Article
LED’s Replace that Halogen Lamp
Economical alternative for the GU4
There are numerous LED alternatives available these days for most types of incandescent and halogen lamps. But as an electronics hobbyist you can of course design and build something like this yourself, as this article illustrates. The LED lamp presented here can replace a GU4 model 10-watt halogen lamp, uses only one-tenth of the power and is barely bigger than the original.
Materials
Gerber file
CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor GREEN and GOLD members can exclusively download these files for free as part of their membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service.
Elektor recommends the Elektor PCB Service service from its business partner Eurocircuits or AISLER as the best services for its own prototypes and volume production.
The use of our Gerber files is provided under a modified Creative Commons license. Creative Commons offers authors, scientists, educators and other creatives the freedom to handle their copyright in a more free way without losing their ownership.
PCB
Component list
COMPONENT LIST
Resistors
R1 = 0.620Ohm (SMD1206)
R2 = 1kOhm (SMD0603)
Capacitors
C1 = 2.2µF 25V (SMD3528)
C2 = 1µF 16V (SMD0603)
Inductors
L1 = 100µH (e.g. LPS5030-104MLB)
Semiconductors
D1a,b,c,d,D2 = PMEG4010CEJ (SOD323F)
D3 = SMAJ24A (SMA)
LED1 = Luxeon Rebel LED
T1 = IRLML2030TRPBF (SOT23)
U1 = MAX16820ATT+ (6 TDFN–EP)
Miscellaneous
PL1 = right angled pinheader (4 per lamp)
Lens: RS Components # 697-4288
Starry Night set: e.g. Conrad Electronics #’s 570590–89, 570591–89, 570592–89 or 570593–89
Resistors
R1 = 0.620Ohm (SMD1206)
R2 = 1kOhm (SMD0603)
Capacitors
C1 = 2.2µF 25V (SMD3528)
C2 = 1µF 16V (SMD0603)
Inductors
L1 = 100µH (e.g. LPS5030-104MLB)
Semiconductors
D1a,b,c,d,D2 = PMEG4010CEJ (SOD323F)
D3 = SMAJ24A (SMA)
LED1 = Luxeon Rebel LED
T1 = IRLML2030TRPBF (SOT23)
U1 = MAX16820ATT+ (6 TDFN–EP)
Miscellaneous
PL1 = right angled pinheader (4 per lamp)
Lens: RS Components # 697-4288
Starry Night set: e.g. Conrad Electronics #’s 570590–89, 570591–89, 570592–89 or 570593–89
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