Comments on: Amusing Self-Service Of OSRAM LED Bulb Model R18NBB https://jestineyong.com/amusing-self-service-of-osram-led-bulb-model-r18nbb/ Semiconductors, Test Equipments, Circuit Board Troubleshooting, Electronic Repair Courses and Many More! Tue, 19 Sep 2023 06:45:16 +0000 hourly 1 https://wordpress.org/?v=5.4.24 By: Parasuraman S https://jestineyong.com/amusing-self-service-of-osram-led-bulb-model-r18nbb/comment-page-1/#comment-409228 Tue, 19 Sep 2023 06:45:16 +0000 https://jestineyong.com/?p=31008#comment-409228 In reply to Henrique J. G. Ulbrich.

Many thanks for sharing your experience and expertise. It is valuable.

Likes(1)Dislikes(0)
]]> By: Henrique J. G. Ulbrich https://jestineyong.com/amusing-self-service-of-osram-led-bulb-model-r18nbb/comment-page-1/#comment-409187 Mon, 18 Sep 2023 15:26:41 +0000 https://jestineyong.com/?p=31008#comment-409187 Very good, Parasuraman. I had sometimes opportunity to fix these types of lamps. In fact, it is not complicated, except the limited space to work, mainly due to the short wires connecting the socket to the driver. It is necessary to loosen the socket (i.e., dismantle the whole lamp). When mounting again, it is advisable to replace the short wires with longer ones. Besides facilitating the remount job, it eases another eventual maintenance.

Another care could be to clean the existing old dissipating paste and replace it, but this is impossible to the majority of products, as the shaped LED strip is a closed unit (analog observation from Albert when he tells about difficulties in replacing the LEDs). No access. Sure, the quantity of dissipating paste is not enough due to the "programmed obsolescence" imposed by the manufacturer.

Likes(2)Dislikes(0)
]]> By: Parasuraman S https://jestineyong.com/amusing-self-service-of-osram-led-bulb-model-r18nbb/comment-page-1/#comment-409087 Sun, 17 Sep 2023 10:42:30 +0000 https://jestineyong.com/?p=31008#comment-409087 As you can see from the picture, it has a rectifier bridge. Voltage is slightly dropped through a resistor. Rest the IC handles itself to generate voltage enough to drive the LED. Normally 100uF/100V is what is seen as used. But I did not have 100V and so I used 160V Csap. Hope this clarifies! Many thanks!

Likes(2)Dislikes(0)
]]> By: Parasuraman S https://jestineyong.com/amusing-self-service-of-osram-led-bulb-model-r18nbb/comment-page-1/#comment-409028 Sun, 17 Sep 2023 00:05:26 +0000 https://jestineyong.com/?p=31008#comment-409028 In reply to Anwar Yunas Shiekh.

Yes, a surprise!

Likes(0)Dislikes(0)
]]> By: Parasuraman S https://jestineyong.com/amusing-self-service-of-osram-led-bulb-model-r18nbb/comment-page-1/#comment-409027 Sun, 17 Sep 2023 00:04:11 +0000 https://jestineyong.com/?p=31008#comment-409027 In reply to Anwar Yunas Shiekh.

The output voltage is less.

Likes(1)Dislikes(0)
]]> By: Parasuraman S https://jestineyong.com/amusing-self-service-of-osram-led-bulb-model-r18nbb/comment-page-1/#comment-409026 Sun, 17 Sep 2023 00:03:42 +0000 https://jestineyong.com/?p=31008#comment-409026 In reply to Yogesh Panchal.

Many thanks!

Likes(0)Dislikes(0)
]]> By: Anwar Yunas Shiekh https://jestineyong.com/amusing-self-service-of-osram-led-bulb-model-r18nbb/comment-page-1/#comment-408995 Sat, 16 Sep 2023 19:22:54 +0000 https://jestineyong.com/?p=31008#comment-408995 In reply to Albert van Bemmelen.

how did it even fit?

Likes(1)Dislikes(0)
]]> By: Imoudu.O https://jestineyong.com/amusing-self-service-of-osram-led-bulb-model-r18nbb/comment-page-1/#comment-408990 Sat, 16 Sep 2023 18:40:16 +0000 https://jestineyong.com/?p=31008#comment-408990 If the lamp uses ac voltage inlet, then I expect board to have rectifier and tank cap, is the 100uf/160V the tank cap? Oram lamps ate known to be quality products, unfortunately we can't get it in my country anymore.Thanks for sharing sir.

Likes(2)Dislikes(0)
]]> By: Parasuraman S https://jestineyong.com/amusing-self-service-of-osram-led-bulb-model-r18nbb/comment-page-1/#comment-408967 Sat, 16 Sep 2023 15:00:10 +0000 https://jestineyong.com/?p=31008#comment-408967 Thanks!

Likes(0)Dislikes(0)
]]> By: Parasuraman S https://jestineyong.com/amusing-self-service-of-osram-led-bulb-model-r18nbb/comment-page-1/#comment-408966 Sat, 16 Sep 2023 14:59:49 +0000 https://jestineyong.com/?p=31008#comment-408966 In reply to Waleed Rishmawi.

Many thanks!

Likes(0)Dislikes(0)
]]>