1.5v Touch Activated Switch - A single 1.5v silver oxide button cell powers
this complete touch activated switch circuit for 5 years. It features both a
normally open and a normally closed set of solid state switch thermals. It also
has an adjustable sensitivity, which can be set for a touch capacitance change
as small as 1 picofarad.
12v Touch Switch Exciter Circuit - This circuit is designed to generate a
20KHz pseudo sine wave signal that can power about 50 remote touch activated
switch circuits. It can support a cable length of about 2500 feet. A typical
remote switch circuit is also shown as well as a receiver circuit for those
switches. (designed by David A. Johnson)
15 Volt Strobe Circuit - this circuit uses12V DC instead od mains AC. This
is very good idea if you don't want to mess with direct mains voltage connected
circuit or you want to run Strobe from batteries.
3 Xenon flashing circuits found in flash for disposable cameras - You are
going to like this project. It costs less than $3.00, contains six BUILDING
BLOCKS, re-cycles a disposable flash camera and you are going to learn a lot
Everyone has seen a disposable flash camera.
3v Capacitance Proximity Switch - This circuit was designed to provide a
touch activated switch function without an external power supply. It draws so
little power that a single 3v battery will operate the circuit for many years.
It is discussed in more detail in the section on Capacitance Proximity Switch
5 Volt Momentary Operation Touch Switch - This simple circuit uses a single
IC to form a nice touch switch circuit. A single transistor forms the remote
active switch sensor. Multiple switches can be wired in parallel. The switch
circuit can be located about 500 feet from the control circuit.
5v Capacitance Touch Activated Momentary Switch - This circuit is discussed
in more detail in the section on Capacitance Proximity Switch Technology. The
circuit is powered from a standard +5v supply. It has both a source and sink
output that change state whenever a metal button connected to the circuit is
touched. An earth ground reference is required.
741 Based Light Sensor - CdS photocell used for light/dark controlled relay
9v Powered Xenon Photoflash Controller - This 9v battery powered circuit is
designed for remote control flash needs. A charge control circuit turns off the
high voltage generator when the photoflash capacitor is fully charged. A neon
lamp is included to indicate when the system is ready to flash.
Adjustable Strobe Light - This Adjustable Strobe Light is the bigger brother
of the plain old strobe light. This one uses a much more powerful "horse shoe"
Xenon tube which produces more light. You can also control the flash rate up to
about 20Hz. Do not look directly at the flash tube when this thing is on!…
Air Transparency Monitor, Xenon Flash Transmitter - This is the matching
transmitter for the above receiver. The transmitter launches powerful 1000-watt
light pulses that last about 20 microseconds.
AN 30 LX1995 LED Driver: Camera Flash Application - Application Note
Beat Tracking Strobe - project description using AT90S8515 microcontroller
and some electronics
Easy Xenon DC-to-DC Converters!
Emergency Strobe Flasher Generates 250V - 08/05/99 EDN-Design
Ideas:.....(design idea) Figure 1 shows a complete circuit for an
emergency lamp that operates from a 12V automotive battery. The xenon flash tube
requires a 250V-dc anode voltage and a 4-kV trigger pulse. To generate the 250V
dc, IC1, a switching regulator controller, and T1, a standard Versa-PAC
transformer, operate in the....
Flash Slave Trigger (Aaron Cake) - Flash slaves are used when you need to
supplement1-flash unit with1-or several more. This slave trigger simply triggers
those other units. It does this by "seeing" the first flash (using a
phototransistor) and triggering the other flashes a few microseconds later. The
sensitivity of the circuit is adjustable to compensate for ambient light or
dimmer than usual master flashes.
Hacking the Kodak Max Single Flash Camera into a Self Repeating Strobe -
this approach is recommended mainly for homebrewing a strobe that is powered by
a single1.5 volt battery. If you can use a higher supply voltage, there are
better ways to do this.
High Power Touch Switch Exciter Circuit - If you have hundreds of touch
switches that need an excitation signal, then this circuit is what you need.
Its 20KHz 20v peak to peak output signal can supply up to 3 watts of touch
switch excitation power. ….(designed by David A. Johnson)
Light Sensor-741 Based - CdS photocell used for light/dark controlled relay
(Tony van Roon's electronic design)
Line Powered Xenon Flash Transmitter - This line-powered xenon flash circuit
drives a small camera type flash tube. It has an optical isolator to allow the
flash to be safely triggered from some remote device. A flash rate of 2Hz is
possible with the circuit. ….(designed by David A. Johnson)
Luxeon for Camera Phone Flash PDA & DSC Applications - This reference design
outlines the key considerations in the construction of a solid state, high
performance flash solution utilizing Luxeon LED technology. This design
integrates Lumileds’ high power Luxeon Emitters product with a cost effective
lens solution to provide the necessary light output.
LX1995 LED Driver: Camera Flash Application AN-30 - Application Note 30 from
Mini Pocket Strobe Circuit - works from two1.5-Volt AA batteries, based on
modified camera flash unit
Mini Strobe Light using LED - adjustable for flash rates between40 Hz and166
Hz, based on555 Timer