Published:2011/4/1 1:41:00 Author:Rebekka | Keyword: Crystal diode, internal circuit
Crystal diode QZX363C12 internal circuit diagram is shown as below.
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Published:2011/4/1 1:49:00 Author:Rebekka | Keyword: Crystal diode, internal circuit
Crystal diode HZM6.5Z4MFA internal circuit diagram is shown as below.
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Published:2011/4/6 21:41:00 Author:Ecco | Keyword: Stepless dimming lamp
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Published:2011/4/6 20:47:00 Author:Ecco | Keyword: single switch, controlling , three lights
A single switch controlling three lights
The circuit of a single switch controlling three lights and over three lights is shown in Figure 3, we should note that the current through the switch can not exceed the limit of the switch.
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Published:2011/4/6 21:22:00 Author:Ecco | Keyword: UV, germicidal lamp , wiring method
UV germicidal lamp wiring method
UV germicidal lamps are suitable for medical, pharmaceutical industries, the connection between light and power is shown in Figure 16, UV germicidal lamp must connect with the special magnetic leakage transformer which meet the matching requirements.
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Published:2011/4/6 21:39:00 Author:Ecco | Keyword: Homemade , 20W, fluorescent lamp , dimmer
Homemade 20W fluorescent lamp dimmer
Using the method of connecting capacitor in series can easily control the brightness of fluorescent lamps. To adapt to different lighting requirements. Figure 28 is a modified circuit diagram. When the switch connects to the 1 , the brightness of the lamp is normal, the actual power is 20w; and connects to 2 , brightness is medium, power is about 10w; and connects 3 , the brightness is faint, and the power of about 5w.
We should pay attentionon the lamp must belit properly before dimming. Dimming dial switching action must be fast, or the light will be turned off when the switch opening too long, and the switch needs to re-start.
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Published:2011/4/6 21:23:00 Author:Ecco | Keyword: Touching lamp
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Published:2011/3/31 1:35:00 Author:Rebekka | Keyword: Automatic lights
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Published:2011/4/1 0:51:00 Author:Rebekka | Keyword: led fluorescent lamp drive
led fluorescent lamp drive circuit diagram is shown as below.
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Published:2011/4/1 0:52:00 Author:Rebekka | Keyword: Crystal diode
Crystal diode STTH20004VT1 internal circuit diagram is shown as below.
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Published:2011/3/31 22:44:00 Author:Rebekka | Keyword: Transistor , internal circuit
Transistor DDC123JH, DDC123JH-7, DDC124EH-7, DDC143EH-7 internal circuit diagram is shown as below.
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Published:2011/3/31 22:46:00 Author:Rebekka | Keyword: Transistor, internal circuit
Transistor DDC143TH, DDC143TH-7, DDC144EH, DDC144EH-7 internal circuit diagram is shown as below.
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Published:2011/3/29 2:46:00 Author:Jessie | Keyword: elevator, indicator light
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Published:2011/3/29 20:07:00 Author:Ecco | Keyword: white LED drive
According to the figure, it is a circuit diagram of white LED drive composed by the MAX1554. It is the white LED drive circuit whichis supplied by 2 to 4 section batteries, the brightness's maximum will keep constant. The Rl is a current examination resistance, its resistivity is 27 Ω, therefore LED current is about 10 mA. For enlarging current, the L1 needs to adopt a saturated density of magnetic flux higher inductance.
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Published:2011/3/29 20:03:00 Author:Ecco | Keyword: light signal receiving
This circuitry adopts the photoelectric cell IR-B2 M type to receive semaphore. Optics semaphore can be optical light or infrared light, and it takes the LED or semiconductor laser machine as light source, and the municipally frequency should be 0.5~2.0 KHZ. When the photocell is irradiated, it can produce quadrature voltage and be amplifiered by Q1, Q2, then the voltage will pass a output transformer which mutually matches with earphone impedance. Consequently, we can use earphone to hear the sound clearly.
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Published:2011/3/28 1:15:00 Author:Ecco | Keyword: LED
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Published:2011/3/23 4:46:00 Author:Nicole | Keyword: LED digital tube, display drive
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Published:2011/3/20 22:54:00 Author:Ecco | Keyword: 6B59 Drive, LED display
6B59 Drive LED display circuit diagram is as below:
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Published:2011/3/20 22:51:00 Author:Ecco | Keyword: LED drive
LED drive circuit diagram is as below:
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Published:2011/3/24 20:45:00 Author:Ecco | Keyword: Solid laser , range finder
This circuitry zooms in magnification of 1200000 times, the bandwidth is 0.5~14 Mhzs, the input impedance is 700 Ω, the output impedance is 35 Ω(to measure in the 5 MHZ), the output level of noise is 0.6~0.8 V.
In the chart, T1 and T2 are direct coupling amplifiers, and be current negative feedback in parallel connection. The promotion of T2's emitter level by steady diode 2CM11 to assure the level installing relationship between T1 and T2.
T3 and T4 is a pair of direct-coupling feedback, belonging to voltage current negative feedback in series connection. It can increase the transmitting coefficient of low load impedance by derating output impedance.
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