Published:2011/6/24 2:41:00 Author: | Keyword: Computer Mainboard, 440LX_24
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Published:2011/6/24 2:42:00 Author: | Keyword: Computer Mainboard, 440LX_23
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Published:2011/6/24 2:44:00 Author: | Keyword: Computer Mainboard, 440LX_22
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Published:2011/6/24 2:46:00 Author: | Keyword: Computer Mainboard, 440LX_21
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Published:2011/6/24 2:46:00 Author: | Keyword: Computer Mainboard, 440LX_20
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Published:2011/6/29 0:50:00 Author:Seven | Keyword: multi-function, integrated circuits
In the figure is the multi-function dimmer circuit of HT7760 special integrated circuits, which has four different dimming functions of stepless dimming, step dimming, lights-out delay and circling auto lights-out. B can be a common voltage pottery chip, other parameters are shown in the figure, which have no special regulation.
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Published:2011/6/29 0:43:00 Author:Seven | Keyword: dimming lamp, V-MOSFET
The simple V-MOSFET dimming lamp circuit is shown in the circuit, which harnesses the features of V-MOSFET that its impedance is high and controls the bulb current by adjusting the bias voltage of the V-MOS pipe grid, so that the brightness of the bulb is changed. The power of E is not higher than 60W.
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Published:2011/6/29 4:53:00 Author:Seven | Keyword: transistor, power amplifier
The 811 transistor power amplifier circuit is shown as above.
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Published:2011/6/29 5:10:00 Author:Seven | Keyword: dual key, FET dimmer
The dual key FET dimmer circuit is shown in the figure, which adopts two light touch switches to regulate the brightness, one of them is to raise the brightness, the other is to reduce to brightness. It is easy to use and its outline is pretty.
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Published:2011/6/29 5:25:00 Author:Seven | Keyword: push-pull, power amplifier
The 811A push-pull 30W power amplifier circuitis shown as above.
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Published:2011/6/22 10:00:00 Author:Nancy | Keyword: Nissan, brake lamp
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Published:2011/6/29 5:22:00 Author:Seven | Keyword: circuit
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Published:2011/6/29 21:02:00 Author:Seven | Keyword: thyristor dimmer, single knot transistor
1.To increase the stability of the bulb, we can adopt the single-knot transistor trigger circuit in the following figure.
2.See as the figured circuit, VT1 can be 3CT1 or MCR100-8 single-way transistor.
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Published:2011/6/29 5:42:00 Author:Seven | Keyword: gallstone, rear stage, power supply
The supreme TA-292C gallstone mixing rear stage power supply circuit is shown above.
The gallstone mixing power amplifier of beautiful sound (View)
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Published:2011/6/29 5:37:00 Author:Seven | Keyword: pulse width, speed regultating motor
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Published:2011/6/29 5:44:00 Author:Seven | Keyword: power supply
The 100W power supply circuit driven by TDA7250 is shown as above.
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Published:2011/6/29 5:46:00 Author:Seven | Keyword: chasing type
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Published:2011/6/19 5:15:00 Author:Vicky | Keyword: FSK/ASK 433MHz Emitter
TH72015 applied circuit
TH72015 is a FSK/ASK emitter specially designed for application for European 433 MHz ISM frequency range, which reaches EN 300 220 wireless communication standard. It is available for application in keyless entering system, remote control/remote-measuring system , data communication system and security system etc.
Main technical features are as follows:
·Work frequency: 380~450 MHz;
·Singal-ended RF output;
·FSK modulation rate: DC~40 Kb/s;
·ASK modulation rate up to 40 Kb/s;
·Voltage of power supply: l.9~5.5 V;
·Work current: 3.5~10.7 mA, stand-by current: 0.1μA;
·Output power: -12~+8.5 dBm.
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Published:2011/6/29 5:35:00 Author:Seven | Keyword: dual-way thyristor, dimmer circuit
In the figure is the simplest dual-way thyristor dimmer circuit, the feature of the dual-way thyristor is that whether the AC is in its positive or passive half circle, just add a proper trigger pulse or control circuit on its control pole, the thyristor will be passable, and the conducting time is relative to the pulse width or gate current. The brightness of bulb E can be changed by adjusting RP.
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Published:2011/6/19 5:17:00 Author:Vicky | Keyword: ASK 433MHz Emitter
TH72012 applied circuit
TH72012 is monolithic emitter chip which reaches standard of EN 300 220 and the analogs. It is available for keyless entering system, remote control/ remote measuring system, data communication system and security system etc.
Main technical features are as follows;:
·Completely integrated and stable PLL;
·Work frequency: 380~450 MHz;
·Single-ended RF output;
·ASK modulation mode;
·ASK modulation rate up to 40 Kb/s;
·Voltage of power supply: l.9~5.5 V;
·Work current: 3.5~10.7 mA, stand-by current: 0.1μA;
·Output power: -12~+8.5 dBm. (View)
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