Laser Circuits
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This page details the construction of a prototype dye laser that is intended for initial checking of some parameters — for example, I want to know whether a simple design will threshold easy dyes with minimal input energy. In principle, the answer is.... -
I bought a SF-AW210 405nm diode and was running it off my LM317 power supply. I have been running my harvested DVD 16x burner laser diode in this.... -
I am about to post a How To on testing DDL`s circuit before adding the LD, I hope it is all pretty clear and with no errors. Those .... -
Hello all, I`m new to lasers, but am intrigued by them. I went to walmart and got myself a cheap red laser pointer / LED light combo key-chain. My.... -
Hey everyone! This is my first tutorial, but I do have experience with other tutorial making! So I will be fine. As a side note, my camera is not.... -
How would you like free boost driver designs?! Though I can`t control anyone`s actions, I would appreciate it if anyone wishing to sell this circuit.... -
So, as I finally managed to find an empty projector (the one we love extracting Nichia LD`s out of) (also, thanks, Greg!), I tried to find a driver.... -
Hi! I`m going to build stcs2 based driver for 445nm. I choosed it because it has low vdrop - I`m going to power it from 2x li-ion. I found schematic.... -
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Building a DIY Alarm System: The Concept So, you want to protect your property, or maybe a room, car, or even your backyard. The concept of an alarm system is to notify the ""alarm administrator"" that there is an intruder entering the previously designated.... -
This is a circuit for laser door alarm is based on the interruption of Laser beam. A low cost Laser pointer is used as the source of light beam. When somebody breaks the laser path, the alarm will be generated for few seconds. This is the figure of the.... -
This is circuit design for a laser diode driver can be implemented using voltage-controlled current source. This simple linear laser diode driver gives cleaner drive current than a switched (PWM) drivers. This circuit is based on OPA350 IC. This is the.... -
This circuit was originally designed to detect weak flashed of laser light bounced off of a fabric video projection screen. It was used as part of a firearm training system. It generates a 100mS output pulse whenever it detects a 3ms to 5ms-laser burst,.... -
Free-space optical (FSO) communication uses light as a medium to transmit data. We did communication between two computers using laser(without help of any existing means of communication). We sent texts from one PC to other(Laser Chat Messenger) just like.... -
This page describes the conversion of a simple, inexpensive green laser pointer into a lab-grade laser. The heart of this DPSS laser is an inexpensive green laser pointer. Such pointers are actually diode-pumped solid-state (DPSS) lasers consisting of a.... -
With these, you can make your very own security system that gives intruders a sporting chance! It`s the laser-version of saying But before I kill you, Mister Bond This laser tripwire system will trigger an audio alarm (made from a 110dB piezo personal.... -
If you have ever worked with lasers, you know how fun and interesting it can be, you also know how expensive it can be. The high voltage power supplies for the laser tubes are often more expensive then the tubes themselves. This supply can be built with.... -
This circuit is built around a 555timer using very few components. Since the circuit is verysimple, even a novice can easily build itand use it as a controlling device. A laser pointer, now easily available in the market, can be used to operate this device..... -
That HID headlights + small slim line plates REDUCE the distance a police car can ambush you (lock in with laser/LIDAR) to get.... -
This system includes a processor which may have been a microcontroller but it did not have alarge memory and so an obvious improvment to this system is to use the internal RAM and ROM in a modern microcontroller. Note There are lots of circuit elements here.... -
I have developed an inexpensive control system (less than $70) that can be used to both get more cutting power out of a DC discharge laser and significantly improve cutting accuracy for home built laser systems. The control system implements a control.... -
The recent Epilog Laser Challenge at Instructables. com got me thinking about building a low cost CNC laser. The engrave r they had as the prize had a list price of about $8, 000. The income tax on that would be quite a lot. I thought a larger more powerful.... -
The transmission distance can be increased greatly by replacing the transmitter`s red LED with a cheap red laser diode purchased from a $2 Dollar Shop . The circuit design makes a compromise between laser brightness and sound quality and loudness. This is.... -
The IR photo transistor Q1 (Radio Shack 276-145A) or similar is connected to the set input (pin 6). The photo transistor should be shielded from direct light so that the voltage at the set input (pin 6) is less than 1 volt under ambient conditions and moves.... -
This is first version of laser diode power supply, and current source using n-channel power device. Component: LM358D IC, Transistor, Resistor, .... -
This circuit shows about TLV3702 Laser Pointer Sensor Circuit Diagram . Features: such as starting a robot, perfectly functional for controlling a ....
New Circuits
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This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of.... -
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is.... -
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to.... -
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This.... -
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the.... -
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,.... -
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the.... -
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power.... -
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
Popular Circuits
This jam circuit can be used in quiz contests wherein any par- ticipant who presses his button...
The device generates an adjustable frequency of low to medium powered IR pulses of invisible...
The detector circuit is made up a two-amplifier multiple feedback bandpass filter followed by an...
In this application, the ICM7249 is configured as an hours-in-use meter and shows how many whole...
I chose the Nexus 4 as these devices are traditionally very open, as you can see in case of the...
When supply voltage drops below a minimum threshold, it`s often good practice to disconnect the...
The right leg driver circuit is where many amplifier board circuits common signals are summed and...
The MT8885 is a monolithic DTMF transceiver with call progress Filter It is fabricated in CMOS...
When an electric current is passed through a wire, it creates a magnetic field around it. The...
It is important to layout your PCB correctly to allow trouble free In System Programming of AVR...
DTL internal structure shown in the inverter circuit (M5936P) is. Inputs with diodes, transistors...
FIG switching solenoid driver circuit, wherein the device chip U8 is 74123, the device is a solid...