3. glow an led
•
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This document describes an experiment to build a simple circuit on a breadboard to glow an LED. The materials needed are a breadboard, LED, 330 ohm resistor, 9V battery, and connecting wires. It provides step-by-step instructions to connect the LED, resistor, and battery on the breadboard. When complete, the LED should glow, indicating the circuit is working as intended. Troubleshooting tips are provided in case the LED does not light.
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The document describes using a BJT as a switching device in a circuit. The aim is to build the circuit and plot its response. The procedure involves connecting the circuit with a BJT, resistor R0 and R1, applying a 6V 500Hz square wave input with 6V offset and 12V DC supply. Running a time domain analysis shows the input is inverted at the output, with the output at 12V when the input is 0V and vice versa, demonstrating the BJT working as a switch.
Build your own electronics lab
If you are new to electronics field, then here are some simple tips of the components and parts you will need in the beginning, though its not everything but at least you can combine info from here with other resources you get from the web, hope its useful.
dokumen.tips_design-a-voltmeter.pptx
This document describes the design of a voltmeter circuit that can measure unknown voltages between -9V and +9V and display the reading on a 10-segment LED display and indicator LEDs. The circuit uses operational amplifiers as voltage comparators to compare the unknown voltage to reference levels and illuminate the appropriate LED segments. Students are tasked with designing the voltage divider circuits to generate the reference levels, limiting current to the LEDs, and incorporating circuits for the indicator LEDs. PSpice simulations and calculations are required in a pre-lab report, and the full circuit design including troubleshooting is documented in a lab report.
Switchgear and protection - lab
The document summarizes the results of two experiments conducted to identify various types of fuse sets and measure fuse wire sizes.
In the first experiment, various fuse sets were identified including HRC, DO, 33KV fuse sets. HRC fuses use ceramic bodies and powder fillings to reduce arcs. DO fuses use fiberglass tubes and have lower melting points. Horn gap fuses are outdoor mounted for transformers.
The second experiment measured fuse wire gauges using an SWG table to determine current ratings. Fuse wires of various gauges were measured and their current ratings according to standards were recorded.
7.3.2.6 lab build and test network cables
This document provides instructions for building and testing straight-through and crossover Ethernet cables using unshielded twisted pair (UTP) wiring. It outlines the necessary equipment, describes the T568A and T568B wiring standards, and gives step-by-step directions for constructing the cables and using various tools to test them.
BTC108 3 Capacitance
This document discusses capacitance and capacitors. It defines capacitance as the ability of a system to store electric charge, and explains that capacitors store energy in an electric field between two conductive plates. It then provides equations for calculating capacitance and charge, describes common capacitor types, and explains how capacitors behave in series and parallel circuits. The document also discusses how capacitors charge and discharge over time depending on resistance and explores applications of capacitors in power supply circuits.
Electrical Common Test Procedure.ppt
This document outlines several electrical tests that should be performed, including:
1. An insulation test to ensure resistance is over 0.5MΩ at 500V dc and can withstand 2kV ac, with leakage current under 1mA.
2. A continuity test to confirm measured values are less than specified limits.
3. A polarity test to ensure wiring is correctly connected to outlets with the live connection to the phase and neutral to the neutral conductor.
4. An earth resistance test and phase sequence test to check earth connections and phase rotation, along with voltage measurement.
5. An earth loop impedance test to ensure measured values are below maximum limits.
Cable preparation in CCTV
This document provides steps for properly preparing coaxial cable and terminating connectors for use in CCTV systems. It discusses that transmission media such as cable, connectors and installation methods account for over 65% of failures in CCTV systems. The document then provides 10 detailed steps for stripping cable, attaching connectors, testing connections, and labeling cables to help ensure optimal video quality and troubleshooting. Key steps include properly stripping cable, flaring the braid, crimping the connector, checking resistance values during testing, and labeling both ends of cables.
4. exp.2 rotary encoder
The document describes designing a circuit to control the brightness of LEDs using a rotary encoder and Arduino. It involves connecting a rotary encoder and 4 LEDs to an Arduino board. An Arduino program is written to read the rotary encoder position and adjust the PWM output to the LEDs, varying their brightness as the encoder is turned. The circuit allows increasing or decreasing the brightness of multiple LEDs simultaneously using a single rotary encoder.
Fk245 te 3-a3
- This document provides instructions for assembling and testing a light activate alarm circuit kit from Future Kit.
- The circuit uses a phototransistor that generates a voltage when light shines on it, disabling some transistors and enabling others to generate a frequency that triggers an alarm with a speaker and LED.
- Assembly instructions explain how to correctly install the various electronic components like resistors, capacitors, transistors, and diodes on the circuit board based on their polarity and size. Testing involves powering the circuit and verifying that light on the phototransistor activates the alarm while covering it deactivates it.
Singapore Power
This document summarizes a student's two-month industrial attachment with SP PowerGrid Ltd from December 22nd 2014 to March 27th 2015. The student was placed in the Customer Project East section under Zone 3, which covers the eastern part of Singapore. Their responsibilities included testing and commissioning of low voltage boards and overhead ground boards, assisting with service connections and major works projects, and recommending improvements to processes. Safety is the highest priority at SP PowerGrid, and they conduct monthly safety talks and distribute safety pledge cards.
Dzb200 M&J最新(2)
The document provides an overview of the DZB200 inverter covering receiving, storage, transportation, nameplate information, and safety cautions. It discusses the inverter's mechanical and electrical installation, operation, function parameters, fault diagnosis, and quality guarantees over multiple chapters.
LAB MANUAL
This document contains information about experiments to be performed on logic gates and flip flops using integrated circuits. It includes:
- An introduction to the breadboard and safety procedures for building circuits.
- Details of common logic gate ICs such as AND, OR, NOT, NAND and NOR gates.
- Details of flip flop ICs such as D and JK flip flops.
- The aim and apparatus required for an experiment to verify the truth tables of logic gates and flip flop operations.
- Descriptions and truth tables of logic gate and flip flop operations.
Digital Electronics Lab
The document provides instructions for students on experiments in a digital electronics lab. It outlines 10 experiments that students will perform, including verifying logic gates, realizing half/full adders and ripple counters, and building multiplexers and flip-flops. The document also provides guidelines for lab safety, building circuits using breadboards, and maintaining lab notebooks for documentation. Students are instructed to work in an organized manner and obtain permission before operating equipment.
Similar to 3. glow an led (20)
3. glow an led
- 2. Experiment 3: Glow an LED
- 4. Materials Required i. Breadboard ii. LED-‐1 iii. Resistor: 330 Ω-‐1 Color Code: 330 – Orange Orange Brown Gold iv. 9V BaEery-‐1 v. ConnecHng Wire Pieces
- 6. Step No. 1 Take a breadboard.
- 7. Step No. 2 Connect a 9V baEery on the breadboard.
- 8. Step No. 3 Connect an LED on the breadboard.
- 9. Step No. 4 Connect the posiHve terminal of the LED to Vcc (posiHve terminal of the baEery).
- 10. Step No. 5 Connect one of the legs of a 330 Ω resistor to the negaHve terminal of the LED and its other leg on the breadboard.
- 11. Step No. 6 Connect the other leg of the resistor to ground (negaHve terminal of the baEery).
- 12. Complete Circuit The LED glows, hence the circuit is complete.
- 13. ObservaFon CongratulaHons !!! You have successfully built your first project on the breadboard. If the LED glows, this means your circuit is working well.
- 14. TroubleshooFng Tips • Ensure that your baEery voltage is more than 5 volt. • Ensure that the wires of your baEery connector are properly inserted into the breadboard. Red wire should be inserted into the first row and black wire into the second row of the breadboard. • Ensure that the LED is in a working state. • Ensure that the posiHve terminal (longer leg) of the LED is connected to Vcc, not the other way around. • Ensure that the stripped ends of the connecHng wires are long enough to fit inside the holes of the breadboard. • Ensure that there are no loose connecHons.
- 16. Result Circuit PrecauFon Measure Notes AcFvity Advantages ModificaFon Did you know?