Automatic Headlight Brightness Switch
المكونات Part , Total Qty. ,Description
R115K 1/4W Resistor
R2, R3, R435K Pot
Q11NPN Phototransistor
Q212N3906 PNP Transistor
K11Low Current 12V SPST Relay
K21High Current 12V SPDT Relay
S11SPST Switch
B11Car Battery
MISC1Case, wire, board, knobs for pots
الدائرة الثانيهSegment LED Counter7 المكوناتR1-R77470 Ohm 1/4 Watt Resistor
U1174LS90 TTL BCD Counter IC7490,74HC90 U2174LS47 TTL Seven Segment Display Driver IC7447,74HC47 DISP11Common Anode 7 Segment LED Display
MISC1Board, Sockets For ICs, Wire
الدائرة الثالثهLight/Dark Detectorالمكونات
R11100K Pot
Q1 2N3904 NPN Transist or 2N2222
Q2 NPN Phototransistor
RELAY19V Relay
MISC1Board, Wire, 9V Battery Snap (if battery used), Knob For R1
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