RC_circuit ‹ BUILD CIRCUIT

2

Clap switch using 3 different modules

May 09 in Basic Electronics, LDR Engineering, MINI Breadboard, Recent Written by: Sagar Sapkota

Description: In this clap switch we use three different modules given below. It is necessary to make these three modules in order to make a clap switch. a. Dark sensor using 2 transistors. b. Monostable mode of 555 timer. c. Toggle switch using 555 timer. Now, follow these steps: Step 1: Connect 555 timer dark sensor (monostable module) t0 2 transistors module. Remove LDR and resistor 4.7K (connected between Pin 2 and GND) from 555 timer based dark sensor circuit(given...

1

RC module

May 08 in Basic Electronics, LDR Engineering, MINI Breadboard, Recent Written by: Sagar Sapkota

Description: An RC circuit is used to introduce time delay in circuits. A combination of resistor and capacitor gives a time constant. The following circuit shows a basic RC circuit. In the figure C1(100uF) works as a storage capacitor. When you press the switch, the capacitor charges quickly and provides base current to the transistor Q1, that results in collector current and that glows the LED D1.. The resistance R2(1K) provides a time constant of around 10seconds. After 10seconds, the base...

1

Basic remote tester

May 07 in Basic Electronics, LDR Engineering, MINI Breadboard Written by: Sagar Sapkota

Description: This circuit can be used for testing your TV, DVD, VCD, etc. remote control. This is the fundamental module for making infrared based object counter. This project has been derived from "Remote tester project" . DATASHEET OF TSOP4838 According to the datasheet of TSOP4838, the input voltage to IR sensor should be 3V-5V. When the sensor gets infrared signal, the voltage at its VO pin drops and that triggers the BC557 transistor. At each trigger signal, BC557 glows the LED....

0

Multivibrator module

May 06 in Basic Electronics, LDR Engineering, MINI Breadboard Written by: Sagar Sapkota

Description: A multivibrator has identical components(capacitors, transistors and resistors) arranged on the left and right hand sides that can be used to implement a variety of simple two-state systems such as oscillators, timers and flip-flops. In a multivibrator circuit, increasing the value of the two electrolytic capacitors increases the time each LED remains on/off. In the example given below, NPN transistors(BC547), capacitors and resistors have been used. This particular project...

1

Melody generator using UM66

May 05 in Basic Electronics, LDR Engineering, MINI Breadboard Written by: Sagar Sapkota

Description: UM66 or BT66 is a musical IC. The following circuit generates a melody using UM66. This module can be used in a number of projects like, light operated musical bell, remote bell, infrared based music transmitter and receiver, etc. In this particular project module, whenever the tactile switch is pressed, the circuit starts playing music. Datasheet of UM66 Articles related to UM66: How to use UM66 Melody generator circuit About UM66 WATCH...

0

Basic RC circuit

Nov 17 in LDR Engineering Written by: Sagar

Basic RC circuit Using an RC circuit, we can keep an LED on for specific time as determined by resistors R1, R2 and capacitor C1. As we press the Push-to-On switch, the capacitor C1-1000uF gets charged and it gives biasing voltage to the transistor Q1 through resistance R2-1K. As we leave the switch, the LED keeps on glowing because of the charge present in the capacitor. Discharging rate of capacitor is determined by the resistor R1 and R2, hence it also determines the timing of RC circuit. The charge...

2

Mode of NE555- Astable

Nov 16 in LDR Engineering Written by: Sagar

This circuit has been configured in Astable mode. The output pulses are determined by the values of resistors R1, R2 and the timing capacitor C1. The formula for the frequency of pulses is: f= 1.44/[(R1+2R2)*C1]. The high and low time of each pulse can also be calculated. High time= 0.69(R1+R2)*C1 and Low time= 0.69(R2*C1) Automatic Blinker Automatic blinker comprises two modules. First is the dark detector circuit and the other is a multivibrator configured in astable mode of operation....

2

Sound generator and Musical toy organ

Nov 16 in LDR Engineering Written by: Sagar

One of the main objectives of LDR Engineering projects is to make students capable of developing their own logic for making devices. Here is an example that tells how LDR Engineering helps in developing ideas. The figure below shows the schematic for making ‘Sound generator using 555 and LDR’. It is based on astable mode of 555 timer. This circuit can be used to understand how resistance plays an important role in the output frequency of NE555 timer. The main idea is to change the resistance...

RC_circuit

Clap switch using 3 different modules

RC module

Basic remote tester

Multivibrator module

Melody generator using UM66

Basic RC circuit

Mode of NE555- Astable

Sound generator and Musical toy organ

Search

Flickr photostream

Connect with us

Categories

Recent Posts

Recent Comments

Connect with us

UserOnline

Links

UserOnline

RC_circuit

Search

Flickr photostream

Connect with us

Categories

Recent Posts

Popular Posts

Recent Comments

Tags

Connect with us

UserOnline

Links

UserOnline