If you have high-powered LEDS, or a power supply, or are trying to control larger motors, you have to get a lot of heat out of your circuit boards. The classic way to dissipate heat is to bolt your power transistor to an aluminum heat sink. That is a slow, messy, and expensive proposition, especially if you need […]
Thermal design: Get the heat out of the electronics Read More »
View as PDF Most commercial LED flashlights use three AAA or AA batteries in series that produce 4.5V. The batteries then drive four white LEDs that connect in parallel. These LEDs can work at voltages as low as 2.7V and, in some cases, 2.4V. At those voltages, the LEDs become dim, and you must frequently
LED-flashlight circuit works at voltages as low as 0.5V Read More »
Minneapolis, MN (PRWEB) November 4, 2005 The flashlight industry has come along way since 1898 when Conrad Huberts first patent for the Eveready flashlight consisted of a hand-made paper, fiber tube, bulb and a rough brass reflectors that generated a mere flash of light. Since then, breakthroughs each decade have shed light into every corner
Batteries are History With New Flashlight Technologies Read More »
