Xenon Flasher This discussion covers 3 different Xenon flashing circuits from disposable cameras. From them, you will learn circuit tricks that have NEVER been shown in any theory book. The first circuit covers 6 BUILDING BLOCKS. You will need an old "disposable Flash Camera" plus two extra parts to carry out the modifications. The first circuit comes from a Fuji camera: You are going to like this project. THE BUILDING BLOCKS This project has 6 separate building blocks: 1. WARNING This project generates 350V DC and stores the voltage in a large electrolytic. 1. The feedback winding is connected between the 220R resistor and the base of the transistor. 2. 3. 4. 5. 6. MORE ON THE "CIRCUIT" Unfortunately this project cannot be left in a "ready" state as the circuit consumes about 250 - 300mA just to keep the electrolytic charged and a single cell will last only a few hours. DIFFERENT CIRCUITS Unfortunately not all flash units are the same.
SchematicsForFree.com VPT 7 VPT 8 by HC Gilje, released may 2018. Video Projection Tool (VPT) is a free multipurpose realtime projection software tool for Mac and Windows. VPT 7 was downloaded over 100000 times, so in spite of a lot of other options available VPT still is popular. Among other things it can be used for projecting mapping on complex forms, adapt a projection to a particular space/surface, combine recorded and live footage, for multiscreen HD playback, for interactive installations using arduino sensors or camera tracking ++. VPT is very flexible in terms of control, with presets and a built in cue list, as well as control over almost every single parameter using OSC, midi, serial communication, built in LFOs and ArtNet. It also supports syphon (mac) and spout (windows) for sharing video streams between applications. VPT 8 is recommended for mac OS 10.12 or later and Windows 7 and 10 (although VPT 7 works great on Windows 7). and yes, it is still FREE! VPT 8 has a lot of under-the-hood changes. extras:
Compact fluorescent lamp Menu Introduction Compact fluorescent lamps have some benefits in comparison with classic light bulbs. Fluorescent lamps are available usually in these color temperatures: Warm white (2700K) Cool white (4000K) Daylight (6000K) Most often we meet with "warm white", which is close to classic bulb and which is most pleasant to people. Electrical construction Princip of function we explain on a LUXAR 11W lamp. Lamp start R6, C2 and DIAC mades first pulse to base of transistor Q2 and cause his opening. Normal operation When the gas is ionisated in a pipe, C3 will be practically shorted and thanks to this frequency goes down and changer is now drived only by C6 and changer generates much lower voltage but enough to keep the light on. Failures Common failure is broken capacitor C3. it is possible mainly at cheap lamps, where are used cheaper components for lower voltage. Repair of electronics Repair of electronics usually means change of capacitor C3 if he is brobek. Mechanical construction Reviewing
Homo ludens electronicus My interest in electronics started when I was 12 years old, although I had built electric devices (lighting systems, flashlights, solenoids, even a motor) much earlier. At age 12 I started the real thing: Radios, sound effect generators, light games, etc. This obsession of building things led to a career in electronics, but also it has become my most interesting hobby. I regularly design and build things, and now I will share my better documented projects with you. Each of the following links leads to a page giving constructional information (schematics, sometimes printed circuit layouts, and text) for an electronic project. Power supply and switching technology 13.8 Volt, 20 Ampere linear power supply: A semi-traditional power supply for communication equipment, using negative-rail regulation with grounded pass transistors in a configuration that gives some unique advantages. 160 Volt, 3 Ampere DC motor power supply: A very compact, efficient and simple off-line buck regulator. Audio
LIME ART GROUP – Interactive Video Mapping ATX to Lab Bench Power Supply Conversion First, a bit of background on a typical ATX power supply: Computer power supplies are Switch Mode Power Supplies (SMPS), which use high-frequency switching circuit elements to provide a high-quality output voltage, with good energy efficiency. One side effect of this technology is the minimum load requirement that each power supply has. Also, modern power supplies do not simply have an OFF/ON switch, they have what is known as a "soft" power switch. To protect our circuit from accidental (and careless!) Update: While the diagrams show fuses on all voltage rails and no fuse on the ground line, when I actually built my power supply, I was young and foolish and only put a fuse on the ground wire.
techlib.com Electronic Circuits Also, use the search box at the bottom of the home page. Audio Circuits Audio Amplifier CircuitsDirectional MicrophoneAGC Dynamic MicrophoneVery Low Noise AmplifierInduction Receiver White and Pink (1/F) Noise SourceNoisemaking Circuits (police siren and doorbell chime) Telephone Circuits Computer Data Logging Circuits Meter Circuits Meter/Data Acquisition AmplifierCD4069 LED Bar Graph - smooth transitions between 5 LEDs.Measuring RF Voltages with a VOM Microprocessor Circuits PicAXE Ionization ChamberKeyboard WedgieAltoids Tin LowFER Transmitter Miscellaneous Oscillators Two-Transistor Atomic Frequency StandardCD4069 Atomic Frequency Standard (I know, a little overstated.)Audio OscillatorsFlip-Flop Flashers, Buzzers, Etc.Flasher Ideas (LED flasher, silent metronome, low battery indicator, high voltage generator)Tiny Crystal Oscillator High-stability gate oscillator uses two, 5-pin SOT packaged devices. Power Control Power Supplies /Regulators Radiation Circuits RF Circuits Science
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