Night light with brightness control
I present a practical circuit to illuminate hallways or rooms overnight.Warning: This circuit is directly connected to the line. It is highly recomended to be careful when dealing with it.The author is not responsable for damages caused by its missuse.it is mandatory to use a potentiometer with plastic shaft and a plastic enclosure.Parts list
I present a practical circuit to illuminate hallways or rooms overnight.
Warning: This circuit is directly connected to the line. It is highly recomended to be careful when dealing with it.
The author is not responsable for damages caused by its missuse.
it is mandatory to use a potentiometer with plastic shaft and a plastic enclosure.
Parts list
Designator Part Type Part Type Description
Line voltage 230VAC 117VAC
C1 0.22uF 400V 0.47uF 250V Polyester Capacitor
C2 47UF 25V 47UF 25V Electrolitic Capacitor
D1 1N4007 1N4007 Rectifier 1000V 1A
D2 1N4007 1N4007 Rectifier 1000V 1A
D3 1N4007 1N4007 Rectifier 1000V 1A
D4 1N4007 1N4007 Rectifier 1000V 1A
D5 1N4747A 1N4747A Zener Diode 20V 1W
D6 1N4148 1N4148 Signal Diode
D7 Lite On 2R3D7 Lite On 2R3D7 light Emitting Diode
LDR1 10Meg 10Meg Photoresistor
Q1 2N3906 2N3906 PNP BJT
Q2 2N3906 2N3906 PNP BJT
Q3 2N3904 2N3904 NPN BJT
R1 1MEG 1MEG Resistor 1/4W
R2 2.2 Ohms 2.2 Ohms Resistor 1W
R3 10k 10k Potentiometer ALPS RK09K1130A8G
R4 150K 150K Resistor 1/4W
R5 1Meg 1Meg Resistor 1/4W
R6 470k 470k Resistor 1/4W
R7 100K 100K Resistor 1/4W
R8 100 100 Ohms Resistor 1/4W
S1 SLIDE SWITCH EG 1206A E-SWITCH
March 29 2015
I upload some photos of the finish unit using as enclosure one discarded cell phone power supply.
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