Published:2011/5/4 9:50:00 Author:Nancy | Keyword: photoelectric switch
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Published:2011/5/4 9:58:00 Author:Nancy | Keyword: FET
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Published:2011/5/4 9:59:00 Author:Nancy | Keyword: FET
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Published:2011/5/4 10:15:00 Author:Nancy | Keyword: FET
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Published:2011/5/4 9:20:00 Author:Nancy | Keyword: crystal diode
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Published:2011/5/4 9:10:00 Author:Nancy | Keyword: crystal diode
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Published:2011/5/4 9:13:00 Author:Nancy | Keyword: crystal diode
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Published:2011/5/4 9:14:00 Author:Nancy | Keyword: crystal diode
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Published:2011/5/4 9:17:00 Author:Nancy | Keyword: crystal diode
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Published:2011/5/4 7:39:00 Author:Joyce | Keyword: 5V, Rate, Continuously Adjustable, Flasher
5V Rate Continuously Adjustable Flasher Circuit (View)
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Published:2011/5/4 3:38:00 Author:Ecco | Keyword: Typical wiring, driving , common cathode, LED , digital tube
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Published:2011/4/29 4:50:00 Author:Nicole | Keyword: photoelectric isolator
Using negative feedback technology can improve the transport linearity of photoelectric isolator device.
In figure (a), when D1 is in the feedback path, its current is linear with V1. The shortage of this circuit is not considering the nonlinear relationship between photoelectric isolator device current current transfer ratio and working current. So we should choose and adjust devicecarefully.
In figure (b), increasing secondary feedback can improve the linearity. The circuit gain is 1, the frequency is 0~30kHz, the dynamic range is -8~+8V, the nonlinear distortion(it is ±8V)is lower than 0.5%, the noise is lower than 1mV, the common-mode voltage is higher than 250V. (View)
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Published:2011/5/3 3:00:00 Author:Felicity | Keyword: Internal Circuit,
The picture above shows NTJD4401N、NTJD4401N Internal Circuit . (View)
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Published:2011/5/3 9:31:00 Author:Felicity | Keyword: Power Amplifier Circuit
The picture above shows the TDA8190 Power Amplifier Circuit. (View)
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Published:2011/5/3 22:44:00 Author:Ecco | Keyword: typical application , IC
The typical application circuit
The typical application circuit of LA4505 IC is shown as the chart, the left and right audio signals is input from the foot and pin ⑧ of LA4505 and it is amplified and output from ④ feet to drive the speaker power, and the power can reach ten 8W 8W (RL30).
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Published:2011/5/3 21:02:00 Author:Ecco | Keyword: brightness , coutesy switch
The brightness adjustment circuit diagram using coutesy switch(LX1970 visible light sensor) is shown as the chart. The circuit has the following characteristics: First, it uses a CMOS gate to control the LX1970 power, only when the gate outputs high level, LX1970 gets power, LX1970 is a micro-power device, so the power voltage can be provided by gate circuit; Second, the SRC end is connected a blocking diode in series (VD), when LX1970 power cuts off, VD stops, it can play a role of isolation, so that light signals can not be added to the LX1970, and it can play a protective role; Third, + 3.3V DC voltage signal and the PWM signal can be equivalent to the two logic or gate input signals, therefore, changing the DC voltage can also adjust the brightness. VD could choose 1N4148 high-speed switching silicon diode. (View)
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Published:2011/5/3 20:28:00 Author:Ecco | Keyword: typical application circuit , IC
The typical application circuit
The typical application circuit of colorful TV composed of LA76810 IC is shown as the chart.
The typical application circuit of LA76810 IC is shown as the chart. (View)
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Published:2011/5/3 20:34:00 Author:Ecco | Keyword: internal block , typical application circuit , IC
LA7830 IC includes field excitation, field output, field blanking circuit and overheat protection circuit and so on, the block diagram is shown as the chart.
The internal block and typical application circuit diagram of LA7830 IC is shown as the chart. (View)
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Published:2011/5/3 20:51:00 Author:Ecco | Keyword: Motor, steady speed , typical application circuit, IC
The typical application circuit
Motor steady speed typical application circuit diagram composed of LA5521 IC is shown as the chart.
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Published:2011/5/3 20:48:00 Author:Ecco | Keyword: typical application circuit, IC
The typical application circuit
The power typical application circuit composed of LA5611 IC is shown as the chart.
The typical application circuit diagram of LA5611 IC is shown as the chart. (View)
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