Dialing Code vs LED Resistor Calculator Plus

Dialing Code is the list of international dialing codes of 250 countries worldwide. If you're traveling, you are in another country or just have received a call with a prefix unknown and do not know the international prefix of a country, then this App can help you; showing you with simplicity the prefix and the map of the country. The list is very long, there are too many countries in the world, but to anyone of us is interested in a few countries; then we have created a list of Favorites so you always have to hand the countries that interest us. And if we want to share the information of a country there is no problem, this app will help you. Ever more difficult to find in an international code, no more in search for internet sites confusing and unreliable, not any longer need, the entire international database is now in your hands. [ FEATURES ] • Prefixes of 250 countries • Quickly search for a prefix by country name or prefix number • Advanced information on the country with map included • List of Personal Favorites • Share your information about the country • Retina graphics • Easy to use [ COMPATIBILITY REQUIREMENTS ] • Device: all iPhone, iPad and iPod. • iOS: 11.0 and later. [ SUPPORTED LANGUAGES ] • English, Spanish, French, German, Italian, Portuguese, Dutch, Russian. [ CONTACT US ] For help, suggestions, or feature requests, contact and visit the official website: www.lionsapp.com

LED resistance calculator use to determine the series resistor needed to connect various series combinations of light emitting diodes or "LEDs". LED resistance calculator will assist you pick the resistors make the connections for any number of LEDs. Every (LED) light emitting diode has a current that they can handle safely. Going beyond it maximum current will damage the LED. So limiting the current through the LED with the use of a series resistor is a common practice. LED resistance calculator will help you determine the value of the resistor so you can add in series with the LED to limit the current. Just input the indicated values and the result will be calculate automatically. The result include Resistor Value, Resistor Power Dissipation and Recommended Resistor Wattage. Formula: R = (Vs - Vf * Nled) / If Where: Vs - Supply Voltage Vf - LED voltage drop. The voltage drop on a LED depends on the color it emits. If- LED current. The usual operating range of common 3 mm and 5 mm LEDs is 10-30 milliamps. Nled - Number of LEDs in series A light-emitting diode (LED) is a two-lead semiconductor light source. It is a p–n junction diode that emits light when activated. When a suitable current is applied to the leads, electrons are able to recombine with electron holes within the device, releasing energy in the form of photons. This effect is called electroluminescence, and the color of the light (corresponding to the energy of the photon) is determined by the energy band gap of the semiconductor. LEDs are typically small (less than 1 mm2) and integrated optical components may be used to shape the radiation pattern. Appearing as practical electronic components in 1962, the earliest LEDs emitted low-intensity infrared light. Infrared LEDs are still frequently used as transmitting elements in remote-control circuits, such as those in remote controls for a wide variety of consumer electronics. The first visible-light LEDs were of low intensity and limited to red. Modern LEDs are available across the visible, ultraviolet, and infrared wavelengths, with very high brightness. * This method is not recommended for high current LEDs, which need a more reliable switching current regulator. Thanks for your support and do visit nitrio.com for more apps for your iOS devices.