Sunday, April 23, 2017

Simple Low/High Voltage Cut Circuit Based on Transistor

Electronic Kit School. - In electronic field there are many project with simple and expert circuit to protect the circuit from dangerous. The safety circuit usually build using IC and also transistor with it's all advantages. 

In here we will show you one of the simple low and high voltage cut circuit using two transistors that control the relay on and off. The circuit mentioned look like shown in Figure 1 below.

The main component to build this circuit are two transistor type NPN which popular today. In this time, beside we will show you the circuit, here we also will show you component part and global description about this circuit.

Circuit 

  1. R1, R4 = 4.7 KΩ
  2. R2, R3 = 220 Ω
  3. VR1 = 10 KΩ
  4. VR2 = 10 KΩ
  5. T1, T2 = BC148
  6. ZD1, ZD2 = 5.6V
  7. RL1 = 18V/500Ω
Description

Circuit like in Figure 1 above show you about the simple low/high voltage based on transistors. From Electronicsproject site describe that the entire circuit is build using only two transistor and very few other component. The two transistors are used to drive relay. Transistor T1 and T2 cut the supply in high and low voltage respectively. Variable resistor VR1 and VR2 is used to adjust the high and low voltage. As we know that when zener diode is connected to emitter of transistor then it get back bias voltage. The variable resistor VR1 and VR2 is so adjusted that it does not connect the transistor T2 and T1 in high and low voltage respectively. The load is connected through relay RL1.

Saturday, April 15, 2017

High Precision Frequency and Voice Detector Circuit using LM567 IC

Electronic Kit School. - Maybe one of the useful radio categorize circuit that you need in this time is how to detect high frequency and voice using simple component. One of the IC that can do this work is LM567 IC that can be used for detecting frequency with high precision and it also detects voice.

In this article we will show you one of the circuit of high precision frequency and voice detector using the main component LM567 IC look like in Figure 1 below. You can realize this circuit easily for the first electronic project now.

The main component to build this circuit is one again we mentioned LM567 IC which popular today. In this time, beside we will show you the circuit, here we also will show you component part and global description about this circuit.

Circuit 

  1. R1 = 22 KΩ
  2. R2, = 10 KΩ
  3. R3 = 1 KΩ
  4. C­1, C2 = 0.1 µF
  5. C3 = 1 µF/16V
  6. C4 = 2.2 µF/16V
  7. IC1 = LM567
  8. D1 = LED
  9. D2 = 1N914
  10. 6V relay
Description

Circuit like in Figure 1 above show you about the high precision frequency and voice detector using the main component LM567 IC. From Electronicsproject site describe that the main part or heart of the circuit high precision frequency and voice detector is IC LM567 which comprising a phase locked loop (PLL), and detect frequency range between 0.01 Hz to 500 kHz. The value of detection of frequency and voice detector can be changed by changing the value of low-pass-capacitor. The formula for calculating the value of low pass capacitor is

L.C = n/Fr

Where Fr = 1.1/(R2 * C2), while n= 1300 for two percentage detection bandwidth and 6300 for 14 percentage. 1.1 kHz PLL running frequency is set by R2 and C2.

Wednesday, April 5, 2017

Engineering Books: Essentials-of Mechatronics First Edition by John Billingsley - Free Download

ElectronicKitSchool. - This is one of mechatronic engineering book categorize that titled with Essentials-of Mechatronics First Edition that written and authored by John Billingsley.

Image Courtesy of Amazon.com
This article will show you the reviewing of Essentials-of Mechatronics First Edition by John Billingsley like book description and table content. The last in this article we also will give you link to take download e-book of Essentials-of Mechatronics First Edition by John Billingsley freely.

Overview

From Free Engineering Books describe that Essentials of Mechatronics by John Billingsley book presents the essential nature of mechatronics, a field at the crossroads of information technology, mechanical engineering, and electrical engineering. By reading this book, readers learn how to blend mechanisms, electronics, sensors, control strategies and software into a functional design. The book gives the breadth that the field of mechatronics draws upon, this eBook provides a critical service to readers by paring down the topics to essential ones.

Table of Contents:

Front matter

  1. Introduction
  2. The Bare Essentials
  3. Gaining Experience
  4. Introduction to the Next Level
  5. Electronic Design
  6. Essential Control Theory
  7. Vectors, Matrices, and Tensors
  8. Mathematics for Control
  9. Further Control Theory
  10. Computer Implementation
  11. Machine Vision
  12. Case Studies
  13. The Human Element
Index


Download E-book

Here, we provide you some the links to download e-book ofEssentials-of Mechatronics First Edition by John Billingsley from external server. So, if you fail to use one link or the link broken you can choose other link to download it. Please click the icon below to start downloading.


Essentials-of Mechatronics First Edition by John Billingsley