Tsukure Studio Simple Audio Amplifier

The 555 time IC is very powerful and versatile IC, it can be used in many forms. In this tutorial we are going to see how a 555 IC can be used as Audio Amplifier. A low power audio signal can be amplified using 555 Timer IC.

This circuit is divided into two parts: part one is Preamplifier circuit, which consist a BC547 transistor, a Condenser Mic and some resistors & capacitors. Second part consist a 8ohm speaker and a 555 timer IC, which is oscillating in Astable multivibrator mode, with approx. 66KHz frequency.

Components used in this module...

Find out more about the components used in this STEM Module.

Let's Get Started!

Below you will find a list of bits to gather before hand, followed by a detailed schematic. Using a breadboard lay out the components and connect them together as shown. Alternatively you can purchase this module from our shop and simply solder the components in the places indicated on the quality assured printed circuit boards provided.


What You Need...


1 102 (1000pF / 1nF / 0.001uF) Capacitor (Ceramic)
1 104 (100nF / 0.1uF) Capacitor (Ceramic)
2 10uF Capacitor (Polarized)
1 555 Timer Integrated Circuit (IC)
1 Electret Microphone Microphone
1 100K
[ Brown, Black, Black, Orange ]
Resistor (0.25 Watt)
1 10K
[ Brown, Black, Black, Red ]
Resistor (0.25 Watt)
1 1K
[ Brown, Black, Black, Brown ]
Resistor (0.25 Watt)
1 470R
[ Yellow, Violet, Black, Black ]
Resistor (0.25 Watt)
1 47K
[ Yellow, Violet, Black, Red ]
Resistor (0.25 Watt)
1 680K
[ Blue, Gray, Black, Orange ]
Resistor (0.25 Watt)
1 BC547 Transistor (NPN)

NB: Any resistor colour codes specified relate to 5 band resistor codes, the 5th band has not been shown intentionally. The 5th band indicates the resistor tolerence, we use only the highest tolerence resistors in our products.


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Just An Idea!

This project is currently just an idea, a prototype! This is how we begin our journey of discovery and welcome you to join us.

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Additional Resources


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