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This circuit can be used to construct an attractive Christmas Star. When we switch on this circuit, the bright......
This simple and inexpensive circuit built around a popular CMOS hex inverter IC CD4069UB offers four sequentia......
Here is a simple circuit which can be used for decoration purposes or as an indicator. Flashing or dancing spe......
This circuit uses three easily available 555 timer ICs. All three work as astable multivibrators. The first 55......
This circuit could be used for replacing your manual volume control in a stereo amplifier. In this circuit, pu......
Opamps are very useful. But one of their major drawbacks is the requirement of a dual supply. This seriously l......
It is well know that pests like rats, mice etc are repelled by ultrasonic frequency in the range of 30 kHz to ......
programmable code lock can be used for numerous applications in which access to an article/gadget is to be re......
ust point this small device at the TV and the remote gets jammed . The circuit is self explanatory . 555 is wi......
ere is a versatile circuit of IF signal generator which may be of interest to radio hobbyists and professional......