infrared motion detector schema diagram

The circuit consists of a buck rectifier and voltage regulator, a gas sensor, a comparator circuit, and an alarm sound circuit. The buck regulator circuit includes a transformer, a bridge rectifier, and components such as QL, IC3 (7812), and...

It is unusual that personal computers are not equipped with a standard remote control interface. Many motherboards feature an IRDA port; however, this port is not compatible with the 38 kHz frequencies commonly used by regular remote controls. Fortunately,...

This smoke detector electronic project is designed using the LM1801 and common electronic components. The smoke detector circuit diagram does not utilize ionization detection, gas sensors, or optocouplers; instead, it employs two photoresistors (LDRs) and an LED. The circuit...

The digital lock shown below uses 4 common logic ICs to allow controlling a relay by entering a 4 digit number on a keypad. The first 4 outputs from the CD4017 decade counter (pins 3,2,4,7) are gated together with...

A CMOS clock circuit is capable of driving a multi-digit gas discharge display. This simple circuit does not include an alarm feature but allows for a flashing colon to indicate morning and afternoon. The circuit requires seven drive circuits...

The circuit employs 50 BUZ23 field effect transistors (FETs) arranged in parallel, with a tube blocking voltage of 100V. The control power required is minimal, eliminating the risks associated with second breakdown and the positive temperature coefficient phenomenon in...