Article
Glow Plug Heater
for RC models
This article is intended for those readers who work on all types of models which include combustion engines, such as airplanes, cars, boats, and other vehicles, who would like to be able to adjust the heating current of the glow plug and have an indication of its physical state.
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.
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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
Resistors:
R1 = 470
R2 = 4k7
R3,R4 = 1,5
R5 = 10k
R6 = 0,05 (50 mOhm)
R7 = 1k
P1 = 10k logarithmic law potentiomeer
Capacitors:
C1,C2,C3,C6 = 100 nF
C4 = 10µF/25 V
C5 = not used
C7 = 1µF 25V
C8 = 10nF
Semiconductors:
T1 = BC547
T2 = BC557
T3 = BUZ11
T4 = BS170
IC1 = ST7FLITE05 (programmed, order code 040239-41)
IC2 = 78L05
D1 = LED, red, 3mm, ultrabright
D2,D3 = LED, orange, 3mm, ultrabright
D4-D7 = LED, green, 3 mm, ultrabright
D5 = 1N5820
Inductors:
L1 = 47µH
Miscellaneous:
S1 = pushbutton, 1 make contact
K1,K2 = 2-way PCB terminal block, lead pitch 5mm
PCB, ref. 040329-1, available from The PCBShop
R1 = 470
R2 = 4k7
R3,R4 = 1,5
R5 = 10k
R6 = 0,05 (50 mOhm)
R7 = 1k
P1 = 10k logarithmic law potentiomeer
Capacitors:
C1,C2,C3,C6 = 100 nF
C4 = 10µF/25 V
C5 = not used
C7 = 1µF 25V
C8 = 10nF
Semiconductors:
T1 = BC547
T2 = BC557
T3 = BUZ11
T4 = BS170
IC1 = ST7FLITE05 (programmed, order code 040239-41)
IC2 = 78L05
D1 = LED, red, 3mm, ultrabright
D2,D3 = LED, orange, 3mm, ultrabright
D4-D7 = LED, green, 3 mm, ultrabright
D5 = 1N5820
Inductors:
L1 = 47µH
Miscellaneous:
S1 = pushbutton, 1 make contact
K1,K2 = 2-way PCB terminal block, lead pitch 5mm
PCB, ref. 040329-1, available from The PCBShop
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