Simple Refrigerator/fridge Door Alarm circuit
This is a Simple Refrigerator Door Alarm circuit, it will detect light of lamp in the fridge and alert with buzzer.Small size, easy to make and cheapest. […] Read more
Very simple amplifier circuit using transistor 2N3904
It is Very simple amplifier circuit using transistor 2N3904 only, low noise than normal IC circuits, low distortion,frequency response: 20 Hz to 20 kHz. Read more
DIY inductor coil from compact Fluorescent Light
Hi Friends.In the present a small electronics invention. Most of these types of switching circuit. is…An Inductor (or coil) is one device To create problems for me To buy or use. But it is only simply a wire wound into a coil and usually around ferrite core because they have high value and also small. … Read more
LED flashlight circuit or LED torch with 1.5V battery
This high power led flashlight circuit look like torch by 1.5V battery only so it can be used, small so Easy to carry in various places,also very bright […] Read more
AC variable power supply, 0-30V 3A
This is AC variable power supply circuit that apply output of 0-30V at 3A by use electronic components, bridge diode,and more, to control voltage[…] Read more