24V, 2A Power Supply Circuit for 30w Power Amplifier

24V, 2A Power Supply Circuit

we can use this 24V, 2A Power Supply Circuit for any circuit and can change voltage output as you need. And this circuit has a few parts and easy to construct. We need to use a 24V 2A power supply circuit for a 30w power amplifier. In the circuit is a fixed DC regulator circuit. Thus, your amplifier has very quality sound more. When the load-use many currents.

 

24V, 2A Power Supply Circuit for 30w Power Amplifier

Parts Required for 24V, 2A Power Supply Circuit

Q1 = TIP122 or simillar, 45V 4A NPN Transistor, Quantity: 1
D1-D4 = 1N5407___1000V 3A Rectifier Diodes, Quantity: 4
ZD1 = 12V 1W___ Zener Diodes, Quantity: 1
ZD2 = 13V 1W___ Zener Diodes, Quantity: 1
R1 = 1K, 0.5W Resistors tolerance: 5%, Quantity: 1
R2 = 2.2K, 0.5W Resistors tolerance: 5%, Quantity: 1
C1 = 4700µF 63V,Electrolytic Capacitors, Quantity: 1
C2 = 220µF 50V,Electrolytic Capacitors, Quantity: 1
C2,C4 = 220µF 50V,Electrolytic Capacitors, Quantity: 2
C3 = 0.1µF 50V, Ceramic Capacitors, Quantity: 1
LED1 = Red LED, 5 mm, Quantity: 1
T1 = 230V AC primary to 24V,3A secondary transformer, Quantity: 1

Transistor Audio Amplifier Circuit | Electronic Circuit Design by 4 Transistors

Transistor Audio Amplifier Circuit

This is a 4-transistors complementary push-pull amplifier, which is Transistor Audio Amplifier Circuit, shows the basics of audio amplifier circuit design. This transistor amplifier circuit saving on battery current, which is quite low with middle volume, rising to 25 -30mA as a volume is increased.

 

Transistor Audio Amplifier Circuit

This Transistor Audio Amplifier Circuit gives us a 250 mW amplifier, enough to drive a loudspeaker to the same volume as a mobile phone or MP3 player. The input must be about 100-500 mV to drive amplifier fully.  Previously, you may like LM386 amplifier circuit. But you may also like this circuit as well.

 

Parts Required for Transistor Audio Amplifier Circuit

First of all, You need all parts below
Q1,Q3 = BC547 or equivalent, 45V 100mA NPN Transistor,Quantity: 2
Q2,Q4 = BC557 or equivalent, 45V 100mA PNP Transistor,Quantity: 2
R1 = 56K, 1/4W Resistors tolerance: 5%,Quantity: 1
R2 = 100K, 1/4W Resistors tolerance: 5%,Quantity: 1
R3 = 33K, 1/4W Resistors tolerance: 5%,Quantity: 1
R4 = 470 ohms, 1/4W Resistors tolerance: 5%,Quantity: 1
R5 = 270 ohms, 1/4W Resistors tolerance: 5%,Quantity: 1
R6 = 1.5K, 1/4W Resistors tolerance: 5%,Quantity: 1
R7 = 10K, 1/4W Resistors tolerance: 5%,Quantity: 1
C1 = 10µF 25V,Electrolytic Capacitors,Quantity: 1
C2 = 1µF 25V,Electrolytic Capacitors,Quantity: 1
C3 = 100µF 25V,Electrolytic Capacitors,Quantity: 1
B1 = 9-volt batteries, Quantity: 1.
SP1 = 8 ohms 0.25” Speaker

10 Minute Timer Circuit using IC NE555

10 Minute Timer Circuit

10 Minute Timer Circuit using IC NE555 Whenever you need to get an alarm or intimation after ten minutes, the circuit is shown below can be used. The circuit is nothing but a monostable multivibrator based on IC NE 555. Whenever you press the reset push button the green LED D1 glows after 10 minutes.

 

10 Minute timer circuit using IC NE555

Notes for  10 Minute Timer Circuit using IC NE555

Assemble the circuit on a good quality PCB or common board.
The time duration can be set by varying the POT R5.
The switch S1 can be a push button switch.
The IC1 must be mounted on an IC base

2 Channel Mic Mixer Circuit Diagram

Mic Mixer Circuit Diagram

2 Channel Mic Mixer Circuit Diagram is designed for handling high impedance dynamic microphones. Transistor Q1 can be any general purpose PNP transistor like BC177 or BC157B. Resistor R5 biases the transistor while R3 and R4 provide channel isolation.

 

2 Channel Mic Mixer Circuit Diagram

However, this 2 Channel Mic Mixer Circuit Diagram better the transistor quality better the performance.  C1 and C2 perform the job of input coupling and DC isolation while C4 is the output DC decoupling capacitor. Resistors R1 and R2 can be used for the level control of input signals.

Power Saving Relay Driver Circuit for Microcontroller

Power Saving Relay Driver Circuit Diagram

Power Saving Relay Driver Circuit for Microcontroller, the switching activity is performed by a relay, which activates an external load. Not suitable for battery power applications utilized by the relay. Here is a simple solution that uses fewer parts to conserve significant energy.

 

Power Saving Relay Driver Circuit for Microcontroller

There are several factors in taking a particular design approach for Power Saving Relay Driver Circuit for Microcontroller, and they are not always independent. Some of the considerations when designing drivers for inductive loads are size, cost, switching speed, reliability, power consumption and heat. Inductive loads like relays or solenoids are different from simple resistive or capacitive loads in that they need a certain power to energize the load, but once energized the applied power can be reduced and the load will remain activated. An added benefit of lower current is that it takes less time for the load to de-activate.

 

Automatic changeover Switch circuit using IC LTC4412

Automatic changeover circuit

Automatic Changeover Switch using IC LTC4412 from Linear Technologies. This Automatic changeover circuit using IC LTC4412 can be used for the automatic switchover of a load between a battery and a wall adapter.LTC4412 controls an external P-channel MOSFET to create a near ideal diode function for power switch over and load sharing.

 

Automatic changeover Switch circuit

This makes the LT4412 an ideal replacement for power supply ORing diodes. A wide range of MOSFETs can be driven using the IC and this gives much flexibility in terms of load current. The Automatic changeover Switch circuit also has a bunch of good features like reverse battery protection, a manual control input, MOSFET gate protection clamp etc.

 

6 to 15V DC to DC converter Circuit using LM2585 IC

6 to 15V DC to DC converter Circuit

6V to 15V DC to DC converter circuit using LM2585 is very efficient. LM2585 is a monolithic integrated voltage converter IC that can be used in various applications like flyback converters, boost converters, forward converters, multiple output converters etc. The circuit requires a minimum number of external components and the LM2585 IC can source up to 3A output current. LM2585 IC requires a heatsink

 

6 to 15V DC to DC converter ckt using LM2585

Here the IC is wired as a boost converter where resistors R1 and R2 are used to set the output voltage.T he junction of R1 and R2 is connected to the feedback pin of IC1. Capacitor C4 is the input filter while capacitor C1 the filter for output. The network comprising of resistor R1 and capacitor C2 is meant for frequency compensation. Inductor L1 stores the energy for acquiring boost conversion.

MSK5012 10A Adjustable Voltage Regulator Circuit

MSK5012 10A Adjustable Voltage Regulator

The MSK5012 voltage regulator output is fully programmable through the use of two external resistors. The regulator has a very low dropout voltage(0.45v @10A  )due to the usage of MOSFET with very low Rds (ON) as the internal series pass element. Ultra low dropout voltage specifications are realized due to the unique output configuration which uses an extremely low Rds(on) MOSFET as a pass element. MSK 5012 10A Adjustable Voltage Regulator Dropout voltages of 0.45V at ten amps are typical in this configuration which drives efficiency up and power dissipation down. Accuracy is guaranteed with a ±1% initial output voltage tolerance that only varies ±2% with temperature.

 

MSK5012 10A Adjustable Voltage Regulator Circuit

MSK5012 10A Adjustable Voltage Regulator a typical application of MSK5012 is high-efficiency linear regulators, constant voltage/current regulators, system power supplies etc. A heat sink with thermal resistance not more than 2.40 oC/W must be fitted to the MSK5012

MSK 5012 FEATURES:

Extremely Low Dropout Voltage 0.45V @ 10 Amps

Output Voltage Adjustable from +1.30V to +36V

Low External Component Count

Electrically Isolated Case

Low Quiescent Current

Output Current to 10 Amps

1 Watt Audio Amplifier Circuit using 7905 IC

1 Watt Audio Amplifier Circuit using 7905 IC

A simple stereo 1 Watt Audio Amplifier Circuit using 7905 IC is built around two 7905 negative-voltage regulators (IC1 and IC2) and a few discrete components. The 1 Watt Audio Amplifier Circuit will also work with other 79XX regulators if the appropriate power supply is used. Regulator IC 7905 works as an amplifier for the voltages applied to common pin2 (Ground or GND). Also check the LM317 audio amplifier, another interesting circuit.

 

1 Watt Audio Amplifier Circuit using 7905 IC

The minimal voltage drop over the standard 7905 IC is around 2V and it depends on the output current. Feedback resistors in the IC set the gain of the channel internally. The amplifier is a class-A audio amplifier. The minimal applicable value of R3 for the regulator 7905 is 8.2 to 10 ohms per 5W.

Stereo preamplifier tone control Circuit with TDA1524 IC

Stereo preamplifier tone control Circuit

Here is the Stereo preamplifier tone control Circuit with TDA1524 IC which is an excellent stereo preamplifier with tone control using the IC Stereo preamplifier tone control Circuit with TDA1524 IC from Phillips. The TDA1524 IC requires very few external components, has very low noise and has a wide power supply voltage range. POTs R1 to R4 can be used for controlling the volume, balance, bass, and treble respectively. LED is D1 is a power ON indicator and R1o is its current limiting resistor.

 

Stereo preamplifier tone control Circuit

Assemble the circuit on a good quality PCB.
Switch S2 is the ON/OFF switch.
Switch S1 can be used to select linear or contour mode.
Supply voltage can be anything between 8 to 16V.Here I used 12V DC

Multi-channel audio mixer circuit using LM3900 IC

Multi-channel audio mixer circuit

Multi-channel audio mixer circuit using LM3900 series amplifiers consist of four independent and internally compensated amplifiers that are designed for single and wide power supply voltage. These amplifiers provide a wide range of voltage inputs and very good response for all audio frequencies. They also provide a large output Range.

 

Multi-channel audio mixer circuit using LM3900 IC

Multi-channel audio mixer circuit using LM3900 quad amplifier is given above. The circuit consists of 4 channel quad amplifier. Two mic audio inputs and two direct line inputs are available in this circuit. By adding the same circuit parallel with this, you can increase the number of inputs according to the applications. Each input is connected to the inverting terminal of LM3900 IC.

The built-in amplifier of each section amplifies every audio input separately and is fed to the output terminals. The output terminal from each channel is connected to a single output line with a resistance not greater than 680K and produces a mixed audio at the output with very low noise. This audio mixer circuit doesn’t use a low impedance input to mix ideal sources. Capacitors C1 to C4 are the decoupling capacitors for the corresponding channels. C5 is the output decoupling capacitor.

Wireless Headphones Transmitter Circuit

Wireless Earphones Transmitter Circuit

This wireless headphones transmitter circuit provides a quality reception over 2 meters. The oscillator frequency is between 1750KHz and 3500KHz and for an antenna, we use a ferrite bar. IC1 amplifies the audio signal and TC1 is a buffer. D1 signals that the transmitter is on and is a voltage stabilizer for the oscillator for wireless earphones.

 

Wireless Headphones Transmitter Circuit

In Wireless Headphones Transmitter Circuit, L1 is a toroidal core T50-2 with 80 turns, 0.2mm Ø. L2 requires a 10-20cm ferrite bar, L2a has 3 turns, 0.6mm Ø coiled at ground end of L2b which has 30 turns, 0.5mm Ø.
The current consumption of the wireless transmitter is <= 150mA and is to be used with this wireless headphones receiver.

40W amplifier Circuit using TDA1514 IC

40W amplifier Circuit

40W amplifier Circuit using TDA1514 IC, Many electronic circuits dealing with audio amplifier circuits have been published here. This is just another one and here we use the TDA 1514 high-performance hi-fi amplifier from Philips. The IC has a bunch of useful features like thermal protection, mute-standby facility, low harmonic distortion etc. The amplifier operates from a dual +25/-25 V DC power supply and can deliver 40Watts output power to an 8 ohm speaker.

 

40W amplifier Circuit using TDA1514 IC

The audio signal to be amplified is fed to pin 1 of the IC and the capacitor C2 acts as a DC de-coupler. The resistors R3 and R4 determine the closed loop gain and it can be varied between 20 and 64 dB. Resistor R2 and capacitor C4 form a Zobel network which corrects the loudspeaker impedance and improves the frequency response.

Resistors R7, R6, and capacitor C5 are the boot-strap elements. If bootstrapping is not needed then these components can be omitted and the pin7 can be connected to pin 6, but the output power will be reduced by some 10%. R1 is the input bias resistor and it has an effect on the input impedance.

30 Watts Audio amplifier circuit using TDA2040 IC

Audio amplifier circuit using TDA2040 IC

30 watts audio amplifier circuit using TDA2040 IC, is a Class AB monolithic integrated audio amplifier available in Pentawatt package. The IC has low harmonic distortion, a low crossover distortion and has a built-in circuitry for short circuit protection.

 

30 Watts Audio amplifier circuit using TDA2040 IC

30 Watts Audio amplifier circuit using TDA2040 IC is a well designed and good quality PCB will always improve sound quality, Use +/-16V DC dual supply for powering the amplifier, Heat sinks are necessary for IC1 and IC2. The load can be an 8-ohm speaker, C2, C7 must be rated 25V and other electrolytic can be 10 or 15V.

LM358 IC LED Lamp Dimmer Project Circuit Diagram

LED Lamp Dimmer Project Circuit Diagram

In this LED Lamp Dimmer circuit, at the starting LED glow slowly, then grown brighter and once again slowly it became dim. The basis of the whole circuit is an operational amplifier IC named LM358.

 

LM358 IC LED Lamp Dimmer Project Circuit Diagram

LM358 IC is mainly made up of a package which contains two not dependent operational amplifiers of high gain. The most significant attribute of these IC LM358  is that we have no need of the independent power supply for the functioning of each comparator till the large range of the power supply. LM358 can be employed like transducer amplifier or can be worked as DC gain block etc. The huge DC voltage gain of the LM358 IC is 100db. For the only power supply, this IC can work on the voltage range of 3V to 32V while for the twin power supply this IC work on the range of ±1. 5V to ±16V. And moreover, the large output voltage is also supported by it.

Class D Amplifier IC BD5460

Class D Amplifier IC BD5460

BD5460 is a low power Class D amplifier that can be used in low power applications like handheld audio devices. BD5460 does not require an LC filter at the speaker output and can be driven using a battery, The standby current of BA5460 is typically zero and there is no switch ON / OFF clicks. The BD5460 can deliver 0.8 watts into an 8 ohm speaker at 3.6 V supply voltage. The power supply voltage range is from 2.5 to 6.5 V DC. The IC has a built-in standby function, short circuit protection, thermal shutdown and under voltage lockout.

 

class-D-amplifier-circuit

Class D amplifier is a type of amplifier where the power devices (MOSFET or transistor) are operated as switches. There will be only two states (ON/OFF) for these switches and no time is wasted for the transition from one stage to another. The working of a class D amplifier is as follows. At first the audio signal to be amplified compared with a high frequency triangle waveform and the result will be a square wave whose duty cycle is proportional to the input audio level. This square wave is then fed to the gate of the switching element (MOSFET) for power amplification. The then the audio signal is retrieved from the amplifier square wave using an LC filter.