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Emitter-coupled bistable circuit with changable action of circuit

Published:2011/10/18 21:57:00 Author:Ecco | Keyword: Emitter-coupled bistable , changingable action

Emitter-coupled bistable circuit with changable action of circuit
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Astable circuit with sub-file adjusting pulse width

Published:2011/10/18 22:06:00 Author:Ecco | Keyword: Astable circuit , sub-file adjusting , pulse width

Astable circuit with sub-file adjusting pulse width
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The winding tap T- connection three-speed circuit of single-phase motor

Published:2011/12/7 20:51:00 Author:Ecco | Keyword: winding tap , T- connection , three-speed , single-phase motor

The winding tap T- connection three-speed circuit of single-phase motor
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The winding tap L-2 connection three-speed circuit of single-phase motor

Published:2011/12/7 20:53:00 Author:Ecco | Keyword: winding tap , connection , three-speed circuit , single-phase motor

The winding tap L-2 connection three-speed circuit of single-phase motor
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The structure of ultrasonic sensor

Published:2011/9/16 0:58:00 Author:Rebekka | Keyword: structure, ultrasonic sensor

The structure of ultrasonic sensor
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6Y7 Monolithic automatic voltmeter

Published:2011/9/15 21:16:00 Author:Rebekka | Keyword: Monolithic automatic voltmeter

6Y7 Monolithic automatic voltmeter
Overview:1. Low power consumption: We hope two ordinary button battery can be used for half an year.2. Low voltage: It does not use bulky batteries such as 5 # battery or tandem structure.3. High precision: It owns 31/2 or more precision.4. High stability: It requires a good reading stability.5. Low-cost: The cost of chip is lower than RMB10.00.6. Automatic: Fool-type operation.7. Monolithic: It does not use other active devices such as reference power and thermistor etc.That is these requirements produce the following design requirements.1. Use ordinary digital circuits manufacturing chip.2. Precision reference supply.3. Precision comparator.4. Precision Rectifier.5. 3V power supply.6. Working current is lower than 1MA.7. Analog / digital conversion.8. The least amount of external adjustment. (View)

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Optocoupler level conversion circuit diagram

Published:2011/9/27 20:56:00 Author:Rebekka | Keyword: Optocoupler level conversion

Optocoupler level conversion circuit diagram
For different level conversion circuits, or input, output circuits , ifits levelneeds to be separated, it is more convenient to use optical couplers.Figures(a) and (b) circuits are 5V power supply TTL IC and 15V power supply HTL IC. Each circuit is connected and conducted level. In figure (a), when TTL gate circuit turns on, it outputs low level, then the light-emitting diode turns on, phototransistor outputs high level; TTL gates close, then the light-emitting diode cuts off, phototransistor outputs low level. In figure (b),it uses TTL outputs high level, light-emitting diode turns on, photo transistor outputs low level; TTL conduction outputs low level, then LED isoff, and phototransistor outputs high level. (View)

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C8051F EC2 JTAG emulator circuit diagram

Published:2011/12/9 0:50:00 Author:Ecco | Keyword: JTAG emulator

C8051F EC2 JTAG emulator circuit diagram
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CD-ROM interface schematic circuit diagram

Published:2011/12/9 0:49:00 Author:Ecco | Keyword: CD-ROM interface , schematic

CD-ROM interface schematic circuit diagram
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The high-performance 500 multimeter circuit diagram

Published:2011/12/9 0:49:00 Author:Ecco | Keyword: high-performance , multimeter

The high-performance 500 multimeter circuit diagram
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The LCD digital thermometer circuit using 7136

Published:2011/12/8 20:43:00 Author:Ecco | Keyword: LCD digital thermometer

The LCD digital thermometer circuit using 7136
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Adjustable voltage-stabilizing circuit with current limiting protection function

Published:2011/12/8 20:51:00 Author:Ecco | Keyword: Adjustable , voltage-stabilizing circuit , current limiting, protection function

Adjustable voltage-stabilizing circuit with current limiting protection function
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Memory internal memory circuit diagram

Published:2011/12/8 20:20:00 Author:Ecco | Keyword: Memory , internal memory

Memory internal memory circuit diagram
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The Y-△ starting circuit 3 for motor without power switch

Published:2011/11/3 2:06:00 Author:Ecco | Keyword: Y-△ starting , motor , without power switch

The Y-△ starting circuit 3 for motor without power switch
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JJ2B-30 ~ 90 Variable voltage start-up circuit

Published:2011/12/7 2:08:00 Author:Ecco | Keyword: Variable voltage, start-up circuit

JJ2B-30 ~ 90 Variable voltage start-up circuit
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JJ28-11 ~ 22 Variable voltage start-up circuit

Published:2011/12/7 2:11:00 Author:Ecco | Keyword: Variable voltage , start-up

JJ28-11 ~ 22 Variable voltage start-up circuit
This starter is suitablefor 11 ~ 22kW motor.Because the current islarge,it uses three current transformers E to provide mutual inductance current. (View)