Tuesday, December 6, 2016

Free Download KiCad EDA for Circuit Designing for Windows, MAC OS X, and Linux

Eltronicschool. - This is one of free circuit design software for electronic project for you want to use this software easily and freely. This software named with KiCad EDA for Windows, MAC OS X, and Linux operation system.

Image Courtesy of Listoffreeware

In this moment we will give you global description about this software, and then we will give you the link to take free download KiCad EDA for Circuit Designing for Windows, MAC OS X, and Linux from official site easily.

Description

This is KiCad EDA for Circuit Designing for Windows, MAC OS X, and Linux for you. Accordingly Listoffreeware site describe that KiCad EDA  is a cross platform circuit design software for Windows, MAC OS X, and Linux. To design a circuit you will have to create a new project and open the Schematic Editor. Opening a new project creates a new directory. Go to the Schematic Editor tab and begin designing. Click on the Place Component option to select a part and place it on  the designing area. These components include: Microchip, Memory, Display, Audio device, Xilink, Power, Transistors, DSP, and many more. Add more components like: Ground, Wire, Bus, Junction, etc. to connect the main components.

Save the designed sheet, which you can find in the directory you created. Render grids on the sheet, and change cursor pointer to help you design circuit easily. Print option lets you Preview and Print the designed sheet directly from this circuit design freeware.

The Schematic Library Editor lets you edit and change the properties of various components. Click on PCB Editor tab to design printed circuit board. With the help of PCB Footprint Editor, you can add footprint to PCB according to various components. A Bitmap2Component converter, and a PCB Calculator are also available in this software.

Download Software

And now you can click the link below to take free download KiCad EDA for Circuit Designing for Windows, MAC OS X, and Linux from official site easily.


Thursday, December 1, 2016

Circuit Schematic Battery Charger using SCR 2N3668

Eltronicschool. - This is one of the battery charger circuit which will helpful for you to build yourself battery charger using popular component. In here we will show you circuit schematic of battery charger based on SCR component like 2N3668 that maybe easy found in your country.

In this time, beside we will give you the schematic diagram of battery charger using SCR 2N3668, we also will give you global component parts and description about this circuit schematic according the information from the site which published this circuit.

Circuit Schematic

Component Part
  1. Transformer
  2. Resistors
  3. Diodes
  4. SCR 2N3668
  5. Variable resistor
  6. Fuse
  7. Transistor
Description

Circuit schematic like in Figure 1 above is Battery Charger circuit using SCR 2N3668. The main component is used in this circuit is SCR 2N3668 which functioned to rectify the AC mains voltage to charge the battery.

How it works

According Circuitstoday site describe how the circuit work as follow that When the battery connected to the charger gets discharged the battery voltage gets dropped.This inhibits the forward biasing voltage from reaching the base of the transistor Q1 through R4 and D2.This switches off the transistor.When the transistor is turned OFF,the gate of SCR (H1) gets the triggering voltage via R1 & D3.This makes the SCR to conduct and it starts to rectify the AC input voltage.The rectified voltage is given to the battery through the resistor R6(5W).This starts charging of the  battery.

When the battery is completely charged the base of Q1 gets the forward bias signal through the voltage divider circuit made of R3,R4,R5 and D2.This turns the transistor ON.When the Q1 is turned ON the trigger voltage at the gate of SCR is cut off and the SCR is turned OFF.In this condition a very small amount of charge reaches the battery via R2 and D4 for trickle charging.Since the charging voltage is only half wave rectified ,this type of charger is suitable only for slow charging.For fast charging full wave rectified charging voltage is needed.

Sunday, November 27, 2016

ZenitPCB to Design Electronic Circuit Easy and Freely - Free Download

Eltronicschool. - This is one of easy use and freely electronic circuit design software called with ZenitPCB for Windows system. With this software you can design electronic circuit using various component provided.

Image Courtesy of Listoffreeware

In this time, beside we will give you briefly description about this ZenitPCB, we also we will give you this software download freely from formal site that provide this ZenitPCB download easily and freely.

Description

FromListoffreware describe that ZenitPCB is software which give you a free to use circuit design. Using ZenitPCB software you can design electronic circuits with various circuit components provided. Firstly you can create a new design sheet as begin designing an electronic circuit. Then you will look a black colored board with grid appears where you can place your components. 

Right click on the board using your mouse to add Parts, Wire, Signal Ref, Global Net, and Text. Then please click on the Parts option to open a library of parts. Now you will find different Diodes and ICs who you can select a part and click on the place to apply it on the board. Next, click on a placed component to view its properties in the panel available on the left side of the screen. Now you can go to View>ERC (Electrical Rule Check) to check if there's no error in the circuit design after you have designed your circuit.

Please save your project in .ZSC format and you can printout of the circuit can be taken if you want. A report of the project can also be exported in TXT format. This report includes Project name, Author, Number of Parts, Pin count, etc. A User's guide is available in PDF format in the Help menu.

Download

And now you can click the link below to take free download ZenitPCB to Design Electronic Circuit Easy and Freely from formal site.

Wednesday, November 23, 2016

Simple Circuit Schematic Fire Alarm System using Thermistor and NE555 IC

Eltronicschool. - There are many electronic circuit schematic which be designed for Alarm system application. One of the fire alarm circuit schematic is using the main component that called with Thermistor that will give low resistance when this component is hot. 

Thermistor easy detect the fire and indicate it that suitable with our goal to build simple fire alarm system. With only combine thermistor with other component like transistor, resistor, capacitor, and IC to build oscillator like NE555 IC, we can build our self the fire alarm system simply look like in Figure 1 below.

Circuit Schematic

Component Part
  1. Resistors
  2. LED
  3. Thermistor
  4. Diode
  5. Polar Capacitors
  6. Non Polar Capacitors
  7. NPN Transistors
  8. PNP Transistor
  9. NE555 IC
  10. Speaker
Description

Circuit schematic like in Figure 1 above is Fire Alarm System using Thermistor and NE555 IC. The major component are needed in this circuit are thermistor and NE555 IC. When sense the fire with the high temperature, thermistor will give low resistance and when no fire or low temperature, thermistor will give high resistance. 

When thermistor detect fire, it will make it becomes hot and it gives a low-resistance and give easy path for the positive voltage +6V to R2 and D1. And output the D1 will be gave to the base of transistor T1 and also to charge up Capacitor C1 with the positive supply voltage and it will increase the the time for which the alarm is ON. 

The larger the positive bias applied to the base of transistor T1 (BC548) when it is gave the larger the value of C1. Then the collector of transistor T1 is coupled to the base of T2, the function of transistor T2 is provide a positive voltage to pin reset of NE555. 

The NE555 IC will produce frequency depending on component resistors R5 and R6 and capacitance C2. This IC will begin generate frequency in it's output pin 3 when reset pin 4 in high condition or get positive source from PNP transistor T2.

To make sound of fire alarm system is loud, the output pin 3 NE555 coupled with base of transistor T3 which drive the speaker to generate alarm sound loud.

Tuesday, November 15, 2016

Circuit Schematic Portable Solar Lantern using 3V6/1W White LED

Eltronicschool. - This is one of the solar circuit schematic application for portable solar lantern using 3V8/1W white LED like in Figure 1. below. The main component are usd in this circuit schematic are 6V/5W solar panel and the 3V6/1W White LED with toher component complement.

In this time, based on all component mentioned before, we will give you one of electronic circuit schematic of Portable Solar Lantern using 3V6/1W White LED.

Circuit Schematic

Figure 1. Portable Solar Lantern using 3V6/1W White LED Circuit

Component Part
  1. Solar Panel
  2. Diode
  3. Resistors
  4. LED
  5. Battery
  6. Capacitors
  7. White LED
  8. Switch
Description

Circuit schematic like in Figure 1 above is Portable Solar Lantern using 3V6/1W White LED. From Electroschematic site that also published this circuit describe that this portable solar lantern circuit uses 6 volt/5 watt solar panels are now widely available. With the help of such a photo-voltaic panel we can construct an economical, simple but efficient and truly portable solar lantern unit. Next important component required is a high power (1watt) white LED module.

When solar panel is well exposed to sunlight, about 9 volt dc available from the panel can be used to recharge a 4.8 volt /600 mAh rated Ni-Cd batterypack. Here red LED (D2) functions as a charging process indicator with the help of resistor R1. Resistor R2 regulates the charging current flow to near 150mA.

Assuming a 4-5 hour sunlit day, the solar panel (150mA current set by the charge controller resistor R2) will pump about 600 – 750 mAh into the battery pack. When power switch S1 is turned on, dc supply from the Ni-Cd battery pack is extended to the white LED (D3). Resistor R3 determines the LED current. Capacitor C1 works as a buffer.

Tuesday, November 8, 2016

Circuit Schematic Solar Birdhouse using LM317 IC

Eltronicschool. - This is one of the circuit schematic of Solar Birdhouse using LM317 IC like in Figure 1 below. The main component are used in this circuit are solar panel, LM317 IC and LEDs.

In this time, we will give you one of electronic circuit schematic of Solar Birdhouse using LM317 IC description and component needed when you want to build it yourself.

Circuit Schematic

Figure 1. Circuit Schematic Solar Birdhouse using LM317 IC

Component Part
  1. Switch
  2. Rechargeable Battery
  3. LEDs
  4. Solar Panel
  5. Resistor
  6. LM317 IC
Description

Circuit schematic like in Figure 1 above is Solar Birdhouse using LM317 IC. According Electroschematics site describe that this solar birdhouse light is an economical circuit of a mini solar lighting system circuit is presented here. At the heart of the circuit is a mini 6V/2W solar panel. Here, this solar panel is used to charge a 4V/800mAh rechargeable battery through a charge current limiter circuit built around an adjustable 3-pin regulator LM317T (IC1).

Resistor R1 sets the output current. The lighting circuit comprising 20 white LEDs are directly powered the battery. Swich S1 is a simple on/off switch. Assemble the circuit on a small PCB and enclose in a suitable cabinet. Fix the solar panel on the top of the cabinet and power switch and LEDs on the front side.

Monday, November 7, 2016

Free Download PCBWEB for PCB Design Software for Windows

Eltronicschool. - This is one of free PCB design software that called with PCBWEB for Windows System. This software allow user like student and hobbyist can design PCB layout freely.

Image Courtesy of Listoffreeware

In this moment, we will give you global description about PCBWEB and then we will give you the link to take free download PCBWEB for PCB Design Software for Windows from external or original source.

Description

This is freely PCBWEB for PCB Design Software for Windows for you who want to design PCB layout. From Listoffreeware blog describe that PCBWeb is a free PCB design software for Windows. It lets you design PCB on your computer and order it online to the manufacturer. Design your circuit with various components, like: Chips, Diodes, Resistors, Transistors, etc. When you create a new file for PCB design, you are asked for Board Name, Board Size, Layers Required, Silk Screen, Material Thickness, etc. A new tab appears on the UI with a blank sheet to design your circuit. Begin adding components from the toolbar (Ctrl+K). A new window opens where you can search or browse for a part to add in the circuit. When you select a component, the window displays the details of that part, like: Manufacturer, Part number, Footprint, Size, Pin count, etc.

You may also add footprint of different parts to the PCB, add connections, Shapes, Free style routing, Pin, Cut-outs, and much more. Add text to label parts, pins, connections, etc.

The Edit Panel is available on the right side of the UI. At the bottom of the workspace you will find toggle option between Layout, 3D View, main Schematic, etc. View the price of the designed circuit on the top right part of the UI. This circuit design software lets you Save the circuit on your device in .123 format. Print the PCB design if you want. Go to the Help tool for User Guide and Reference Manual.

Download

And now you can click the link below to take free download PCBWEB for PCB Design Software for Windows from original source.


Wednesday, November 2, 2016

Circuit Schematic Audio Visual Indicator for Telephones using BA8204 IC

Eltronicschool. - Now, there are many audio visual indicator design like for telephone system application and other. These design will make everything will easy when using telephone system with the indicator.

In here we will give you one circuit schematic of audio visual indicator system for telephone like in Figure 1 below. The main component in this circuit are BA8204 IC and other components.

Circuit Schematic

Component Part
  1. Condenser Microphone (CM)
  2. Resistors
  3. Switch
  4. Capacitors
  5. Transistors
  6. BA8204 IC
Description

Circuit schematic like in Figure 1 above is Circuit Schematic Audio Visual Indicator for Telephones using BA8204 IC. According ElectronicsZone that published this circuit describe that this circuit does not require any external power source for its operation. The section comprising resistor R1 and diodes D5 and LED1 provides a visual indication of the ring. Remaining part of the circuit is the audio ringer based on IC1 (BA8204 or ML8204). This integrated circuit, specially designed for telecom application as bell sound generator, requires very few external parts. It is readily available in 8-pin mini DIP pack.

Resistor R3 is used for bell sensitivity adjustment. The bell frequency is controlled by resistor R5 and capacitor C4, and the repeat frequency is controlled by resistor R4 and capacitor C3. A little experimentation with the various values of the resistors and capacitors may be carried out to obtain desired pleasing tone. Working of the circuit is quite simple. The bell signal, approximately 75V AC, passes through capacitor C1 and resistor R2 and appears across the diode bridge comprising diodes D1 to D4. The rectified DC output is smoothed by capacitor C2. The dual-tone ring signal is output from pin 8 of IC1 and its volume is adjusted by volume control VR1. Thereafter, it is impressed on the piezo-ceramic sound generator.