Published:2011/3/23 21:18:00 Author:muriel | Keyword: AC distribution unit, monitoring alarm circuit, P50-II
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Published:2011/3/23 21:26:00 Author:muriel | Keyword: Low cost, power factor, correcting circuit, IGBT switch, MC34262
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Published:2011/3/23 21:27:00 Author:muriel | Keyword: Low cost , CFL electronic ballast circuit, IGBT switch, MUR180
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Published:2011/3/23 21:29:00 Author:muriel | Keyword: IGBT , turn-off voltage waveform, hard switching , chopper circuit
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Published:2011/4/12 22:55:00 Author:Rebekka | Keyword: Crystal diode
Crystal diode STTH60L06TV2 and STTH6110TV2 internal circuit diagram is shown as above. (View)
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Published:2011/4/12 22:52:00 Author:Rebekka | Keyword: CMos drive circuit
CD4054 A, CD4055A or CD4056A CMOS direct drive 7 LCD display digit.The circuit has the feature of internal level shift. The feature is to change 5V logical rotation to state-driven consumption LCD. It is integrant for 30V peak AC signal used by the LCD.
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Published:2011/3/23 21:37:00 Author:muriel | Keyword: Bypass switch, IGBT
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Published:2011/3/23 21:44:00 Author:muriel | Keyword: QRC , Soft Switching, flyback converter , schematic diagram
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Published:2011/3/23 21:48:00 Author:muriel | Keyword: IF, HVPS , PWM circuit, SG3524, PM10CSJ060
The connection of PWM signal and IPM intelligent power module PM10CSJ060 :
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Published:2011/3/23 21:49:00 Author:muriel | Keyword: Driver , integrated circuit, TLP250
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Published:2011/3/23 21:50:00 Author:muriel | Keyword: IGBT , drive circuit, discrete component, TLP560
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Published:2011/3/23 21:56:00 Author:muriel | Keyword: Active , clamped, RDCLI , power circuit
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Published:2011/4/13 2:17:00 Author:Ecco | Keyword: multivibrator
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Published:2011/4/13 2:15:00 Author:Ecco | Keyword: pulse generator w, adjustable duty cycle , adjustable frequency
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Published:2011/4/13 2:14:00 Author:Ecco | Keyword: Pulse width, controllable , pulse generator
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Published:2011/4/13 2:12:00 Author:Ecco | Keyword: Simple , pulse signal generator
The simple pulse generator circuit is shown as the chart. The pulse generator mainly adopts two TTL signal generator IC (74LS00 and 74LS221) to generte the τ = 4μs pulse signal, it uses fewer components, so it's easy to do debugging and maintenance.
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Published:2011/4/13 2:05:00 Author:Ecco | Keyword: Self-control, digital inverter, power supply
It does not require the establishment of a separate power switch or transformation to switches in the table. The circuit has the advantages of low power consumption, stability and reliability, no effect on instrument accuracy and so on. The transformer T in the circuit is E3-type core, to cut off each corner and process to be the mouth shape, L2 is inside while LJ is outside. When the inverter power supply works, the battery current is about 70mA. As shown in the chart:
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Published:2011/4/12 22:44:00 Author:Rebekka | Keyword: Light control LED flashing
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Published:2011/4/12 22:42:00 Author:Rebekka | Keyword: Direct drive LCD display
Each part of LCD has individual counter, latch, decoder and driver. Pumping signal feeds back to the motherboard of LCD. When the display section is disconnected, the phase and amplitude of the motherboard and display segment drive signal are the same. It shows no voltage on the 2 ends of display. When the display segment is triggered, its pumping signal phase position will be lager than 180 °, so the square wave voltage is 2 times than power supply voltage value. BCD code input signal can be produced from the dual BCD counter of cascade MC14518.
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Published:2011/4/13 1:50:00 Author:Ecco | Keyword: LC , square wave , generator
Square-wave generator with LC circuit can get a better frequency stability, it's as shown in the chart. This three-terminal oscillator of capacitor can be used to generate a square wave, but an operational amplifier is used as the active component.
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