Most of the TTL ICs are working on 5V. Many methods are there to design a 5V stabilizer circuit. Here, we are introducing a simple DIY board by which even the starters could easily design a 5V regulated voltage supply.

Components required

• Printed Circuit Board – 1
• 7805 voltage regulator IC – 1
• Screw terminal 5mm – 2
• 0.33 micro Farad capacitor –

A simple module based on 555 timer IC, which will help you to make an LED flasher / Astable multivibrator easily.

Package includes :

• PCB
• 555 timer IC
• C1 – 10 Micro Farad
• 0.01 Micro Farad capacitor
• R1 – 10K
• 1K resistor
• POT 2 – 1 Mega Ohm
• LED

Assemble the circuit as shown below.

Introduction

7-Segment displays are always interesting to electronic beginners. Various methods are there to interface 7-segment displays in circuits. 7-Segment displays are of two types.

• Common anode 7-segment display
• Common cathode 7-segment display

74LS47 is a BCD to 7-segment decoder/driver which can be used to interface common anode 7-segment displays in circuits. Here, we will see a module using 74LS47 by which we can make a 0-9 counter in few simple steps.