- Vision Systems. McComb, Gordon // Popular Electronics;Aug99, Vol. 16 Issue 8, p74
Provides information on robotic vision systems. Function of a photocell, referred to as light-dependent resistor, in robotic vision; Other methods that can used for a robotic-vision system; Alternatives for light-sensitive vision systems.
- photocell. // Computer Desktop Encyclopedia;10/1/2011, p1
A light sensor (photodetector) that varies its resistance between its two terminals based on the amount of photons (light) it receives. Used for photographic light meters, automatic on-at-dusk street lights and other light-sensitive applications, it is also called a "light dependent resistor"...
- Driver thermally compensates LED. Wolczko; Travis, Andrzej // EDN Europe;Sep99, Vol. 44 Issue 9, p96
Describes a positive-temperature-coefficient resistor that address the temperature-dependent problems posed by light emitting diodes. Linear temperature coefficient of the device; Tenfold decrease in thermal coefficient provided by the device; Bandwidth of the circuit designed.
- Load resistors solve lighting problems. // DEMM: Engineering & Manufacturing;Nov2012, p43
The article offers information on Narva's load resistors for lighting problems.
- Embedded Resistor Design Guidelines. Snogren, Richard C.; Jouppi, Mike // Printed Circuit Design & Manufacture;Dec2004, Vol. 21 Issue 12, p18
Discusses the developments in test vehicle and thermal guidelines for embedded resistor design. Importance of thermal management of resistors and the developments of test vehicles to quantify some logical resistor behaviors; Comparison between the ways to develop design guidelines for embedded...
- Slow light and slow current. Zapasskii, V. S.; Kozlov, G. G. // Optics & Spectroscopy;Jan2008, Vol. 104 Issue 1, p95
It is shown that the effect of hole-burning under conditions of coherent population oscillations as well as the light pulse delay in a saturable absorber (a modification of the so-called slow light effect) can be interpreted, in a comprehensive way, in terms of the intensity spectrum of the...
- Untitled. // Electronics Weekly;4/11/2012, Issue 2503, p24
The author reports on the methods of powering a grounded light emitting diode (LED) from a grounded supercapacitor including using a resistor or implementing a buck/boost converter. It states use of a resistor will mean brightness is dependent on capacitor voltage and implementing a buck/boost...
- Switch circuit controls lights. Castro-Miguens, C.; Castro-Miguens, J. B. // EDN;4/7/2011, Vol. 56 Issue 7, p48
The article presents a switch circuit that uses a triode alternating current (TRIAC). It cites the use of a charge pump to feed the circuit from the ac line since the circuit requires little power and uses few low-cost components. It points out that the circuit can be used with incandescent...
- Simple night-light uses a photoresistor to detect dusk. Chau Tran // EDN;12/15/2011, Vol. 56 Issue 24, p49
The article discusses a design idea for a night-light that uses a control circuit to distinguish light levels between direct sunlight and total darkness. It explains the principle of control circuit or light-dependent resistors (LDR) in automated streetlights and security lights. The article...
- THE $9.98 BRAKE LIGHT. // Dirt Bike;Jul2000, Vol. 30 Issue 7, p79
Presents step by step instructions on how to convert race motorcycle tail lights into break lights. Cutting of a wire of the tail light; Connection of wires with the use of a resistor; Bypassing of the resistor with leads to a pull-switch.