLY USING 7805 IC FROM 230V AC MAINS circuit Diagram.Almost all digital circuits are works under 5V power supply. Here we are going to discuss on How to Generate  5V from 230V A.C supply. Digital IC’s, Microcontrollers, MicroProcessors and some basic circuits are generally powered by a 5V DC voltage. By using this project, you can eliminate the need of a battery in common circuitries. The circuit is simple to construct and maintain as it includes the following parts:- COMPONENTS USED Transformer  9V/2A  1 Regulator IC  7805  1 Diodes   1N4007  4 Capacitor   470uF,50V 1            0.01uF  2 Simple 5V POWER SUPPLY USING 7805 IC FROM 230V AC MAINS Working Principle of 5V Voltage Source The circuit consisting of a 9V stepdown transformer, voltage regulator IC(7805) and some capacitors, used for filtering purpose. The figure given below shows the basic block...

This is an amplifier circuit using ic LM12 as the main amplifier. This amplifier has a 150Watt power output and has a 4 ohm impedance. These amplifiers have a classified high output power. The frequency response of 10Hz to 30KHz. Supply Voltage at least 9 Volt and 50 Volt CT. See schematic Below : Schematic High Power amplifier with LM12

sl.no Characteristics Voltage Amplifier Power Amplifier 1 Current Gain High, exceeding 100 Low 20-50 2 Collector Load High about 10KΩ Low 5-20Ω 3 Input Voltage Low, a few mV High, 2-4V 4 Collector Current Low about 1mA High exceeding 100mA 5 Power output Low High 6 Power dissipation capacity Less than 0.5W More than 0.5W 7 Output Impedence High about 10KΩ Low about 200Ω 8 Coupling Usually RC coupling Transformer or tuned circuit

This Electronic Project 10A power supply circuit s based on the ISL8200M IC which require few external components and is very easy to build but is capable to offer a high power making it useful in current-sharing DC DC power supply module for those power hungry Datacom\Telecom\Servers. 10A Power Supply IC with ISL8200M: This power supply circuit accept a wide input voltage from 3 volts up to 20 volts at 10 A . The output voltage range can be set using a simple rsistor from 0.6 volts up to 6 volts . If we need more current is very easy to obtain using th ISL200M paralleling up to 6 modules , so the maximum output current can be in that case 60A .