Wiring circuit

Showing posts with label ic. Show all posts

Showing posts with label ic. Show all posts

Sunday, October 26, 2014

Solar Charger use IC LM317

At this point is a Solar Charger Circuit to is used to charge information Acid otherwise Ni-album batteries using the solar energy power. The circuit harvests solar energy to charge a 6 volt 4.5 Ah rechargeable battery in favor of various applications. The stallion has Voltage and Current supervision and terminated voltage restrict sour facilities.

Circuit uses a 12 volt solar panel and a changeable voltage supervisor IC LM 317. The solar panel consists of solar cells each one rated on 1.2 volts. 12 volt DC is presented from the panel to charge the battery. Charging current passes through D1 to the voltage watchdog IC LM 317. By adjusting its Adjust pin, output voltage and current can subsist regulated.

Solar Charger use IC LM317 Schematic

VR is placed amid the adjust pin and ground to provide an output voltage of 9 volts to the battery. Resistor R3 confine the charging current and diode D2 prevents discharge of current from the battery. Transistor T1 and Zener diode ZD conduct yourself having the status of a stop rotten switch at what time the battery is ample. Normally T1 is rancid and battery gets charging current.

After the terminal voltage of the battery rises over 6.8 volts, Zener conducts and provides station current to T1. It followed by turns on education the output of LM 317 to prevent charging. If you want to specific voltage / current output , you can replacing ZD on the circuit above.

Thursday, October 23, 2014

LED Flasher Circuit Using 555 Timer IC

This is a simple LED flasher project that uses a common 555 timer IC for its operation. It is configured as an astable mode which means that its output is a square wave oscillator. Two LEDs are connected to its output in such a way that when one LED is ON, the other LED will turn OFF.

It uses only 10 simple parts that are easily available at any electronic shops. Capacitor C2 charges exponentially through resistors R1, R2 and the resistance of the trimpot. When C2 has charged to about 2/3 VCC it stops charging and it discharges to about 1/3 VCC through R2 and the trimpot resistance via pin 7. This is the standard operation of a 555 timer. When a Vcc of 5 V to 15 V DC is applied to the circuit, the LED will start to flash.

The frequency of the flashing can be changed by varying the resistance of the potentiometer or trimpot. Parts List The parts list of the simple LED project is as shown below.

ic HT82231 Animal sound generator using

This is an animal origin, a simple circuit. Interesting, because an IC package and a simple good
Operation of the circuit. This circuit, an IC, a number HT82231 IC package that has other audio source animals. The origin of the sound depends on the switch S1-S8 of switch.

Each is a different animal sounds and choose to press each LED1, LED2 lights alternately as it sounds they hear. The R1, R2 LED forward current limiting for each signal will come out on pin 19, to expand the force with Q1. There is also a sound that VR1 can be adjusted as soon as we hear. Or slow as you like C1, C2 prevents low-frequency noise. And high frequencies.

Monday, October 20, 2014

Audio Lm 3909 IC conduction tester

This tiny conductivity tester works with LM 3909. The tester makes a beeping sound if the resistance between the test probes between 0 and 100 O lies. Due to the volume of the beep, the resistance between the test probes can be determined.

Parts List

     R1 = 1 k
     C1 = 10 uF
     C2 = 100 nF
     LS = Loudspeaker 12 to 16 Ω
     IC1 = LM 3909

Saturday, October 18, 2014

MJ2955 for IC 78xx Boosting Regulator Current Diagram Circuit

Source :: http://www.zen22142.zen.co.uk/Circuits/Power/boosti.htm

IC 78xx series of voltage regulators are available with different current outputs, you can boost the available current output with this circuit. A power transistor is used to supply extra current to the load the regulator, maintaining a constant voltage. Currents up to 650mA will flow through the regulator, above this value and the power transistor will start to conduct, supplying the extra current to the load. This should be on an adequate heat sink as it is likely to get rather hot. Suppose you use a 12v regulator, 7812. The input voltage should be a few volts higher to allow for voltage drops. Assume 20 volts. Lets also assume that the load will draw 5amps. The power dissipation in the transistor will be Vce * Ic or (20-12)*8=40watt. It may keep you warm in the Winter, but you will need a large heatsink with good thermal dissipation. If you want to Boost the output current with a negative regulator, such as the 79xx series, then the circuit is similar, but an NPN type power transistor is used instead.

Friday, October 17, 2014

Using IC LA 4440 Laptop Audio Amplifier Circuit Diagram

This is the best IC LA 4440 Laptop Audio Amplifier circuit diagram, the audio output from the laptop’s built-in loudspeakers is low. A energy amplifier is needed to obtain a high volume. This is a simple circuit to amplify the laptop’s audio output. The circuit is made around energy amplifier IC LA 4440 (IC1) along with a couple of other components. LA4440 is really a dual funnel audio energy amplifier.

Using IC LA 4440- Laptop Audio Amplifier Circuit Diagram

Laptop-Audio-Amplifier-IC-LA-4440

Laptop Audio Amplifier Circuit Diagram

It’s low distortion over an array of low to high wavelengths with good funnel separation. Built-in dual channels enable it for stereo system and bridge amplifier programs. In dual mode LA4440 gives 6 w per funnel as well as in bridge mode 19- watt output. It’s ripple rejection of 46 dB. The audio result can be recognized by utilizing two 6-watt loudspeakers.

Connect hooks 2, 6 and ground of IC1 towards the stereo system jack which is combined with laptops. Assemble the circuit on the general-purpose PCB and enclose inside a appropriate cabinet. The circuit works off controlled 12V power supply. It’s suggested to make use of audio input socket within the circuit board. Make use of a proper warmth-sink for LA4440.

Sunday, October 5, 2014

IC 723 2N3055 13 2V 40A Power Supply Unit

THE HEAVY CURRENT carrying connections are shown in bold in Fig 1. The mains input passes through an EMC filter, protection fuse F1 and ON/OFF switch S 1 to transformer TI. The secondary output of TI is rectified by D I but cannot pass through open relay contacts RL1a. To start the PSU switch, S2 is operated allowing limited current to pass via R1 to slowly charge the reservoir capacitor C1. As C1 charges, the RL1 a pulls in closing the relay contacts and shorting out R1 and S2 placing the PSU in the ON state.

Voltage regulator IC1 is the popular 723. A 7.2V reference on IC 1:6 is fed to non-inverting ICI:5. This is compared with a sample of the PSU output voltage via RI3, RI4 and R15 to inverting input at ICI:4. The 723 can source 150mA at ICl:10, so transistor TR2 acts as a Darlington driver for the pass transistors TR3 to TR7 inclusive. Resistors R21 to R25 are current sharing resistors and the voltage across them is proportional to the current drawn by the PSU load.

When the current through R21 reaches 8A (i.e. a total PSU current output of 40A) the voltage across R11 and R12 is 0.88V and is tapped from R I I to bias a transistor inside IC1 which robs IC1: 10 of some current, forcing the PSU into a current limiting mode.

Thursday, October 2, 2014

Simple Transistor Hfe Tester Circuit Diagram Using IC 741

P1 is used to set a reference voltage derived from voltage UXY UD1 (or D2 for a PNP transistor). This means that l the setting of the potentiometer is directly proportional to the hpp; of the transistor under test and is independent of supply voltage.
The voltage across R2 and the voltage set with P1 are compared by lC1 which is connected as a comparator. Potentiometer P1 is now set so that the LED at the output of the op-amp just lights or is just dimmed.
This hfe tester is interesting because of its simplicity and because it enables the B of both PNP and NPN transistors to be measured.
At this setting the voltage across the potentiometer is equal to the voltage across R2. Switch S1 is used to switch from NPN to PNP (or vice versa) by reversing the polarity of voltage UXY.
LEDs D3 and D4 in the supply lines ensure that the input voltages to be measured are within the common mode range of the opamp used.
Furthermore the measurement is independent of the supply voltage of the tester. As the diagram shows, the base current of the transistor under test travels via R1. Its base current IB is thus equal to The voltage drop across the collector resistor is hfe x IB x R2.

Wednesday, October 1, 2014

Light Activated Switch Circuit Using IC 555

A very useful light activated switch circuit can be made by utilising a single 555 timer with its trigger and threshold inputs connected together.
The schmitt has a very low input current (1.5uA) and can directly drive a relay taking up to 200mA of current. The circuit shows a 555 schmitt being used to energise a relay when the light level on a photoconductive cell falls below a preset value; the relay energises when the voltage on pins 2 and 5 is greater than 2/3Vcc and de-energises when the voltage falls below I/3Vcc. This gives a hysteresis of 1/3Vcc, The circuit can be used in many other similar applications where a high input impedance and low out- put impedance are required with the minimum component count.

Monday, September 22, 2014

Create natural sound using ic MM5837

Normal voice we hear is from frequencies that are a combination of both high frequency and low frequency. Signal strength is not equal, will result in a different voice.

Operation of the circuit. When the power supply to IC1 by IC1 will work out the frequency produced by the pin 13 pin 3 is press the switch on left off. C to a value that will be connected to each circuit by the C makes the sound different.

Of the signal from pin 3 of IC1 is through R1 and VR1 is responsible for adjusting the strength of the signal will be expanded to IC2, which IC2 is IC amplifier with growing 1W signal that originates in the leg 5. The high frequency. And noise will be R3, C8 filter to ground the remaining signal is Retail Oil Link to C9 on the speakers.

Saturday, September 13, 2014

140W audio amplifier with IC STK070

By using the above amplifier circuit you can hear the sound quality is quite good by a high output power. Maximum voltage circuit pa approximately 55Volt DC. 70-140W output power with impedance 8Ohm.

power

Part List
R1 = 10K
R2 = 1K
R3 = 0.4R
R4 = 0.4R
R5 = 4.7R
C1 = 0.015
C2 = 10uF
C3 = 220uF
C4 = 0.15uF
C5 = 220uF
C6 = 47uF
C7 = 0.047uF
U1 = STK050 , STK070

Thursday, September 11, 2014

18W amplifier circuit based on IC HA13118

Here the 18W audio amplifier schema which powered by IC HA13118 as the main component.The type of this amplifier is bridge amplifier since the output line does not grounded.

18W

The supply voltage required for this schema is 8 – 18V DC, at least 1 to 2 Amps. Maximum output power will only be obtained with a power supply of 18V at greater than 2 A, using a 4 ohm speaker. The power supply should be well filtered to reduce mains hum, a regulated supply will reduce noise even further. Extra filtering is unnecessary if operating from a battery supply.

View more explanation about this 18W audio amplifier schema HERE.

Sunday, September 7, 2014

3x150W Audio Power Amplifier IC Class AB

General Description
The STK433-330N-E is a hybrid IC designed to be used in 150 3 ch class AB audio power amplifier

Circuit Diagram

3x150W Audio Power Amplifier IC Class AB

Layout:

PCB:

Friday, September 5, 2014

Power Amplifier Circuit 2 x 20 W stereo with IC AN7156N

This circuit operate with IC AN7156N . You just can use this IC , because havnt similarity it. In this Circuit have 2 input IN R and IN L and have Output R and L . Voltage supply require 15 V , minimum voltage 9 V and maximum voltage 24V . And the voltage must DC voltage , and better the DC voltage filtering .
Maximum Output for 1 speaker 25 W , so this circuit have maximum output 2 X 25 W with minimum impedance 4 ohm. See this circuit schematic below :

Click image to view enlarge

Thursday, September 4, 2014

Circuit Audio Amplifer with IC TBA 611

This Circuit require voltage 4,5 to 15 Volt. I recomended to this circuit supply with 12 volt . Output audio is mono with power 1 Watt.

See this circuit and datasheet IC TBA611 below:

Datasheet IC TBA 611

Vcc = 4,5-15 V

Pout = 1 W

RL = 8 Ohm

Ft = 50-15 Khz

Icco = 10 mA

Package = TABS4-14

Manufactered = RFT

Troubleshooting STR IC Regulator Power Supply

A. Unable to start.

Can be caused by:

No start-up voltage supply Vcc or a voltage less than 16V
Electrolityc Capacitors supply voltage Vcc filter dry.

2. Led indicator blinking

If the supply voltage Vcc examined rocking. This is because the regulator of life and death because OVLO work., Die-protectionist regulators and auto start life over and over. If it is turned off Electrolityc Capacitors usually still keep the rest of the cargo.

Can be caused by:

Electrolityc Capacitors supply voltage Vcc filter on a pin-4 dry. Replace with a value equal to or slightly larger. - triger UVLO
input filter capacitor on pin-1 feed dry behind the declining value - triger OLP
Rectifier diode of the switching transformer is damaged (sometimes when examined with avo-meter looks like a still good)
cause the supply voltage Vcc drops of the switching transformer (UVLO)
Part damage or broken lines on the feedback circuit of the voltage regulator through B to photocoupler - triger OVP
Electrolityc Capacitors dry filter voltage B - triger OVP
One of the output voltage of the switching transformer secondaries there is a short (over load) - triger OLP
Soft start capacitor value decreases - triger OLP

3. Noise arising (noise)

Can be caused by:

Transformer windings slack.
If there are ceramic capacitors - can sometimes cause interference noise due to its characteristic piezoelectrik like crystal resonator. Replace with film capacitors.

4. When the st-by normal stress. But when the power is on the regulator directly off protectionism no voltage on the secondary this part. Electrolityc Capacitors are still storing charge.

Can be caused by:

Sensor OVP small value resistor on pin-2 to the ground so that the value of delayed triger to OLP or OCP.
Regulator IC is damaged

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Note: Be careful when the regulator is not working. Because of Electrolityc Capacitors may still have a charge when turned off.

Tuesday, September 2, 2014

Power amplifier circuit with IC LM386

IC LM386 is working for the amplifier audio circuit with a low power output , range from 0.325 watts to 2 watts with impedance 8 ohm. In this circuit requires voltage of 12 volts to the maximum work, and maximum current 3 Amp.
Components List :
R1=33K / 0,25W
R2=1K / 0,25W
R3=10R / 1W

C1=100n
C2=0,1uF/35V
C3=100uF/16V
C4=220uF/35V
C5=4,7uF/16V
IC1=LM386

Connector Instruction:
X-1 = Input , connect to output
X-2 = Input Ground
X1-1= V+ , 12 Volt DC
X1-2= V-/ Ground
X1-3= Speaker+
X1-4= Speaker-

Basic IC MonoStable Multivibrator

Basic LM555 Timer CIRCUIT

Part List
C2 = .01uf
IC1 = LM555 Timer
SWI = n.o. momentary switch
R1 and C1 determine lenght of
out put pulse where t = R1 x C1
and R1 is in ohms and C1 is in farads .

by Tony van Roon

Monday, September 1, 2014

Schematic Audio Amplifier with IC AN214

See this circuit below :

Datasheet IC AN214

Vcc = 6-18 V

Pout = 4,4W

RL = 4 Ohm

Ft = 50hz - 17Khz

Icco = 20 mA

Package = SIP2-9

Manufactered = MATSHUSHITA

Thursday, August 28, 2014

LED Flasher Circuit Using 555 Timer IC

This is a simple LED flasher project that uses a common 555 timer IC for its operation. It is configured as an astable mode which means that its output is a square wave oscillator. Two LEDs are connected to its output in such a way that when one LED is ON, the other LED will turn OFF.

It uses only 10 simple parts that are easily available at any electronic shops. Capacitor C2 charges exponentially through resistors R1, R2 and the resistance of the trimpot. When C2 has charged to about 2/3 VCC it stops charging and it discharges to about 1/3 VCC through R2 and the trimpot resistance via pin 7. This is the standard operation of a 555 timer. When a Vcc of 5 V to 15 V DC is applied to the circuit, the LED will start to flash.

The frequency of the flashing can be changed by varying the resistance of the potentiometer or trimpot.Parts List The parts list of the simple LED project is as shown below.

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