This is the electronic circuit diagram of metronome sound generator. The circuit featured adjustable volume and beats/minute with potentiometers. LED used to be a beat indication. The circuit powered with 9V DC voltage, a 9V battery can be used to operate this metronome circuit. This circuit designed by Velleman.
This is the circuit diagram of Clap On / Off Switch. The circuit allows you to operate your lighting or any circuit device which use 24V / 3A maximum supply, simply by clapping your hands.?It has a relay output that can be used to turn external devices on/off.? This circuit is good and ideal for… Read More »
This is the traffic baton circuit which available in two versions that are traffic baton with LED flasher and traffic baton with bulb flasher. Both the circuits powered with a 6V, 4.5Ah rechargeable battery, which is clipped to the operator”s waistband. This circuit which come from EFY mag, will help the police or someone to… Read More »
This is the circuit diagram of electronic dice which built based microcontroller chip of Atmel AT89C2051. The application of this electronic dice is similar to the one used in a game of dice. The circuit generates the random numbers which not displayed numerically, but represented by the number of glowing LEDs. The LEDs are the… Read More »
This ding-dong door bell circuit might become the simplest and cost-effective door bell circuit. The circuit is designed based on single IC 8021-2 which manufactured Formox Semiconductors. It is an 8-pin DIP (Dual Inline Package) IC whose only four pins, as shown in the above circuit design, have been used.
This easy to built circuit produces a warning beep when somebody crosses a secure area in your home or place of work. The transfer, hidden beneath the ground mat, causes the alarm whilst the individual walks over it. The circuit makes use of a behaviorive foam because the switch. it may be? small items of… Read More »
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