Transistors are very important in electronics. They make signals strong and turn things ON/OFF and do many jobs. To check if its good then we need to test them. Testing helps find problems and broken parts. This article for Simple 555 Timer Based Transistor Tester Circuit show easy way to test transistors with 555 timer […]
Timer Circuits
Simple Timer Based Clock Ticking Sound Circuit
This article is about Simple Timer Based Clock Ticking Sound Circuit using IC 555 555 in astable mode make repeat signal like clock tick. Signal goes to small speaker and make ticking sound. Circuit is good for beginner, easy to learn 555 timer and sound making. Circuit Working: Parts List: Component Specification Quantity Resistor 43k […]
Easy DIY Timer Alarm Circuit with 555 IC
IC 555 is very popular and useful chip in electronics. It works in different modes with bistable, astable and monostable. Here we used IC 555 in monostable mode to make a Easy DIY Timer Alarm Circuit with 555 IC. We can set time and after that the buzzer or alarm will ring. It is nice […]
Simple 60 Second Timer Circuit using IC 555
Simple 60 Second Timer Circuit using IC 555 is used to control time in many electric works. This Simple 60 Second Timer Circuit uses 555 timer IC and a famous chip for timing jobs. Press push button and LED turns ON for about 1 minute. This circuit is good for delay lights, fun projects or […]
Arduino 2-Step Programmable Timer Circuit with Independent Output Delay Adjustment
This project for Arduino 2-Step Programmable Timer Circuit with Independent Output Delay Adjustment uses Arduino microcontroller to make simple timer. Not like normal timer with two outputs as this one uses only one output. It switch between two states. And each state have delay which we can change for different use. Circuit Working: Parts List: […]
Power ON Delay Circuit
Power ON Delay Circuit using IC 555 give time gap between power ON and circuit starts. When trigger comes, IC 555 work in monostable mode and give one output pulse for set time. Resistor R1 and capacitor C2 make timing part for delay. Output stay low with circuit OFF when capacitor is charging. When power […]