TDA1562 bassed One IC 50W Audio Amplifier circuit

The integrated output amplifier described in this article consists of little more than one integrated circuit. It is intended especially for use in motor vehicles and other battery-operated applications. Although it appears simple and hardly worth looking at, the amplifier can produce an appreciable audio power output. The circuit diagram in Figure 2 emphasizes how few external components are needed to construct a complete output amplifier.

One-IC 50W Audio Power Amplifier Using TDA1562 circuit project

For instance, the new device does not need compensation networks to enhance the stability. Also, because of the absence of switch-on phenomena, there is no need for a switch-on delay network. There is, of course, still a need for supply line decoupling capacitors. Capacitors C5 and C6 are required for Class-H operation, about which more in the box. The value of input capacitors C1 and C2 is relatively low, thanks to the high input impedance of the IC. Switched RC network R4-C4 at the ‘mode select’ input (pin 4) serves to switch the IC to ‘mute’ or ‘standby’.

One-IC 50W Audio Power Amplifier Using TDA1562 circuit diagram

When the supply voltage is switched on, the IC is first switched automatically to the ‘mute’ mode and to ‘on’ only after a short delay. The time constant R4-C4 is a few tenths of a second and this delay between the two states is sufficient to obviate disturbing (and annoying) switch-on phenomena. Switch S1 enables the amplifier to be switched to ‘standby when the use of the amplifier is not needed for a period of time. When that time has elapsed, the amplifier is quickly reverted to normal operation. The current drain in the standby mode is virtually negligible at only 200µA. Resistor R3 prevents a short-circuit current ensuing when S1 is being closed at the instant C4 is being discharged.

One-IC 50W Audio Power Amplifier Using TDA1562 circuit

One-IC 50W Audio Power Amplifier Using TDA1562 circuit schematic

Measurement results (at Ub=14.4 V)
Supply voltage

* 8–18 V

Sensitivity

* 760 mV r.m.s.

Input impedance

* 70 kΩ

Power output

* 54 W r.m.s. into 4 Ω (f=1 kHz; THD+N=1%)

Harmonic distortion (THD+N)

* at 1 W into 4 Ω: 0.046% (1 kHz)
* 0.29% (20 kHz)
* at 35 W into 4 Ω: 0.12% (1 kHz)
* 0.7% (20 kHz)

Signal-to-noise ratio (with 1 W into 4 Ω)

* 88 dBA

Power bandwidth

* 7.5 Hz – 185 kHz (at 25 W into 4 Ω)

Quiescent current

* about 135 mA (‘on’)

Resistors:

* R1 = 1MΩ
* R2 = 4kΩ7
* R3 = 1kΩ
* R4 = 100kΩ

Capacitors:

* C1,C2 = 470nF
* C3,C4 = 10µF 63V radial
* C5,C6,C8 = 4700µF 25V radial
* (18mm max. dia., raster 7.5 mm)
* C7 = 100nF, raster 5 mm

Semiconductors:

* D1 = high-efficiency-LED
* IC1 = TDA1562Q (Philips)

Miscellaneous:

* S1 = single-pole on/off switch
* Four spade connectors, PCB mount Heatsink for IC1 (Rth<2.5 k/w) Read More

Police Lights Circuit with 555 and 4017 IC

This circuit uses a 555 timer which is setup to both runn in an Astable operating mode. This generates a continuous output via Pin 3 in the form of a square wave. When the timers output changes to a high state this triggers the a cycle on the 4017 4017 decade counter telling it to output the next sequential output high. The outputs of the 4017 are connected to the LEDs turning them on and off.

Police Lights Circuit Schematic

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Refrigerator Thermostat Circuit Using IC 741

Refrigerators dissipate the heat extracted from the inside via a grid structure mounted at the rear side. When a refrigerator is located in a confined space, the rear side can get fairly hot owing to the limited convection.
This problem derates the overall efficiency of the refrigerator, since the motor is automatically switched on for longer periods when a considerable difference exists between the inside and outside temperature notably on hot days it often seems as if the motor is running continuously. The ventilation control described here can help economize on power consumption.

The circuit is simple, and does not require a detailed description. A simple DC supply is set up with Tri—C1. Temperature is measured with the aid of bridge circuit R1-R2-P1 and a NTC (negative temperature coefficient resistor). IC1 is a comparator which converts the bridge output into a gate current for triac Tri, which controls extractor fan M. Some hysteresis is provided by feedback resistor Ra. The triac is controlled with a direct gate current to avoid triggering problems arising from induced voltage peaks. The circuit is uncritical as regards construction. Be sure to observe the correct connection of the al and a2 terminals on the TIC206, else it remains trig-  gered permanently. It should be noted that the circuit is dangerous to touch, as it is connected direct to the mains. It is possible to reduce the stand-by  current by omitting Tri, and powering the circuit in parallel with the refrigerator motor. The NTC should be fitted near the grid at the rear side of the  refrigerator. The triac can do with without a heat-sink.

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Simple 100 watt Inverter Citcuit Using IC 4049

You should not install the transistors straight onto the heat sinks. Make use of mica isolation kit to prevent immediate exposure and short circuiting of the transistors together as well as the ground.

Clamp the heat sink set up to the of a nicely ventilated, durable, heavy gauge metal enclosure.
Additionally attach the power transformer beside the heat sinks employing nuts and bolts.
Now attach the suitable areas of the constructed circuit board to the power transistors on the heat sinks.
Lastly connect the power transistor’s outputs to the supplementary winding of the power transformer.
Complete the building by fixing and interconnecting the exterior electrical “fittings” such as fuses, sockets, buttons, mains cord along with the battery inputs.
An alternative individual power source circuit using a 12V/3Amp. transformer might be included inside to recharge the battery the moment needed (see diagram).




You may further discover how to construct a simple 100 watt inverter circuit by focusing on the following examination method:


To better know how to construct an inverter, you will need to find out how the circuit features by means of nthe following actions:
Gates N1 and N2 of IC 4049 are configured as an oscillator. It carries out the major operation of providing square waves to the inverter part.
Gates N3... N6 are utilized as buffers to ensure that the circuit is not load dependant.
Alternating voltage from the buffer phase is applied to the base of the current amplifier transistors T1 and T2. These particular transistors execute in line with the applied alternating voltage and amplifies it to the base of the output transistors T3 and T4.

All these output power transistors oscillate at a complete swing, dispensing the full battery voltage into the every half of the secondary winding alternately.

This secondary voltage is brought on in the main winding of the transformer which is stepped-up into an effective 230 volts (AC). This voltage is employed to power the output load.
Testing Procedure

You can further understand how to build an inverter by focusing on the following testing procedure given in a comprehensive manner below:



Start out the testing method by attaching a 1 hundred watt bulb at the output socket of the inverter,

Add a 15 Amp./12V fuse inside the fuse holder,

At last connect a 12V car or truck battery to the battery inputs of the inverter.

If all the contacts are proper, the 100 Watt bulb must right away light brightly.

Continue the inverter ON for 60 minutes and let the battery discharge through the bulb,

Then transfer the given toggle switch to the charging mode, verify the meter reading,

The meter need to suggest the charging current of the battery.

The digital meter reading should certainly slowly die down to nil after a period of time, making sure that the battery is entirely charged and geared toward the subsequent action.

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Circuit Audio Amplifer with IC TDA 1521

See below this circuit:

Datasheet IC TDA 1521 :

Vcc                = 6-30 V

Pout               = 2X 6W

RL                 = 8 Ohm

Ft                   = 20-20 Khz

Icco               = 40 mA

Package         = SIP 1-9

Manufactered = Siemens

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Power Supply no transformer using IC and MOSFET

Pulsating DC voltage from rectifier D1 - D4 has a peak value 310 V This voltage is supplied to the spout of the power MOSFET T1 through a resistor divider R9. A control circuit ensures MOSFET will only deliver a short dive before and after the voltage through zero meshes. During this time do not go too far pulsating DC voltage 5 V. In a short time the same grading Capacitor C2 will be too fit, long time thereafter he gives the output current. Capacitor result should be worth a very large 10,000 μF. Load current pulses in a short time has a price peak in the 4th order A!

Schematics MOSFET use BUZ74 and IC CA3130E

Output voltage stability essentially depends on the load. Maximum output current can be 110 mA. Supply for control circuit is obtained from the resistor R2., Capacitor C1 and the diodes D5 and D6. Control circuit is formed penanding window of three op-amp. The correct calibration of the controlling circuit becomes very important. Before the nets are given, first set the P1 in the middle position and turn the S2 until penggesernya are on earth potential. Then connect the nets and inspect the working voltage range. Next connect a voltmeter (10V DC range) on the output and adjust P2 until the meter begins to deviate. Finally, set P1 for meter reading 4.8 - 5 V.

Use of this circuit is limited. Obviously, can not be used with equipment that must be electrically insulated by the nets. It is also equally good when used with equipment which is very sensitive to sigh and nails nets. But good enough for the equipment that is not enough place to net transformer. This unit should be used to power the equipment that was placed in a plastic container. Any equipment that is powered by this circuit should not be connected to other equipment via a cable. If required to do must be done through optical coupling only.

The amount of heat dissipation at T1 and R9 only around 3 W. So if this rangkian installed in small contacts, there would be no problem with the heat. During the assembly, carefully observe first-prevention precautions are necessary in connection with a circuit that works with the nets.

Warning! This circuit needs to be made with extreme caution, because the nets full voltage there at some point.

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Echo effect with IC PT2399 schematic

Effect Echo is an electronic circuit that is used to delay sound or make an echo in an audio circuit . Using a circuit of echo is easy enough , we just set on the volume, and gain and trimpot near is rate of 20 K ohm to adjust how the desired echoes. This echo circuit using ic 4558D for additional amplifier and ic PT2399 as a major component that serves to echo , or repeat the sound output on the audio system.

Click image to view larger

 How to use it as follows :
That is initially given the output of the mic input or other equipment. Then turn down the volume, and slowly raised, setting echo effect on the trimpot 20K. If not check back for the damaged to the circuit.

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Tone Control Subwoofer Low Pass Filter IC

• CMOS Technology
• 2 - Channel Input
• 3 - Channel Output (Including 1 stereo Output and Subwoofer Output)
• Low Total Harmonic Distortion (THD<0.01%, Subwoofer THD<0.2%)
• High S/N Ratio (S/N Ratio <-87dB, A-weighting)
• Least External Components
• Adjustment of Frequency response by changing the value of the external component
• Single Power Supply: 3 to 8.5 Volts
• Available in 20 pins, DIP or SO Package
• Multi-Media 3D Satellite Speaker and Subwoofer System
• Car Audio
• Audio Equipment
• Sound Card
• Other Electrical Audio Equipment

Tone Control Subwoofer Low Pass Filter IC

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Schematic Audio Power Amplifier with IC TDA2612

This amplifier circuit based on IC TDA2612 produced by siemens , minimum voltage require for this circuit is 10 Volts and amximum voltage require 35 volts DC. Power output 25 watt with 4 ohm impedance.Frequncy response 20Hz to 20kHz. Quiescent current is 70 mA. This is a mono circuit amplifier. See circuit below :

 

 You can use the circuit above at :

• Car
• Tuner
• Pre amp Head
• Pre amp Mic
• Personal Computer 
• Portable media Player
• etc.

Some advantage of the circuit :

• Fairly high voltage
• Low noise sound output
• Easy to make
• Components are easy to find

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Schematic Audio Amplifier with IC TDA2004

See this circuit below:

Datasheet IC TDA2004

Vcc                = 8-18 V

Pout               = 2X 12 W

RL                  = 2 Ohm

Ft                   = 20hz - 20Khz

Icco                = 65 mA

Package         = SIP1-11

Manufactered = SGS-ATES

Other IC TDA2004 , In this circuit you can use the following IC :

A2000V

A2005V

TDA2005

TDA2005M

MPC2005

Or you can call Persamaan IC TDA2004

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