Circuit provides laser diode control: 09/19/2002 EDN - Design Ideas / Laser diodes are sensitive to ESD, rapid turn-on currents, and over voltage conditions. To address those problems, the simple laser-diode controller in Figure 1 has several functions. The first part of the circuit comprises an 8.2V zener diode, D1 that forms the heart of a constant-voltage source for the laser diode..

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HeNe Laser Power Supply:

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Home Built Nitrogen Laser:

Laser Barrier System Uses Tone Detection : 10/14/02 Electronic Design - Ideas for Design / In a laser barrier system, the receiver circuit generally uses signal amplitude for detection purposes. This configuration yields a complex circuit with a number of components, including an amplifier, a filter, and a threshold detector. But you can...

Laser Bug Circuit:

Laser Communication System: This is a simple Laser communication system. It can transmit and receive signal from any audio device.Communication distance is few meters. All components are not critical. Transistor 2N2222 may be on the coolrib. Laser diode is from laser pointer

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Laser Diode Driver Stabilizes Sensitivity Parameters: 11/05/98 EDN-Design Ideas

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