Light Controlled Sound Effects
Review: 5 - "A masterpiece of literature" by , written on May 4, 20020
Great

Light Controlled Sound Effects

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  • Product SKU: LGKT062
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  • Product Code: LGKT062
  • Technical Support: upto 30mins Video support
  • Handmade
  • Make in India
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Details
  • Unsoldered PCB and all components to be soldered on PCB.
  • Includes all ICs, Connecting wires, and sensors.
  • Documentation: PCB Specifications, Component list, and Circuit diagram.
  • Power Supply: No battery included, Includes 12 Volt DC adapter with the kit.
  • Video tutorial is available on YouTube.
  • One set of the readymade in working condition.
  • Includes all ICs, Connecting wires, and sensors.
  • Documentation: PCB Specifications, Component list, and Circuit diagram.
  • Power Supply: No battery included, Includes 12 Volt DC adapter with the kit.
  • Video tutorial is available on YouTube.

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Specification

Description

The 555 amplifiers kit can be used as an amplifier. This first block is the power supply in the input is 230V AC which is step down using the transformer (12-0-12). The 12V ac input is fed to the bridge diode to gives 12V pulsating DC. This DC voltage is filtered through the capacitor to remove the ripples. The filtered DC is fed to the 7812 regulators to fetch +12v regulated output.

The Light Controlled Sound Effects Kit 555 amplifiers is in the normal mode, we just open-circuit the 5th pin (Control voltage pin) of 555 IC. But the most interesting fact we often neglect is that if a low-frequency signal is applied to the 5th pin of 555 IC, pulse width modulation starts. Here the oscillating frequency of 555 astable is approximately 145 kHz. The discharge time of the capacitor via diode 1N4007 is too fast since there is no resistor to discharge. The condenser MIC is used as a transducer to sense the incoming audio signals and convert them to proper electrical signals. The output of the MIC is then fed to the transistor via a capacitor. This capacitor is used to remove the DC component of the signal.

The Effects Sensors Kit resistor provides the necessary biasing to the condenser microphone. And the resistors R2 and R3 give potential divider bias to the BC547 transistor. The capacitor C2 and resistor R4 provide negative feedback to the transistor circuit which is essential for amplification. The pre-amplified audio signal is fed to the control voltage pin of 555 timer astable multivibrator running with 145kHz.The process of pulse width modulation starts and as we know the speaker does not respond to this much high frequency, it responses to the usual DC value of the modulated output. Hence the audio signal gets amplified.

 

Block Diagram

LGKT062

Physical Attributes

  • Dimensions (cm) L x W x H : 20 x 15 x 5
  • Weight (gm): 200

Product Video

Customer Reviews

Based on 3 reviews
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(3)
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S
Sk.khajaramthulla
Project

Project is good working

A
ANITA SONI
Everything

Everything is very intuitive;

N
Nadim Hoque
Box

In the box there is a nice sheet of paper that shortly describes every detail stored in the box