Sunday, August 27, 2017

Electronic Design: Adjustable Power Supply Circuit using XL4015 IC

Radio Circuit. - This is one of implementation of XL4015 IC to build adjustable power supply system. It is only need small component completed to build this electronic circuit that basically component.

The electronic design circuit of adjustable power supply using XL4015 IC is look like in Figure 1 below. Other component used like resistors, capacitors, transistor, inductor, etc.

Beside we will show you electronic design circuit and component parts need, we also will give you global description about this circuit. So, please enjoy to continue reading this article until finish and get more useful.

Electronic Circuit Design

Component Parts
  • XL4015: DC/ DC 180-KHz Buck Converter, 5 A/36 V
  • M7: SMD version of 1N400x Diode (used here for circuit protection)
  • HSN3631AS: Numeric Three-Digit LED Display, Red
  • LM317: Adjustable Voltage Regulator (used here as the dvm power supply)
  • SS54: Schottky Diode 40 V/5 A
  • 47 uH/5 A: Power Inductor
  • 50K MT: Multi-Turn Preset Potentiometer 50K
Description

The electronic circuit design like in Figure 1 above show you adjustable power supply using XL4015 IC. Other component need also that can supply with low voltage DC +4 - 36V and ground source to charge this IC and all system component from power supply built. With this electronic design circuit you can produce touch on/off switch that useful now.

According Electroschematics blog mentioned that power up the module with a stable and accurate dc power supply (such as a regulated 6-V power supply). Then short-press the button on the right side to select which one you need to adjust (input or output). Long-pressing the button on the right side (holding it for >2 s) makes the module enter calibration mode. After releasing the button, the related LED will blink to indicate which voltage is now calibrating, and the numeric display will blink with the present value.

Short-press the button to change the present value. For example, if your power supply is 6 V but the result of voltage meter is 5.8 V, you need to set the value to 6 V. Short-press the button on the right side to increase the voltage by one unit. Short-press the button on the left side to reduce the voltage by one unit.

Long-press button on the right side to store the redressed value. The preset pot sets the actual output voltage. Calibrate the output voltage reading on the digital voltmeter in the same way above. For example, if your actual output is 3 V but the result on the voltmeter is 4 V, you need to set the value to 3 V. The redressed value will be stored in the non-volatile memory of the module.

Monday, August 14, 2017

Electronic Design: Touch ON and OFF Switch Circuit using NE555 IC

Radio Circuit. - This is one of implementation of NE555 IC to build switching system. It is only need small component completed to build this electronic circuit that basically component.

The electronic design circuit of Touch ON and OFF Switch Circuit using NE555 IC is look like in Figure 1 below. Other component used like resistors, capacitors, transistor, sensor, etc.

Beside we will show you electronic design circuit and component parts need, we also will give you global description about this circuit. So, please enjoy to continue reading this article until finish and get more useful.

Electronic Circuit Design

Component Parts
  • 1 x 555 Timer IC
  • 1 x 3.3 MΩ Resistor (1/4 Watt)
  • 1 x 1 MΩ Resistor (1/4 Watt)
  • 1 x Bulb with holder (regular or CFL)
  • 1 x 5V Relay Module (if relay module is not available, then you need the following components)
  • 1 x 5V Relay
  • 1 x 2N2222 NPN Transistor
  • 1 x 1N4007 PN Junction Diode
  • 1 x 1 KΩ Resistor (1/4 Watt)
Description

The electronic circuit design like in Figure 1 above show you touch ON/OFF switch using 555 IC. Other component need also that can supply with low voltage DC +12V and ground source to charge this IC and all system component from power supply built. With this electronic design circuit you can produce touch on/off switch that useful now.

According Electronichub blog mentioned that the design of the Touch ON and OFF Switch circuit is very simple. First, the GND, VCC and RST pins of the 555 i.e. pins 1, 8 and 4 are connected to GND and 5V respectively. Pin 2 is pulled HIGH using a 3.3 MΩ Resistor and Pin 6 is pulled LOW using a 1 MΩ Resistor.

Two touch plates are connected to pins 2 and 6 as shown in the circuit diagram. In case of the touch to ON plate, one end is connected to pin 2 and other end is connected to GND. Similarly, one end of the touch to OFF plate is connected to +5V and the other end is connected to Pin 6.

The main principle behind the project lies in the basic functionality of the pins of 555 Timer. We know that 555 Timer has 8 pins namely GND (1), Trigger (2), Output (3), Reset (4), Control Voltage (5), Threshold (6), Discharge (7) and VCC (8).

In this, Pins 2 and 6 are used in this project. Now, we see the basic working of these pins. When Pin 6 i.e. the Threshold pin is held LOW, and if Pin 2 i.e. the Trigger Pin is made LOW, the output of the 555 Timer IC will be HIGH and it stays there. This condition can be used to turn ON the appliance.

Now consider Pin 2 is pulled HIGH and if Pin 6 is made HIGH, the output of the 555 Timer IC will be LOW and it stays there. This condition can be used in our project to turn OFF the load or device.

Wednesday, August 2, 2017

Electronic Projects: Remote AC Power Control by Android Application with LCD Display

Projects. - In this article we will give you one electronic projects categorized using 8051 microcontroller and Android application for remote AC power control. Beside 8051 microcontroller, in this project also using LCD, SCR or thyristor.

In here we will show you the Figure of electronic projects Remote AC Power Control by Android Application with LCD Display, global description, hardware and software requirement, and the last we will give you the link to continue your reading to official source.

Electronic Project

Figure 1. Remote AC Power Control by Android Application with LCD Display Projects (Source: www.edgefxkits.com)

Hardware and Software 
  • 8051 series Microcontroller
  • LM358
  • Opto isolators
  • SCRs
  • Push Button
  • Transformer
  • Diodes
  • Voltage Regulator
  • Resistors
  • Capacitors
  • Crystal
  • Lamp
  • Bluetooth Device
  • Keil compiler Languages:
  • Embedded C or Assembly
  • Android Application.
Description

The electronic projects like in Figure 1 above show you thyristor power control by IRemote AC Power Control by Android Application with LCD Display.

The project is designed to control AC power to a load by using firing angle control of thyristor. Efficiency of such power control is very high compared to any other method.

Remote operation is achieved by any smart-phone/Tablet etc., with Android OS, upon a GUI (Graphical User Interface) based touch screen operation. The project uses zero crossing point of the waveform which is detected by a comparator whose output is then fed to the microcontroller.

The microcontroller provides required delayed triggering control to a pair of SCRs through opto isolator interface.Finally the power is applied to the load through the SCRs in series.

And now you can continue your reading about the electronic projectsRemote AC Power Control by Android Application with LCD Display from original or official site using link HERE.