Published:2011/4/10 21:51:00 Author:Jessie | Keyword: computer control leveling
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Published:2011/4/10 21:47:00 Author:Jessie | Keyword: gating lamp
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Published:2011/4/7 19:56:00 Author:may | Keyword: Metamorphous, half-bridge type convertor
We usually adopt the circuit mode in the diagram in the situation of high voltage input, high power output. In the circuit, switching element V1, V2 is a group, V3, V4 is a group, series each other, which can reduce single tube withstand voltage. In practical application circuit, switching element V1, V2, V3, V4 can use two tubes or multi-tube parallel. In this way can solve the problem of high current output. Sharing transformer can increase the operating factor of transformer and have the ability of resisting imbalance. In metamorphous half-bridge type power converting circuit, V1, V2 or V3, V4, the maximum each switching tube withstand voltage only is Uc1 or Uc2 value. If C1=C2, than Uc1=Uc2=Uin/2 value, so we can choose switching tube of reducing withstand voltage. In addition, V1, V2, V3, V4 can adopts multi-tube parallel mode to work, which can add the capacity of output current; it greatly raise the efficiency of transformer that transformer T can working at positive and negative direction. Because of merit above-mentioned, this circuit has widespread use, especially in the situation of high voltage input and high power output. The application of this circuit is more and more widespread. (View)
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Published:2011/4/10 21:36:00 Author:Jessie | Keyword: dashboards
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Published:2011/4/10 21:34:00 Author:Jessie | Keyword: electronic steering
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Published:2011/4/10 21:18:00 Author:Jessie | Keyword: cruise control
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Published:2011/3/24 3:27:00 Author:Jessie | Keyword: Single junction transistor, trigger thyristor, pulse transformer
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Published:2011/4/7 1:43:00 Author:Rebekka | Keyword: Infrared light-emitting diode
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Published:2011/4/7 1:47:00 Author:Rebekka | Keyword: The DC pulse current drive , infrared light-emitting diode
V as the drive pulse voltage, drive current is pulsed current. (View)
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Published:2011/4/7 1:38:00 Author:Rebekka | Keyword: Digital display type, photoelectric counting
The circuit consists of optical input circuit (VD, VT), count pulse forming circuit (555), rate adjustment circuit (IC5, IC6) and counting and display circuit (CD40110).
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Published:2011/4/6 2:13:00 Author:Rebekka | Keyword: Human control electric fan
TC625 integrated temperature control circuit. (View)
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Published:2011/4/7 4:04:00 Author:Rebekka | Keyword: Pyroelectric infrared sensor
Anti-theft alarm system block diagram:
Power circuit:
Alarm circuit:
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Published:2011/4/7 4:13:00 Author:Rebekka | Keyword: Pyroelectric infrared sensor, automatic door control , language voice
The circui is shown as the figure. It is composed of Pyroelectric infrared sensor module, the delay control networks, optical coupling and the SCR control circuit, language voice circuits, AC buck rectifier. HN911D is a pyroelectric infrared detector module. (View)
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Published:2011/4/7 4:05:00 Author:Rebekka | Keyword: Pyroelectric infrared monitoring
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Published:2011/4/7 4:07:00 Author:Rebekka | Keyword: Pyroelectric infrared control , automatic lighting control
RDP-18 is a new pyroelectric infrared control component. (View)
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Published:2011/4/8 2:02:00 Author:Rebekka | Keyword: Pyroelectric control , automatic energy-saving lamps
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Published:2011/4/7 3:38:00 Author:Rebekka | Keyword: Pyroelectricity human body induction switch
YX7603C is a pyroelectric infrared control integrated circuit which has a perfect function. The pyroelectricity human body induction lamp composed of the circuit has many control functions. (View)
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Published:2011/4/7 3:41:00 Author:Rebekka | Keyword: Pulse dialing , infrared seven-way remote power switch
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Published:2011/4/10 21:50:00 Author:may | Keyword: IGBT, over current protection
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Published:2011/4/7 3:50:00 Author:Rebekka | Keyword: Six-way infrared, remote control power switch
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