Published:2011/4/8 0:37:00 Author:muriel | Keyword: MOSFET, IGBT, functional block diagram
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Published:2011/4/8 0:37:00 Author:muriel | Keyword: TX-KD501, application cording diagram, driver
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Published:2011/4/8 0:36:00 Author:muriel | Keyword: MiniSkiip circuit
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Published:2011/4/8 0:35:00 Author:muriel | Keyword: Frequency converter, control drive main circuit
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Published:2011/4/7 22:58:00 Author:muriel | Keyword: overcurrent waveform circuit
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Published:2011/4/7 22:58:00 Author:muriel | Keyword: driver etection
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Published:2011/4/8 0:38:00 Author:muriel | Keyword: application cording diagram, KD10X
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Published:2011/4/8 0:38:00 Author:muriel | Keyword: IGBT driver, application cording diagram
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Published:2011/4/8 0:39:00 Author:muriel | Keyword: IGBT driver, functional block diagram
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Published:2011/4/7 22:57:00 Author:muriel | Keyword: Internal structure schematic diagram , pulse width , modulator
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Published:2011/4/10 22:51:00 Author:may | Keyword: internal structure, working principle
M579 series driver is a kind of series driver module offer for IGBT driver produced by MITSUBISH company.
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Published:2011/4/14 4:18:00 Author:may | Keyword: DC 12V sine AC 22Dv, 50N, 10W, converter
The transistor in this circuit adopts the working mode of single side class b amplification. It can adjust the amplification factor of transistor by potentiometer R3. We must consider the corresponding frequency variation if load part including idle component.
Main technical data:
Battery voltage: 12V
Battery current: 2.5A
Output voltage: 220V, 50Hz
Rated output power: 10W
Transistor loss power: 7W
Cooling plate area: 200cm2
Transformer data:
n1=65turns, 1.2mm copper lacquered wire
n2=650turns, 0.29mm copper lacquered wire
n1=2050turns, 0.14mm copper lacquered wire
n1=100turns, 0.45mm copper lacquered wire
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Published:2011/3/25 3:17:00 Author:may | Keyword: MCU and RS232 serial interface wiring diagram
MCU and RS232 serial interface wiring diagram circuit is shown in the diagram:
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Published:2011/3/25 3:15:00 Author:may | Keyword: serial port
87lpc76 serial port circuit is show in the following diagram:
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Published:2011/4/18 19:59:00 Author:Ecco | Keyword: Reading , writing , posture , reminder
When primary and secondary students do reading and writing, it is easy to affect the visual and physical health with wrong sitting position for a long time. This example describes the reading and writing posture reminder, it can help the user correct the posture by emitting the warning sounds when the position of the user is not correct.
The working principle.
Reading and writing posture reminder circuit is composed ofelectronic switch circuit, alarm circuit and power circuit, it is shown as the Figure 9-160.
Electronic switching circuit is composedof the glass shell mercury switch S2, the transistor Vl, V2 and resistors
Alarm circuitis composed ofthe integrated circuit IC, audio amplification tube V3and speaker BL.
The power supply circuit is composed of power supply GB and power switch Sl.
Turning the power switch Sl, the powersupply GBprovides operating voltage for the machine.
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Published:2011/4/18 6:02:00 Author:May | Keyword: Active input, rectifier
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Published:2011/4/18 7:19:00 Author:Jessie | Keyword: air flow meter, evaporative emission
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Published:2011/3/22 1:54:00 Author:muriel | Keyword: CMOS, Logic probe circuit
This circuit is a tool for the diagnosis of failure to display important state after link to microprocessors. When the TTL input is 1 , LED light; when the input is 0 , LED does not light. When the input from the 1 to 0 or 0 to 1 , the edge of the LED-2 light once. Input end use CMOS inverter buffer 3a, that can prevent the probe influence microprocessor. (View)
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Published:2011/3/22 21:03:00 Author:muriel | Keyword: inverter, 12V-230V, 1KW, TL081, CD4013, CA3130, BCY79, μA741, BS250, 2N7000
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Published:2011/4/14 2:19:00 Author:Ecco | Keyword: speaker , high bass frequency divider
The connectionmethod of speaker and high bass frequency divider is shown as the chart 212: The inductors and the bass speakers connect in series, capacitors and the tweeter connect in series. The capacitor is used as AC capacitor that made by two small-capacity capacitors, inductance coil can be self-made. If it's a 10-inch box speaker, and the power is between 5 ~ 10W, the inductance coi could choose the size of 0.85mH. If chosen an empty skeleton with the core diameter in 3cm, it can be made by the line with the diameter in 0.8 to 1.0 mm and rolled with 300 laps.
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