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Computer Mainboard Circuit 440BX_22

Published:2011/6/26 21:44:00 Author:zj | Keyword: Computer Mainboard, 440BX_22

Computer Mainboard Circuit 440BX_22
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Computer Mainboard Circuit 440BX_21

Published:2011/6/26 21:44:00 Author:zj | Keyword: Computer Mainboard, 440BX_21

Computer Mainboard Circuit 440BX_21
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Computer Mainboard Circuit 440BX_20

Published:2011/6/26 21:45:00 Author:zj | Keyword: Computer Mainboard, 440BX_20

Computer Mainboard Circuit 440BX_20
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Computer Mainboard Circuit 440BX_19

Published:2011/6/26 21:46:00 Author:zj | Keyword: Computer Mainboard, 440BX_19

Computer Mainboard Circuit 440BX_19
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The oscillating circuit with the output of sine and square waves(LM111 and LM101A)

Published:2011/6/14 2:08:00 Author:Borg | Keyword: oscillating circuit, sine and square waves

The oscillating circuit with the output of sine and square waves(LM111 and LM101A)

In ordinary RC oscillating circuits, if we want a wide frequency changing range, we not only need to change the resistor, but also need to change the capacitor. However, this circuit only needs a resistor R3 to do this. In the figure, the computing amplifier LM101A forms a band-pass filter, LM111 is a LEV comparator which forms a amplitude limiter. Because of the forward and backward feedbacks, an oscillation is generated between them. The LEV comparator outputs a sine wave, but the filter only picks out the basic wave, so that LM101A outputs a sine wave. (View)

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Computer Mainboard Circuit 440BX_17

Published:2011/6/26 21:48:00 Author:zj | Keyword: Computer Mainboard, 440BX_17

Computer Mainboard Circuit 440BX_17
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Computer Mainboard Circuit 440BX_16

Published:2011/6/26 21:49:00 Author:zj | Keyword: Computer Mainboard, 440BX_16

Computer Mainboard Circuit 440BX_16
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Computer Mainboard Circuit 440BX_15

Published:2011/6/26 21:50:00 Author:zj | Keyword: Computer Mainboard, 440BX_15

Computer Mainboard Circuit 440BX_15
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The air-conditioner control circuit of Xiali TJ7100.7100U

Published:2011/6/14 20:30:00 Author:Borg | Keyword: air-conditioning, control circuit, Xiali

The air-conditioner control circuit of Xiali TJ7100.7100U
1-battery; 2-igniting switch; 3-additional resistance of igniting coil; 4-igniting coil; 5-electricity distributor; 6-electricity cutter; 7-rotating speed sensor(low pass filter); 8-filter capacitor; 9-air-conditioning control; 10-idling speed raising equipment; 11-diode; 12-compressor electric-magnetic clutch; 13-cooling fan relay; 14-cooling fan motor(condenser and radiator);15-air-conditioning switch; 16-air-conditioning switch; 17-thermistor; 18-air blower switch; 19-air-conditioning blower; 20-blower speed-adjusting resistance (View)