Here the notebook anti theft protector circuit to secure your important netbook / notebook from stealing. Basically, this is a…
Here the SW transmitter circuit based on IC BEL1895. This particular transmitter circuit works in shortwave HF band (6 MHz…
The following schematic diagram is the circuit of solidstate automatic power-off on mains failing. A really good number of circuits…
This is the door bell circuit with flashing LEDs to make the circuit more attractive. IC1 (NE555) is applied right…
Here the variable desktop power supply which will convert a high input voltage (12V) from the SMPS / PSU of…
Here the circuit diagram of musical bell with touch switch and timer. This circuit is designed around CMOS IC CD4011…
This is the cell phone shield circuit which can be used as mobile charger. Give protection to your cell phone…
The following diagram is a simple mobile phone battery charger circuit. The design is simple, easy to build and inexpensive.…
Here the short wave AM Transmitter circuit design diagram. The circuit is quite simple and easy to build since it…