http://www.edn.com Wed, 16 May 2012 14:33:46 MDT eng Copyright 2012 UBM Canon. Subject to its Terms of Use (http://www.edn.com/info/terms-and-conditions.php) http://www.edn.com/blog/PowerSource/41784-100W_equivalent_LED_bulbs_make_their_appearance.php?rssid=20881 http://www.edn.com/blog/PowerSource/41784-100W_equivalent_LED_bulbs_make_their_appearance.php?rssid=20881 Wed, 16 May 2012 04:22:02 GMT Philips was showing off a 100W LED replacement bulb at LightFair last week, which joins the ranks of candidates from GE and Osram Sylvania. Although Philips wasn’t talking about production... http://www.edn.com/blog/PowerSource/41770-Cree_luminaires_interface_directly_with_EcoSystem_lighting_controller.php?rssid=20881 http://www.edn.com/blog/PowerSource/41770-Cree_luminaires_interface_directly_with_EcoSystem_lighting_controller.php?rssid=20881 Tue, 08 May 2012 23:01:54 GMT While LED lighting is justifiably touted as being power miserly, it’s really how well they integrate into an intelligent lighting system that allows them a fast ROI/payback time, especially in... http://www.edn.com/blog/PowerSource/41765-VCs_place_their_bets_on_advanced_materials_in_power_electronics.php?rssid=20881 http://www.edn.com/blog/PowerSource/41765-VCs_place_their_bets_on_advanced_materials_in_power_electronics.php?rssid=20881 Mon, 07 May 2012 03:27:36 GMT EDN doesn’t usually pay that much attention to what the financial backing is behind new companies – we generally leave that to our sister publication EETimes. However, Lux Research recently... http://www.edn.com/blog/PowerSource/41754-Next_week_s_LightFair_aka_LEDFair_promises_newest_in_solid_state_lighting.php?rssid=20881 http://www.edn.com/blog/PowerSource/41754-Next_week_s_LightFair_aka_LEDFair_promises_newest_in_solid_state_lighting.php?rssid=20881 Tue, 01 May 2012 20:28:42 GMT Next week is the lighting industry’s pre-eminent trade show, LightFair, which to be as accurate as possible should change its name to LEDFair. The show fills up the massive Las Vegas Convention... http://www.edn.com/blog/PowerSource/41749-Power_modules_vs_discretes_White_paper_quantifies_design_cycle_times.php?rssid=20881 http://www.edn.com/blog/PowerSource/41749-Power_modules_vs_discretes_White_paper_quantifies_design_cycle_times.php?rssid=20881 Fri, 27 Apr 2012 20:08:17 GMT In recent history the march of power design technology has been towards the use of web-based simulation to ease the design chores of putting together power conversion circuits with discrete... http://www.edn.com/blog/PowerSource/41737-Intersil_s_LCoS_pico_projector_system_shrinks_size_while_cutting_costs.php?rssid=20881 http://www.edn.com/blog/PowerSource/41737-Intersil_s_LCoS_pico_projector_system_shrinks_size_while_cutting_costs.php?rssid=20881 Tue, 24 Apr 2012 15:01:09 GMT Microdisplays, including pico projectors, could be the New Big Thing in consumer electronics. A couple of examples of possible incarnations for tiny LED-based handheld projectors... http://www.edn.com/blog/PowerSource/41729-Ambient_light_sensor_mimics_human_eye_in_both_spectral_response_sensitivity.php?rssid=20881 http://www.edn.com/blog/PowerSource/41729-Ambient_light_sensor_mimics_human_eye_in_both_spectral_response_sensitivity.php?rssid=20881 Thu, 19 Apr 2012 21:14:52 GMT Intelligent lighting systems rely on sensors to adjust a room’s light based on factors such as room occupancy and available natural light. The advantages of intelligent lighting can go well... http://www.edn.com/blog/PowerSource/41728-LED_array_holders_bring_solderless_assembly_to_solid_state_lights.php?rssid=20881 http://www.edn.com/blog/PowerSource/41728-LED_array_holders_bring_solderless_assembly_to_solid_state_lights.php?rssid=20881 Wed, 18 Apr 2012 21:42:38 GMT LED arrays are gaining traction in the lighting world, where their ability to cram many LED emitters into a single small package makes them attractive for high-intensity lighting. Also referred to... http://www.edn.com/blog/PowerSource/41727-Why_MR_16_lights_are_an_attractive_LED_lighting_product.php?rssid=20881 http://www.edn.com/blog/PowerSource/41727-Why_MR_16_lights_are_an_attractive_LED_lighting_product.php?rssid=20881 Tue, 17 Apr 2012 21:28:52 GMT Lighting Science Group (LSG), the largest producer of LED bulbs in North America, has broadened its product line to include the MR-16 light.(It measures about 2-in long in real life.)LSG’s... http://www.edn.com/blog/PowerSource/41720-Udacity_biz_model_School_is_accountable_for_students_value_to_employers.php?rssid=20881 http://www.edn.com/blog/PowerSource/41720-Udacity_biz_model_School_is_accountable_for_students_value_to_employers.php?rssid=20881 Thu, 12 Apr 2012 22:39:51 GMT The online course on Robocars presented by robocar savant Sebastian Thrun and free to all just wrapped up, and the grading robots are busy tallying up the final grades. Many students were so... http://www.edn.com/blog/PowerSource/41719-Cree_claims_R_D_record_for_white_LED_254_lm_Watt.php?rssid=20881 http://www.edn.com/blog/PowerSource/41719-Cree_claims_R_D_record_for_white_LED_254_lm_Watt.php?rssid=20881 Thu, 12 Apr 2012 15:53:02 GMT Cree says that the R&D version of the white LED’s efficacy was measured at 254 lumens per watt, at a correlated color temperature of 4408 K at standard room temperature, 350 mA. In the past Cree... http://www.edn.com/blog/PowerSource/41716-Use_Open_Source_Hardware_Participate_in_the_survey_by_April_15th.php?rssid=20881 http://www.edn.com/blog/PowerSource/41716-Use_Open_Source_Hardware_Participate_in_the_survey_by_April_15th.php?rssid=20881 Mon, 09 Apr 2012 17:55:48 GMT Many EDN readers use and design Open Source Hardware (OSH) projects. (OSH is “hardware whose design is made publicly available so that anyone can study, modify, distribute, make, and sell the... http://www.edn.com/blog/PowerSource/41715-Cirrus_tackles_dimmer_compatibility_challenges_with_digital_LED_controller.php?rssid=20881 http://www.edn.com/blog/PowerSource/41715-Cirrus_tackles_dimmer_compatibility_challenges_with_digital_LED_controller.php?rssid=20881 Mon, 09 Apr 2012 15:53:03 GMT Cirrus Logic’s initial entry into the LED lighting market indicates that the company believes the key to success in this highly-competitive sector lies in achieving near-100% compatibility with... http://www.edn.com/blog/PowerSource/41713-Lumileds_mid_power_5630_LED_aims_at_office_lighting.php?rssid=20881 http://www.edn.com/blog/PowerSource/41713-Lumileds_mid_power_5630_LED_aims_at_office_lighting.php?rssid=20881 Fri, 06 Apr 2012 16:49:23 GMT The Lumileds 5630 is Philips Lumileds’ first white, mid-power LED, targeting the office lighting space (troffers and tube lights) and other distributed LED lighting applications. A mid-power LED... http://www.edn.com/blog/PowerSource/41706-Another_advantage_of_LED_lights_They_don_t_attract_bugs_and_here_s_why.php?rssid=20881 http://www.edn.com/blog/PowerSource/41706-Another_advantage_of_LED_lights_They_don_t_attract_bugs_and_here_s_why.php?rssid=20881 Mon, 02 Apr 2012 16:45:22 GMT Gary Trott, a product development innovator for Cree LED Lighting, noticed that the LR6 down lights installed at the entrance to Cree four years ago had no bugs in them. This is a remarkable... http://www.edn.com/blog/PowerSource/41702-Wi_Fi_with_LEDs_Bluetooth_for_iPhones_and_wireless_charging_all_in_one_random_walk.php?rssid=20881 http://www.edn.com/blog/PowerSource/41702-Wi_Fi_with_LEDs_Bluetooth_for_iPhones_and_wireless_charging_all_in_one_random_walk.php?rssid=20881 Fri, 30 Mar 2012 15:59:42 GMT During their presentation at Tuesday’s LED event at DESIGN West, Elecia White and Rob Mitchell talked about incorporating WiFi into their hacked and arduino-controlled GE LED light string.... http://www.edn.com/blog/PowerSource/41693-Could_4G_phones_drive_wireless_charging_acceptance_in_autos_.php?rssid=20881 http://www.edn.com/blog/PowerSource/41693-Could_4G_phones_drive_wireless_charging_acceptance_in_autos_.php?rssid=20881 Mon, 26 Mar 2012 16:08:30 GMT A survey of 4G smartphone owners indicated that poor battery performance is dragging down the phones in customer satisfaction. It’s not that batteries are more poorly designed compared to... http://www.edn.com/blog/PowerSource/41689-TI_offers_bare_die_in_quantities_as_low_as_10_pieces.php?rssid=20881 http://www.edn.com/blog/PowerSource/41689-TI_offers_bare_die_in_quantities_as_low_as_10_pieces.php?rssid=20881 Wed, 21 Mar 2012 22:39:16 GMT While Texas Instruments has been selling bare die for a while, you had to buy them in large quantities, which is a problem if you just need a few for prototypes or simply have a low-volume... http://www.edn.com/blog/PowerSource/41686-Authenticated_power_outlets_say_Show_Me_the_Money.php?rssid=20881 http://www.edn.com/blog/PowerSource/41686-Authenticated_power_outlets_say_Show_Me_the_Money.php?rssid=20881 Mon, 19 Mar 2012 16:51:50 GMT I like pre-WWI English fiction. Often the hero/heroine lives in a London flat that seems from the viewpoint of almost a century later to be more like camping than urban living. For example, you... http://www.edn.com/blog/PowerSource/41685-Leeper_tears_down_Philips_L_Prize_LED_bulb.php?rssid=20881 http://www.edn.com/blog/PowerSource/41685-Leeper_tears_down_Philips_L_Prize_LED_bulb.php?rssid=20881 Mon, 19 Mar 2012 15:24:51 GMT Doug Leeper got his hands on a Philips L-Prize bulb and promptly tore it down.The L-Prize bulb (10W, 940lm) is quite a bit different from the first of their secondary phosphor bulbs (12.5W,... http://www.edn.com/blog/PowerSource/41682-Universal_GNSS_front_end_amp_IC_shrinks_shark_fin_antenna_size.php?rssid=20881 http://www.edn.com/blog/PowerSource/41682-Universal_GNSS_front_end_amp_IC_shrinks_shark_fin_antenna_size.php?rssid=20881 Thu, 15 Mar 2012 16:26:09 GMT For being so big, cars are cramped for space for their electronics. Steering wheels, rearview mirrors, center consoles – their real estate is at a premium. One area that’s ripe for... http://www.edn.com/blog/PowerSource/41679-The_smart_grid_isn_t_getting_smart_enough_fast_enough_says_MIT_report.php?rssid=20881 http://www.edn.com/blog/PowerSource/41679-The_smart_grid_isn_t_getting_smart_enough_fast_enough_says_MIT_report.php?rssid=20881 Mon, 12 Mar 2012 16:04:08 GMT As the US power grid attempts to accommodate less predictable solar- and wind-based energy sources, the nimbleness of the grid becomes key to balancing fuel-burning power sources with renewable.... http://www.edn.com/blog/PowerSource/41673-Q_A_on_auto_safety_and_touchscreens_with_JD_Power.php?rssid=20881 http://www.edn.com/blog/PowerSource/41673-Q_A_on_auto_safety_and_touchscreens_with_JD_Power.php?rssid=20881 Thu, 08 Mar 2012 22:20:58 GMT Touchscreens already dominate thehigh-end smartphone and tablet markets and are starting to make their way into the automobile cabin. Comments on this recent article on some new touchscreen... http://www.edn.com/blog/PowerSource/41661-In_browser_circuit_simulator_tackles_circuits_from_simple_to_complex.php?rssid=20881 http://www.edn.com/blog/PowerSource/41661-In_browser_circuit_simulator_tackles_circuits_from_simple_to_complex.php?rssid=20881 Mon, 05 Mar 2012 20:05:10 GMT Analog and mixed-signal simulations should be part of every circuit designer’s toolkit (if only to be able to say what you dislike or distrust about them.) CircuitLab is a brand-new startup from... http://www.edn.com/blog/PowerSource/41645-Atmel_and_Cypress_target_single_layer_touch_screens_with_new_controllers_ITO_sensor.php?rssid=20881 http://www.edn.com/blog/PowerSource/41645-Atmel_and_Cypress_target_single_layer_touch_screens_with_new_controllers_ITO_sensor.php?rssid=20881 Tue, 28 Feb 2012 18:50:43 GMT Smart phones and tablets, with their infinitely customizable multi-touch screens, have trained consumers to expect the same degree of versatility in all devices, from cars to refrigerators to... http://www.edn.com/blog/PowerSource/41638-Capacitor_selection_helps_achieve_long_lifetimes_for_LED_lights.php?rssid=20881 http://www.edn.com/blog/PowerSource/41638-Capacitor_selection_helps_achieve_long_lifetimes_for_LED_lights.php?rssid=20881 Thu, 23 Feb 2012 00:31:36 GMT This presentation was originally given by Andrew Smith, product manager, LED Lighting at Power Integrations for EDN’s May 2011 live LED event in San Jose. The next free LED event will be part of... http://www.edn.com/blog/PowerSource/41637-Learn_all_the_basic_algorithms_to_program_your_own_self_driving_car_in_7_weeks.php?rssid=20881 http://www.edn.com/blog/PowerSource/41637-Learn_all_the_basic_algorithms_to_program_your_own_self_driving_car_in_7_weeks.php?rssid=20881 Wed, 22 Feb 2012 18:59:27 GMT Last month Sebastian Thrun, Stanford professor and Google fellow, and develop of Google’s self-driving car, announced he was leaving Stanford teaching (he will remain as a research fellow) to... http://www.edn.com/blog/PowerSource/41629-Trading_off_lifetime_vs_cost_in_LED_light_capacitor_selection.php?rssid=20881 http://www.edn.com/blog/PowerSource/41629-Trading_off_lifetime_vs_cost_in_LED_light_capacitor_selection.php?rssid=20881 Thu, 16 Feb 2012 01:33:31 GMT There were a couple of comments in the Samsung LED light teardown that I wanted to highlight in a separate blog post so that they didn’t get lost in the comments thread. The first was alluded to...