Laser Barrier Detector circuit

Complete Ar/Kr Ion Laser Power Supply Schematics

The circuit is divided into two sections: the isolated external loop connected to the remote interface connector on the front of the power supply unit (PSU) and the non-isolated inner loop connected to the high-tension (AC line) supply. The two...

laser trip wire alarm system

Building a DIY Alarm System: The Concept. An alarm system serves to protect property, whether it be a room, vehicle, or outdoor area. The primary function of the alarm system is to alert the designated administrator of any intrusion within...

Home-Built Carbon Dioxide (CO2) Laser

The carbon dioxide (CO2) laser serves as a critical tool in high-tech industrial applications such as cutting and welding various materials, including metals. Smaller CO2 lasers are utilized for marking metals, wood, and composites, as well as in medical and...

Single Alarm Circuit

This is a single alarm circuit. The circuit includes automatic exit and entry delays, a timed bell cut-off, and a system reset. It has provisions for normally open and normally closed inputs. The single alarm circuit is designed to provide security...

laser trip wire circuit

A replication of the Afrotechmods laser tripwire circuit utilizing a simple laser pointer, an IRF244 MOSFET (most NPN transistors would also suffice), a few resistors, and one light-dependent resistor (LDR). The Afrotechmods laser tripwire circuit is an innovative application of basic...

Laser Target Finder circuit

Thanks to the S6986, the circuit is very simple and requires few components. D2, D3, D5 and D6 forms a bridge rectifier allowing to plug the sensor connector brick in any direction. C1 filters power supply, it must be connected...

Two HiJack Alarms

The first circuit was designed for the situation where a hijacker forces the driver from the vehicle. If a door is opened while the ignition is switched on - the circuit will trip. After a few minutes delay - when...

Alarm interface circuit

Alarm interface circuitry featuring a two-color light-emitting diode (LED) display. When LAi is at a high level and LBi is low, the green LED lights up; conversely, if LAi is low and LBi is high, the red LED lights up....

Laser Beam Alarm

This Alarm can be used to protect your property, Inside or Outside. And it can protect a Very Large area such as the complete perimeter of your yard. Be Aware: There are some Possible Drawbacks: Snow or Fog could Block...