Published:2011/4/6 21:26:00 Author:Rebekka | Keyword: Ford focus, central junction box
Ford focus central junction box circuit diagram is shown as below.
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Published:2011/4/6 4:08:00 Author:Ecco | Keyword: ring oscillator , delay circuit , TTL NOT gate
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Published:2011/4/6 20:11:00 Author:Ecco | Keyword: Duty ratio , frequency adjustable , multivibrator, double monostable trigger
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Published:2011/4/6 2:42:00 Author:Ecco | Keyword: Square wave , sawtooth wave , oscillator
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Published:2011/4/6 2:44:00 Author:Ecco | Keyword: Square wave , triangle wave , oscillator
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Published:2011/4/7 2:04:00 Author:Ecco | Keyword: General connection method , fluorescent lamp
General connection method of fluorescent lamp
Fluorescent lamps used in homes and public places lighting and so on, with luminous efficiency, long service life, Figure 20 is the general wiring diagram for lamp.
Fluorescent working principle: When the switch is closed, power is on, the lamp doesn't start to discharge , power supply voltage is added to two metal contacts of the starter through the filament, then the neon tube produces glow discharge and heat, the two contacts are connected, so the current through the ballast and the filament at both ends of the tube, the filament heating and emits electrons. At this time, the neon tubes are short cut by metal contacts and stop producing glow discharge, two metal contacts are separated by temperature declining. At this moment, the ballast will produce high induced electromotive force, which is added to the supply voltage in series and causes producing glow discharge at both ends of the lamp, so fluorescent is lit.
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Published:2011/4/10 21:00:00 Author:Ecco | Keyword: Optical controlling switch , LDR transistor
When there's incident light, the LDR in the circuit connects to high level or zero level. The transistor amplification factor βshould be higher than 100, the value of LDR is between 00Ω ~ 100kΩ, they are suitable for bright light and dark shooting situations respectively. If you want to control the high power load, you should adopt Darlington transistors.
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Published:2011/3/23 5:50:00 Author:may | Keyword: switch power supply
VCD-AB115 switch power supply circuit is shown in the following diagram:
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Published:2011/3/23 5:47:00 Author:may | Keyword: Three-phase stepping motor
diagram: Three-phase stepping motor (View)
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Published:2011/4/7 2:40:00 Author:Ecco | Keyword: diode , extend life , incandescent lamp
Using diode to extend life of incandescent lamp
In the places which are less demand of illumination such as the stairs, corridors, toilets and so on, this method can be used to extend lamp life. That's to add a rectifier of which current is 1A and voltage is higher than 400V in pulling switch.
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Published:2011/3/22 3:18:00 Author:may | Keyword: Control
Control circuit of a frying pan is shown in the following diagram:
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Published:2011/3/24 22:18:00 Author:may | Keyword: Electric fan use PTC device add breeze files
Electric fan use PTC device add breeze files circuit is shown in the diagram:
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Published:2011/3/24 22:09:00 Author:may | Keyword: external small power audio amplifier
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Published:2011/3/24 22:11:00 Author:may | Keyword: Electric fan stepless speed regulation
Electric fan stepless speed regulation circuit diagram is shown in the diagram:
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Published:2011/3/27 22:37:00 Author:may | Keyword: Low noisecrystal oscillator, sine wave crystal oscillator
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Published:2011/3/27 22:36:00 Author:may | Keyword: RC coupled amplifier circuit, Adjustable volume amplifier
Adjustable volume RC coupled amplifier circuit is shown in the diagram:
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Published:2011/3/28 22:40:00 Author:may | Keyword: Fan reactor speed controller
Fan reactor speed controller circuit is shown in the diagram:
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Published:2011/3/28 22:36:00 Author:may | Keyword: super regenerative wireless remote control reception
SB-100ARX super regenerative wireless remote control reception circuit is shown in the diagram:
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Published:2011/3/25 3:10:00 Author:may | Keyword: operational amplifier, current feedback operational amplifier
OPA603 current feedback operational amplifier circuit is shown in the following diagram:
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Published:2011/4/7 2:44:00 Author:Ecco | Keyword: diode , household appliances indicator
Using diode to extend the life of incandescent
In the places which are less demand of illumination such as the stairs, corridors, toilets and so on, this method can be used to extend lamp life. That's to add a rectifier of which current is 1A and voltage is higher than 400V in pulling switch.
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