Installation of surveillance camera systems as a way to deter crimes or criminal acts has gained traction in recent years. In some countries‚ surveillance camera systems – also known as closed circuit television (CCTV) cameras – have also installed in educational institutions as a security measure to address fears for the safety of the students (Hope‚ 2004; Corpuz‚ 2011). The trend‚ however‚ did not stop. From halls and corridors‚ some education institutions have started to install cameras inside
Premium
Low Voltage Analog Circuit Design Techniques: A Tutorial IEEE Dallas CAS Workshop 2000 Edgar Sánchez-Sinencio March 27‚ 2000 http://amsc.tamu.edu/ Texas A&M University Analog and Mixed-Signal Center Low Voltage Analog Circuit Design Techniques: Roadmap Low voltage (LV) power supply circuit design techniques are addressed in this tutorial. In particular: (i) Introduction; (ii) Transistor models capable to provide performance and power consumption tradeoffs; (iii) Low voltage
Premium Transistor MOSFET Electronic engineering
DC-DC Converter Design for Battery-Operated Systems Harry Arbetter. Robert Erickson. and Dragan Maksimovid Power Electronics Group Department of Electrical and Computer Engineering University of Colorado‚ Boulder‚ CO 80309-0425 USA Abstrurt - This paper describes performance‚ design and optimization of de-dc converters for energy limited‚ battery operated systems. Variable-frequency operation is used to achieve voltage regulation and high efficiency for an extremely wide range of load currents
Premium Inductor Capacitor
5 Volt DC Power Supply Rakibul Hassan Department of EEE‚ Ahsanullah University of Science and Technology (AUST)‚ Dhaka‚ Bangladesh. E-mail: rakib_h@y7mail.com Key Words Transformer‚ Rectifier‚ Pulsating DC‚ Ripple voltage‚ Filter‚ Zener diode. Abstract: |Serial No.|Component Details |Specification |Quantity | |1. |Transformer |220V/12V |1 piece | |2. |p-n junction diode |1N4007 |4 piece
Premium Rectifier Direct current
simplicity of this circuit also adds a possibility of some simple audio modulation of the arc. So‚ let’s begin! The quasi-resonant topology But to say the least‚ the first driver I have built with this topology had an AC flyback and an input power supply rated just 60 watts. The result was a compact‚ short-circuit proof‚ high voltage “lab” supply with frequency control‚ some active cooling‚ audio modulation (singing arc‚ or a plasma speaker)‚ two 5-15 kV high voltage outputs (AC and DC) to play with
Premium Voltage Volt Alternating current
Mitchell: talking@tpg.com.au For our other free eBooks: 50 - 555 Circuits 1 - 100 Transistor Circuits 101 - 200 Transistor Circuits 100 IC Circuits For a list of every electronic symbol‚ see: Circuit Symbols. For more articles and projects to suit the hobbyist: see TALKING ELECTRONICS WEBSITE INTRODUCTION This e-book covers a number of interesting circuits. They have been presented for a reason. The original circuits come from an Indian Electronics Magazine and most of them had faults
Premium Capacitor Resistor Transistor
an electronic circuit that fixes either the positive or the negative peak excursions of a signal to a defined value by shifting its DC value. The clamper does not restrict the peak-to-peak excursion of the signal‚ it moves the whole signal up or down so as to place the peaks at the reference level. A diode clamp (a simple‚ common type) consists of a diode‚ which conducts electric current in only one direction and prevents the signal exceeding the reference value; and a capacitor which provides a DC offset
Premium Wave Electric charge
Tutorial 01 DC Ammeter Example 2-2 A 200-µA meter movement with an internal resistance of 550-Ω is used in 0- to 500-mA ammeter. Find the value of the required shunt resistance. Ayrton Shunt Im Rm I - Im Rc Rb Ra I2 I3 I I1 Example 2.3: Compute the value of the shunt resistors for the circuit. Given that Rm = 1.2kΩ‚ Im =150 µA‚ I1=5mA‚ I2=50mA‚ I3=200mA. Check : Rsh = Ra + Rb + Rc always! + - Fig. 3: An Ammeter using Ayrton shunt. Ammeter Insertion Effects
Premium Multimeter Meter
Introduction - Electric circuit theory is one of the fundamental theories upon which all branches of electrical engineering are built. - Many branches of electrical engineering‚ such as power‚ electric machines‚ control‚ electronics‚ communications‚ and instrumentation‚ are based on electric circuit theory. - In electrical engineering‚ we are often interested in transferring energy from one point to another. - To do this requires an interconnection of electrical devices. - Such interconnection is
Premium Electrical impedance Resistor
DIWALI LIGHTS The Basic Circuit [pic] FIGURE 1 As you can see in the above diagram that IC LM4017 will give 10 different O/P’s. Now here I have used this circuit for a 5 Channel Sequencer (The word sequencer seems very tough but the circuit is as simple as you can think). Looking at the Data Sheet of IC LM4017 we observe that we do not need any extra components to drive this IC (and that is what makes our CKT very compact). [pic] Now build 11 circuits as mentioned in FIGURE 1
Premium Time Periodization Alternating current