Showing posts with label lighting. Show all posts
Showing posts with label lighting. Show all posts
Sunday, June 2, 2013
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Friday, April 26, 2013
LED Workbench Lighting
Here is a very useful workbench lights unit for electronics hobbyists. The transportable inspection lamp circuit consists of an on-board voltage regulator and a high-bright 5mm white LED. Any 9 to 18 volt dc rated ac mains adaptor, in a position to supply about a hundred mA of output present may additionally be used to energy this moveable inspection lamp.
After building the led workbench mild circuit will have to be enclosed in a suitable plastic bottle cap as illustrated here. The miniature lens proven is an not obligatory component. In the prototype, plastic made lens lifted from a discarded torch was used!
After building the led workbench mild circuit will have to be enclosed in a suitable plastic bottle cap as illustrated here. The miniature lens proven is an not obligatory component. In the prototype, plastic made lens lifted from a discarded torch was used!
LED workbench lighting fixtures lamp circuit schematic
The adjustable 3-pin voltage regulator IC1 (LM317L) in TO-92 pack, is here tuned to produce an output of close to four.5 volt dc. This provide is straight away fed to the white LED (D2) during the present limiter resistor R3 (51 Ohm). Diode D1 (1N4001) works as an enter polarity safety guard and two small electrolytic capacitors (C1 and C2) related at the input and output pins of IC1 give a lift tos the overall steadiness of the regulator circuit. Use a regular RCA or EP socket because the enter terminal J1.
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