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LED and Light Circuit

Index 69

Parallel LED Digitron Dynamic Scan Display Circuit

Published:2011/4/20 20:39:00 Author:Sue | Keyword: Parallel LED, Digitron, Dynamic Scan

Parallel LED Digitron Dynamic Scan Display Circuit
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Parallel LED Digitron Quiescent Display Circuit

Published:2011/4/20 20:38:00 Author:Sue | Keyword: Parallel, LED Digitron, Quiescent

Parallel LED Digitron Quiescent Display Circuit
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Serial LED Digitron Dynamic Scan Display Circuit

Published:2011/4/20 20:38:00 Author:Sue | Keyword: Serial, LED Digitron, Dynamic Scan

Serial LED Digitron Dynamic Scan Display Circuit
As seen in (View)

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20W fluorescent light electron ballast using MJE13005×2

Published:2011/4/20 6:32:00 Author:May | Keyword: 20W, fluorescent light, electron ballast

20W fluorescent light electron ballast using MJE13005×2
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Touch music color lamp circuit(BH-SK-I)

Published:2011/4/19 22:39:00 Author:Nicole | Keyword: music color lamp

Touch music color lamp circuit(BH-SK-I)
The circuit is as shown. It is composed of touch switch, SCR trigger circuit, music phonation circuit and AC depressurization rectifier circuit. BH-SK—I(IC1) is a sound control IC, it uses internal bistable state trigger as switch, to control the color lamp on or off. When the sheetmetal M is touched, the body inductive clutter singals are added to input terminal I foot of IC1 amplifier, after the singals are enlarged and shaped, selected frequency, triggered bistable state trigger by IC1, its 12 foot will output about 5V high level. This high level jumping singal outputs two roads: one is added to VT1, then VT1, VS turn on, to light up the color lamp series H1～Hn; the other is added to the trigger terminal TG of IC2 by R4, to make the trigger phonate. (View)

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Chargeable flashlight circuit 1

Published:2011/4/18 0:55:00 Author:May | Keyword: Chargeable, flashlight

Chargeable flashlight circuit 1
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LS7232 touch stepless dimming light circuit

Published:2011/4/18 8:34:00 Author:Nicole | Keyword: stepless dimming light

LS7232 touch stepless dimming light circuit
The figure is as shown, it is a touch stepless dimming table light circuit adopts LS7232 integrated circuit, LS7232 is a touch dimming special IC produced by US LSI Company, S567 and 5G7232 have the same functions with it, they can be exchanged to use directly. (View)

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Using LED as fuse indicator

Published:2011/4/18 7:34:00 Author:Nicole | Keyword: LED, fuse indicator

Using LED as fuse indicator
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Low power HID light(metal halide lamp) with IR2151、53、55

Published:2011/4/18 7:28:00 Author:Nicole | Keyword: metal halide lamp, HID light

Low power HID light(metal halide lamp) with IR2151、53、55
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Relative humidity LED display and large humidity called circuit

Published:2011/4/18 2:00:00 Author:Nicole | Keyword: relative humidity, LED display

Relative humidity LED display and large humidity called circuit
The circuit is as shown. It consists of humidity sensor, LED point display circuit, language sounder circuit, audio power amplifier circuit and so on. It is used in greenhouse, special raising, seedling and other cultivation occasion, it has the function of LED display intuitively, and it will call when it goes beyond the preset humidity. (View)

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The five-storey light switch controlling method circuit diagram

Published:2011/4/7 3:20:00 Author:Ecco | Keyword: five-story light , switch controlling method

The five-storey light switch controlling method circuit diagram
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Connection circuit diagram of four-wire ballast in fluorescent

Published:2011/4/7 3:17:00 Author:Ecco | Keyword: Four-wire , fluorescent, ballast connection

Connection circuit diagram of four-wire ballast in fluorescent
Four-wire ballast connection of fluorescent There are four lead wires in four-wire ballast, including main and auxiliary coils. The connection of two lead wires in main coil is the same with second-line ballast, both of them connect between the lamp and power supply in series. The two lead wires in auxiliary coil connect between the starter and the tube in series to help starting. As the number of turns in secondary coil is few, AC impedance is small, if it is mistakenly connected to the main road of the power supply, it will burn lamps and ballasts. Therefore, before the rectifier accessing in circuit, you must see the connection description, to distinguish main and auxiliary coils. Multimeter can also be used as detecting, the higher resistance of coil is main coil. (View)

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Delay light circuit wiht power switch integrated circuit(1)

Published:2011/4/15 22:47:00 Author:Nicole | Keyword: Delay light, power switch

Delay light circuit wiht power switch integrated circuit(1)
The delay time with power switch integrated circuit is as shown, it is composed of capacitance charge-discharge loop, TWH8751 power switch integrated circuit, power supply and so on. (View)

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Delay light circuit with battery

Published:2011/4/15 22:30:00 Author:Nicole | Keyword: delay light, battery

Delay light circuit with battery
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Small night light with capacity ballasting(1W)

Published:2011/4/15 22:32:00 Author:Nicole | Keyword: small night light, capacity ballasting

Small night light with capacity ballasting(1W)
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SIC24P used in drive DC LED application circuit

Published:2011/4/15 21:36:00 Author:Nicole | Keyword: DC LED

SIC24P used in drive DC LED application circuit
This IC has the advantages of low power consumption, strong drive and so on, it has few circuit outward turning components and use conveniently. It is widely used in advertising stage arrangement, brooches and interior decoration. (View)

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LED slow charge circuit

Published:2011/4/6 22:49:00 Author:Nicole | Keyword: LED, charge

LED slow charge circuit
LED uses NSL4944 which produced by National Semiconductor Company, it has the characteristics of constant current. After input AC power supply, and through half wave rectification charging circuit, it can charge to 1.5~6.0V battery slowly. (View)

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Electric health care night light circuit diagram

Published:2011/4/14 1:34:00 Author:Rebekka | Keyword: Electric health care night light

The result of psychological medisine shows that if one stay in darkness for a long time, he will become sullen. Regulation of the human endocrine will be effected. So it is good to health when you sleep with low light. Here is one electric health care night light. The internal wiring is shown as above. The capacitance reduce the 220V municipal electric power. After rectification of diode D1-D4, it supports diode D5-D9 lightening. The diode uses green light, because green light makes one feel calm and relax. The light of the electric health care night light is soft. It looks like the light of moon and make a warm atmosphere. It helps one become calm and fall asleep peacefully. The light uses semiconductor light emitting devices. The power is only 0.3 Watt. It saves power a lot and durable. (View)