Wednesday, January 11, 2017

Circuit Schematic Mobile Phone Battery Emulator using LM317 IC

Eltronicschool. - This is one electronic circuit schematic for you using voltage regulator IC LM317. This circuit title with Mobile Phone Battery Emulator using LM317 IC look like in Figure 1 below.

In this tim, beside we will give you global description about electronic circuit schematic of Mobile Phone Battery Emulator using LM317 IC, and we also will give you circuit schematic and component part.

Circuit Schematic

Component Part
  1. LM317
  2. Resistors
  3. Capacitors
  4. LED
  5. Variable resistor
Description

Circuit schematic like in Figure 1 above is Mobile Phone Battery Emulator using LM317 IC. With this circuit schematic, now you can build a battery emulator that would enable him to test and run a Li-ion battery-powered mobile phone without using its battery pack.

How it works

According Electroschematics site describe that the typical target voltage of the Li-ion battery is 4.2 V (note that the target voltage is not the same as the nominal voltage, as it is 3.7 V typical). An adjustable voltage regulator is designed as the mobile phone battery emulator. The circuit based on the popular three-pin adjustable voltage regulator LM317T (IC1) receives external dc input of 9 V/2 A through input connector J1. The output voltage available at connector J2 can be adjusted from just below 3 V to just above 4 V with the help of the 500-Ω multi-turn preset pot (RP1). Although most devices powered by Nokia batteries appear to work well at about 4.2 V, a little bit of experimentation with the values of resistors R2-R3-RP1 may be necessary. As stated earlier, the 82-kΩ resistor (R4) is essential to fooling the device into thinking that a real battery is attached at its battery connector.

Thursday, January 5, 2017

Digital Design 2nd Edition by M. Morris Mano - Free Download E-book

Eltronicschool. - This is one of the best book for you who want to learn more about digital design in this time. This book is Digital Design 2nd Edition that authored by M. Morris Mano.

Image Courtesy of Amazon.com
In this time, beside we will give you global review about Digital Design 2nd Edition by M. Morris Mano, we also will give you the link to take free download e-book of Digital Design 2nd Edition by M. Morris Mano from external server.

Description

From: Free-Engineering-Book

For this edition, eight chapters have been substantially revised by adding new topics and deleting those that are obsolete. An entirely new chapter presents IEEE Standard graphic symbols for logic elements recommended by ANSI/IEEE Standard 91-1984. In addition, new problems have been formulated for the first seven chapters, and new experiments have been added to Chapter 11. Providing coverage of the design procedures for combinational circuits, synchronous and asynchronous sequential circuits, the book covers the following topics: signed binary numbers and the design of state machines using D flip-flops; procedures for converting AND-OR diagrams and NAND or NOR diagrams and the internal construction of the programmable array logic (PAL); random access memory (RAM) and the Hamming error correcting code; and the CMOS transmission gate.

Table of Contents:

  1. BINARY SYSTEMS
  2. BOOLEAN ALGEBRA AND LOGIC GATES
  3. SIMPLIFICATION OF BOOLEAN FUNCTIONS
  4. COMBINATIONAL LOGIC
  5. MSI AND PLD COMPONENTS
  6. SYNCHRONOUS SEOUENTIAL LOGIC
  7. REGISTERS, COUNTERS, AND THE MEMORY UNIT
  8. ALGORITHMIC STATE MACHINES IASMI
  9. ASYNCHRONOUS SEQUENTIAL LOGIC
  10. DIGITAL INTEGRATED CIRCUITS
  11. LABORATORY EXPERIMENTS
  12. STANDARD GRAPHIC SYMBOLS

Download

And now you can click the link below to take free download e-book of Digital Design 2nd Edition by M. Morris Mano from external server easily.

Friday, December 30, 2016

Circuit Schematic Small Induction Heater using NE555 IC for School Project

Eltronicschool. - This is one application of ordinary 555 IC for generating pulse (PWM) easily. Output of this pulse will be used to trigger NPN transistor for induction heater.

In this time, based on NE555 iC as PWM generator, we will give you one of electronic circuit schematic of Small Induction Heater using NE555 IC for School Project like in Figure 1. below.

Circuit Schematic

Component Part
  1. NE555 IC
  2. LED
  3. Capacitors
  4. Resistors
  5. NPN Transistor
  6. Inductor heater
  7. Diode
  8. Variable resistor
Description

Circuit schematic like in Figure 1 above is Small Induction Heater using NE555 IC for School Project. So, for you who want to build your self school project for heater generator, you can use this circuit as your reference. This circuit using major component as the ordinary IC NE555.

How it works

According HomeMade-Circuit site describe the working coil here is made by winding around 50 turns (not critical) of 1mm super enameled copper wire over a fabricated iron pipe whose dimensions may be selected as per individual preference, and could be anywhere between 10 to 20 cm in diameter and 30 to 40 cms long.

Once the above set up is built and switched ON, the coil and the iron pipe could be seen developing heat gradually, and anything placed inside the pipe could be witnessed getting heated up.

If it's water inside the pipe, then it could begin warming up and even reach the boiling point if the coil is optimized correctly through the frequency and PWM adjustments.

The idea behind this small induction heater circuit is simple, it is to force the iron pipe atoms to electromagnetically oscillate at an incompatible frequency resulting in the production of huge amounts of opposing eddy currents and a proportionate amount of heat due to this opposing current in the metal.

Saturday, December 24, 2016

Free Download CircuitMaker for PCB Layout Designing Circuit for Windows

Eltronicschool. - This is one of free PCB layout circuit design software for electronic project for you want to use this software easily and freely. This software named with CircuitMaker for Windows system.

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 CircuitMaker for PCB Layout Designing Circuit for Windows from official site easily.

Description

This is CircuitMaker for PCB Layout Designing Circuit for Windows for you. Accordingly Listoffreeware site describe that Circuitmaker is another free software to design PCB circuits on Windows. To be able to use this fantastic circuit design software, you will have to sign up on its website first. Launch the application and sign in with the ID. It is a desktop based online software which needs internet to work. Create a new project to start circuit design on this EDA software.

It has a very interesting feature of collaboration, where you can work on project as team. Add team members to your project, and all members can collaborate to work together on an electrical design project. To create a Team project, select the Team option while creating project, assign its attributes, and then add members.

The design is only saved online, and not on your device. When your project is complete on this circuit design software for Windows, you can release it to be viewed by anyone, or submit to collaborate with selected members.

Download Software

And now you can click the link below to take free download CircuitMaker for PCB Layout Designing Circuit for Windows from official site easily.



Saturday, December 17, 2016

Circuit Schematic 2.5A Bipolar Stepper Motor Driver using A3979 IC

Eltronicschool. - This is one of bipolar motor stepper driver circuit schematic for you who want to build your self motor driver for motor stepper. This driver motor stepper named with circuit schematic of 2.5A Bipolar Stepper Motor Driver using A3979 IC like in Figure 1 below.

In this time, based on A3979 IC for motor driver IC, we will give you one of electronic circuit schematic of 2.5A Bipolar Stepper Motor Driver using A3979 IC and also component needed and small description about this circuit.

Circuit Schematic

Component Part
  1. A3979 IC
  2. Jumper
  3. Resistors
  4. LED
  5. Capacitors
  6. Connector Pin
Description

Circuit schematic like in Figure 1 above is 2.5A Bipolar Stepper Motor Driver using A3979 IC. Depending Electronics-Lab site describe that the tiny board designed using A3979 IC from ALLEGRO which is complete micro stepping driver with built in translator. The translator is the key to the easy implementation of the A3979. It allows the simple input of one pulse on the STEP pin to drive the motor one micro step, which can be either a full step, half, quarter, or sixteenth, depending on the setting of the MS1 and MS2 logic inputs. There are no phase-sequence tables, high-frequency control lines, or complex interfaces to program. The A3979 interface is an ideal fit for applications where a complex microprocessor is unavailable or is overburdened. 

Sunday, December 11, 2016

Circuit Schematic DC Bursh Type Motor and Direction Controller with Brake using MC33035 IC

Eltronicschool. - Maybe you are still not familiar with this title that called DC motor controller with brake for your electronic project. But, in here we will really using term brake for DC bursh type motor and direction controller using MC33035.

We aren't forgot that here, we will show you one electronic circuit scheamtic of DC Bursh Type Motor and Direction Controller with Brake using MC33035 IC like the Figure 1 below. And the main component used in this circuit is MC33035 IC.

Circuit Schematic

Component Part
  1. MC33035 IC
  2. LED
  3. Resistors
  4. Switch
  5. Diode
  6. Capacitors
  7. Variable Resistor
  8. DC Motor
  9. MOSFET
Description

Circuit schematic like in Figure 1 above is DC Bursh Type Motor and Direction Controller with Brake using MC33035 IC. We mentioned again that the main component here is MC33035 IC. This component usually are be used to controll burshless DC motor, but this iC also can be used to controll usual DC  motor like in Figure 1 above.

According Electronics-Lab site describe that  MC33035 driving a Mosfets based H-Bridge affording minimal parts count to operate a brush type motor. On board potentiometer provided for speed control, slide switch for direction control and brake, On board jumper available to enable the chip. The controller function in normal manner with a PWM frequency of approximately 25Khz. Motor speed is controlled by adjusting the voltage presented to the non inverting input of the error amplifier establishing the PWM’s slice or reference level. Cycle by cycle current limiting of the motor is accomplished by sensing the voltage across the shunt resistor to the ground of H-bridge. The overcurrent sense circuit makes it possible to reverse the direction of the motor, using normal forward/reverse switch, on the fly and not have to completely stop it before reversing. 

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.