LEDs mostly make light but they can also sense light! Like a secret power, when light hits an LED in the right way, it generates a small amount of electricity; scientists call this phenomenon the photovoltaic effect, which works like a tiny solar panel. In this post for How to use an LED as a […]
Mini Projects
Simple Speaker Audio Output Transformer Circuit
Imagine our voice is strong but we whisper through a tiny straw to reach our far friend but it wont work. Same is in circuit for Simple Speaker Audio Output Transformer Circuit which works like a megaphone for sound signal. Furthermore, it takes strong signal from amplifier and changes it to fit the speaker so […]
Simple Transistor Tester Circuit
Transistors are small switches; but how to check if they work or what type they are? then this Simple Transistor Tester Circuit is like a transistor checker. It is an easy DIY project which uses few parts and it also tells us if transistor is good or bad and also shows if its NPN or […]
Simple CFL Driver Circuit
CFL bulb need special helper circuit to turn ON and glow bright, as this Simple CFL Driver Circuit change home electricity into power CFL can use. Furthermore, CFL bulb uses little mercury vapor to make invisible light and then it hits special powder to make light we see. Circuit Working: Parts List: Components Values Quantity […]
Simple Circuit to keep a Battery Topped Up
Think of a battery like water tank for our device. This Simple Circuit to keep a Battery Topped Up is like a helper, which checks battery level and gives charge when battery gets low. Also, battery stays full and is ready always which is good for backup power, solar lights and for wireless toys. Circuit […]
Automatic Battery Charger with Trickle Charger Circuit
What if charger is smart? and if it fills battery by itself and keeps it full, but not too much. That is what Automatic Battery Charger with Trickle Charger Circuit does; it has part that checks battery power and if battery is low it sends power to fill. When it is full it gives little […]