Electronic project ,pcb circuit &printing

08/06/2023

हम लोग बहुत सारे इलेक्ट्रिक वाहन बनाने वाली कंपनी के साथ काम कर रहे हैं

08/06/2023

मैं आपके साथ सीखना चाहता हूं और आप को इलेक्ट्रिक वाहन के बारे कुछ जानकारी भी साझा करना चाहता हूं

01/12/2019

Hi friends please is link ko sheared kare friends n famly ko taki kisi tarah ke frode se bache
Dekhne me amazon ki site lagegi par ye ak frode hai jo patm badaba de raha hai
Aap khud chek kare

See related links to what you are looking for.

18/11/2019

Speedo meter for ebike

07/11/2019

Hii friends
Main ab ebike ke liye electronic products pe work kar raha hu.
Agar aap ke paas koi ebick ko lekar sabal ya suggestions hai to please shere jarur kare.
Ebike electronic products are:
Flasher
Speedo meter
Controllar
Dc dc converters
Throttal
Led lights like : tale lamp
Head light
Indicators

11/03/2019

Kya aap jante hai aap ke bike ya car me use hone wale horns ki kuch (IS )standard hai jankari na hone ki wajah se aap ke poket ko loss sehna padta hai
IS kahta hai horns ko three times set kiya ja sakta hai par aap horn na bajne par usse change kar dete hai
IS kahta hai horn minimum 150000 times bajna chahia
IS kahta hai 2wheelar horn mas 1.6 amp load ka and 4 wheelar 2.6 amp max ka hona chahia par local horns aap ki battery ko damege karte high amp. Flow kar ke

12/05/2018

General Brand Panasonic Model Name 28D400DX Type LED Screen Size (Inches) 28 Screen Size (cm) 70 Screen Resolution 1366 x 768 Display Feature HD Ready Panel Type Other Panel In The Box Box Contents tv,user manual Wall Mount Yes Floor Stand Yes Video Refresh Rate (In Hz) 100 Dynamic Ratio 100000:1...

03/08/2016

The main principle of the circuit is to ring the door bell when there is any person at the entrance. Light on the LDR determines whether a person is present or not. When there is any object at the entrance, LDR is in dark and buzzer starts ringing and the LED starts glowing.

Circuit Diagram of Electronic Eye Controlled Security System:

7805 regulator U1
Resistors R1,R2,R3,R4,R5-100k,1k,100,22o,820
1N4007 diode D1
Capacitors C1,C2
BC 547 transistors Q1,Q2
Light Dependent Resistor
Buzzer BUZ1
Light Emitting Diode D2.
Bread board
Connecting wires
DC 9V battery.
Electronic Eye Controlled Security System Circuit Simulation Video:

Electronic Eye Controlled Security System Circuit Design:

This circuit can be divided into two parts. One is the power supply and the other is logic circuit. In the power supply 9v supply is converted to the 5v .The logic circuit operates the buzzer when any shadow falls on it.

Power supply circuit consists of battery, diode, regulators and capacitors. Initially a 9v battery is connected to the diode. Diode used here is a P-N junction diode of 1N4007 series. In this circuit 1N4007 is connected in the forward bias condition .The main purpose of the diode in this circuit is to protect the circuit from negative voltages .There is a chance of connecting battery with reverse polarities which damages the circuit. So P-N junction diode connected in the forward bias allows the current to flow only in one direction and thus the circuit can be protected .There is some voltage drop across the diode. A voltage of 0.7V is dropped across the diode.

A regulator is used for regulating the output voltage of the circuit .The regulator IC used here is 7805.78 represents the series and 05 represents the output voltage .Thus a voltage of 5v is produced at the output of the regulator .Two capacitors are used before and after the regulator .These two capacitors eliminate the ripples .Thus a constant voltage is produced at the output of the regulator, which is applied to the logic circuit.

The logic circuit mainly consists of Light Dependent Resistor, transistors,Op-amp IC and a buzzer. A 220KOhm resistor is connected in series to the LDR. Light dependent resistor will have resistance in mega ohms when it is placed in dark. This resistance value will decrease gradually when it is placed in the light. Thus there is a variation in the series resistances. When the LDR is in dark it has high resistance and produces the logic high value at the output .When the LDR is in light, the resistance value of the LDR decreases and at the not gate it gives logic low voltage.

The op-amp IC used is LM 358.This IC compares the two inputs and produces an output which is applied to the transistor. Two transistor are connected to the buzzer from these resistances. The first transistor inverts the input from the op-amp. The second transistor drives the buzzer. The diode is placed for protection.

Buzzer used here is a 5v magnetic buzzer. It has two pin at the output. One pin is connected to the not gate and the other pin is connected to the Light Emitting Diode.LED is used for indication only. When the output from logic gate is high buzzer starts ringing. Led also starts blinking.

01/08/2016

Car Parking Guard Circuit Using Infrared Sensor

AUGUST 21, 2015 BY ADMINISTRATOR 14 COMMENTS

Introduction: While parking the car the driver should be more careful because he cannot see the back of the car while parking or taking reverse, if there is any obstacle and ran over it might be get damage to the car. Our project will help the person in the driving seat and give alarm if there is any obstacle or a wall while parking or while driving in revers

The IR sensor will detect the obstacle with in 100cm, if there is any obstacle it will sense and give information to the tone detector which will enable the LM555 timer to generate a PWM for the buzzer. The LM555 will generate the pulse which helps to buzz the buzzer so driver can understand that there is an obstacle.

Main Component Explanation:

LM567: is a tone detector which can interpret the frequency generated by the other component and give the output according to the application designed by the engineer. For example if a component is attached to the input of LM567 which can generate a 40 kHz signal , but we to function the following circuit when the component has reached to the 40KHz. At this decision making we will use tone detector. The tone detector is mainly used in touch tone decoders, ultrasonic controls, frequency monitoring and control etc.

LM555: is a timer which can generate a PWM signals in various width and duty cycles. The 555 timer is mainly used to control the other peripherals like motors, detectors, regulators etc.

IR Sensor: the main function of the IR sensor is to produce a beam for certain distance (the distance of the beam is always depends on the IR sensor, different IR sensor have different range of beam distance) if the there is any obstacle in the beam it will conduct and give signal.

Photo Darlington Transistor: the photo darlington transistor will act as a photo detectors. They will conduct to the light or electro magnetic signals. The main function of this transistor is to amplify the input signal of the transistor. But it will work slowly when compared to the other transistors. It is having a maximum frequency of 20 KHz.

Circuit Diagram of Car Parking Guard:Explanation:

The reverse indicator light supply is given to the 7805 regulator to give 5v to the rest of the circuit. The diode D6 is used to eliminate the reverse current and wrong supply polarity.
When the car is driving in reverse the car battery will provide DC supply the reverse light indicator at the back of the car when this supply came to the reverse light indicator the circuit will have the power supply.7805 will regulate the DC voltage to 5V and give to the IR Sensors through the transistor with 20 KHz modulating frequency of the LM567 (TONE DETECTOR) available at Pin5. The resistor R1 will resists the IR senor current. At this point the pin8 of LM567 is high which will enable the LM555 timer operating in astable multivibrator mode. The output of the timer is enabled which can be assured by the LED (blinking) and also buzzer will beeps at determined rate given by the resistors R6, R7 and capacitor C7. The timer output also is given to the lamp through a transistor. The lamp will blink as a warning signal because of the PWM signal generated by the timer, transistor will work as a switch and resistor R10 will limit the current. This condition is maintained until the 20 KHz signal is received by the pin3 of the LM567.
The above condition is when there is no obstacle in the path of the car while taking reverse. If there is a obstacle the IR beam will radiate back to the IR sensor and the 20KHz modulated signal is given to the pin3 of LM567 through photo Darlington transistor, at this point the pin8 of the LM567 is turned to low and also gets locked to detect the 20Khz signal. By this the LM555 is turned low and disabled by this the led will remain lighting and buzzer makes the continuous sound to alert the driver.

Note: This complete circuitry will be
attached to the back bumper and placed at the center. The buzzer and led should be placed on the dash board for visibility of light and hearing purpose for the driver.

Make the connection to the reverse indicator light and the circuit in parallel and beware of the polarity.

01/08/2016

Circuit Components:

At89c51 controller
At89c51 programming board.
16*2 LCD
5V Relay
Bc547 (NPN) transistors – 5
Resistors (1K) – 4
Resistor – 330 ohm
AC Motor
Pot – 10k
Programming cable
Connecting wires
Water Level Controller using 8051 Circuit Design:

The main heart of this project is AT89C51 microcontroller. The water level probes are connected to the P3.0, P3.1, P3.2, and P3.3 through the transistors. Port P2 connected to the data pins of LCD and control pins RS, RW and EN of LCD are connected to the P1.0, P1.1, and P1.2 respectively.

Initially when tank is empty, LCD will display the message EMPTY and motor runs automatically. When water level reaches to quarter level, now LCD displays QUARTER and still motor runs. For further levels, LCD displays the messages HALF and ¾ FULL.

When tank is full, LCD displays FULL and motor automatically stops. Again motor runs when tank is empty.

Related Post: Also read the interesting concept about How water level alarm circuit works using 555 Timer.

Algorithm for Water Level Controller Circuit:

First configure the controller pins P3.0, P3.1, P3.2 and P3.3 as inputs and P3.4 as output.
Now initialize the LCD.
Continuously check the water level input pins P3.0, P3.1, P3.2, and P3.3
If all the pins are low then display tank is empty on LCD and make P3.4 pin high to run the motor automatically.
High pulse on the pin P3.0 indicates quarter level, display the same thing on LCD.
If P3.1 is high then water level is half.
High pulse on P3.2 indicates 3/4th full of the tank.
If P3.3 is high then tank is full, now make P3.4 pin is low to turn off the motor automatically.