Seven Segment Counter Circuit is one simple circuit. It count numbers and show on seven segment display. When we press button number goes up by one. It is very easy to make and good for learning how counting works in electronics. What is a Seven Segment Counter Circuit: Seven segment counter circuit is small electric […]
Meters and Testers
Simple Universal Signal Generator Circuit
If we want to make sound generator circuit for cheap? Then this post for Simple Universal Signal Generator Circuit show easy way to build using transistors. These type of circuits are good for: We can make this circuit at a very low cost. What is a Universal Signal Generator Circuit: Universal Signal Generator circuit is […]
Simple Logic Probe Circuit using Transistors
This article for Simple Logic Probe Circuit using Transistors tell how to make one useful tool called voltage tester. It uses two transistors for checking if some place in circuit have positive voltage. When it find electricity it makes beep sound and small light turns ON. People who want to learn electronics, this tool will […]
Tester Probe Circuit
Many people think multimeter can test any electric part. But this not always safe especially for semiconductor. This article for Tester Probe Circuit show how to make one easy and safe tester only for semiconductor. This tester is easy to build and uses small current which is good to test many type of semiconductor. What […]
Crystal Tester Circuit
Did anyone ever think how quartz watch or radio keep time so good? It uses one special thing called crystal oscillator. This post for Crystal Tester Circuit show how to make small tester to check if crystal is working or not. Tester are made with simple parts like transistor, resistor and capacitor. WARNING: Making electric […]
Continuity Tester Circuit
This Continuity Tester Circuit uses two transistor like small switch for checking wire is good or bad. We just need battery and one LED light. One side touches to battery other side touches the wire. If wire is okay, then current connects through and light will ON. That mean electricity flows without stopping. If wire […]