Circuit Diagram

Led lamps controller 2

Published:2011/4/7 2:23:00 Author:Ecco | Keyword: Led lamps controller

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Motor control circuit diagram braked by three-phase half-wave rectifier

Published:2011/4/10 20:42:00 Author:Ecco | Keyword: Motor control , brakinged , three-phase, half-wave, rectifier

It's motor control circuit braked by three-phase half-wave rectifier, when the AC contactor IC disconnects with the power, 2C, SJ time relays take action immediately, 2X main contact short connects with three winding lead wires of motor and then connects with Three-phase half wave rectifying power supply, then stator windingof motor is connected to parallel symmetrical line of which one end connects to null line. That is to achieve the purpose of braking, and then SJ delayed discinnects, 2C loses electric and releases, the braking ends. The braking lines is suitable for motor star connection, it has the advantages of small volume, low cost and simple lines, but also for larger capacity motor. It's shown as the chart:   (View)

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Led lamps controller 1

Published:2011/4/7 2:22:00 Author:Ecco | Keyword: Led lamps controller

The LED festival character display lights controller can display four sentences and four words composing of many LEDs(such as celebrating May Day and long live our motherland ), and they display in time sequence to add festive atmosphere to festive night. Working principle: The LED festival lights controller circuit is composed of power supply circuit, pulse generator, control circuit and LED display circuit. It's shown as the chart of 1-165. Power supply circuit consists of step-down capacitor Cl, discharge resistors Rl, rectifier diodes VDl, VD2, Zener diode VS and filter capacitor C2. The pulse generator is composed of integrated circuit ICl, resistors R2, R3 and capacitors C3, C4. Control circuit consists of decimal counting / pulse divider integrated circuit IC2, diodes VD3, resistors R4-R8, capacitor C5 and thyristor VTl-VW.   (View)

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engine oil pressure switch、water temperature sensor、braking smoke and air condition system circuit diagram

Published:2011/4/10 20:39:00 Author:muriel | Keyword: engine oil pressure switch, water temperature sensor, braking smoke , air condition system

Figure engine oil pressure switch、water temperature sensor、braking smoke and air condition system circuit diagram   (View)

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Automatic water level control circuit diagram of draining tank

Published:2011/4/7 21:20:00 Author:Ecco | Keyword: Automatic , water level control, draining tank

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Automatically detecting the battery voltage indicator circuit diagram

Published:2011/4/7 21:11:00 Author:Ecco | Keyword: Automatically detecting, battery voltage indicator

the battery voltage indicator This simple circuit can detect the battery voltage. When the voltage is lower than the preset voltage set by the variable resistor VR1, LED will light up, in fact, related resistance and VR1 will be bias maintain Q2 (OFF) of Q1(ON), so that the LED is OFF. When the battery voltage is gradually reduced to below the preset voltage, Q1 becomes OFF, Q2 becomes ON, the LED lights up. This circuit can work under the 12V battery. You can first use a variable power supply, adjust the the low-voltage you want, connect to the circuit, adjust VR1 to critical value of beginning to light or dark.   (View)

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Air-condition front and back control assembly and ambient temperature control circuit diagram

Published:2011/4/10 20:25:00 Author:muriel | Keyword: Air-condition front and back control assembly, ambient temperature control

Figure Air-condition front and back control assembly and ambient temperature control circuit diagram   (View)

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The school bell timing circuit diagram

Published:2011/4/10 20:20:00 Author:Ecco | Keyword: school bell timing

General school bell is pulled by the people, but it is difficult to control the tone time. It can solve this problem by installing a timer to control ring. Working principle is shown in Figure 213: To press the button QA when pulling the bell, the time relay SJ pulls, bell ring tone is also energized, to release the button QA, as the SJ pulls, SJ normally open point is self-hold until time relay seting time(time relay could adjust to 1 minute or according to the choice), the delay normally closed point is cut off and make time relay loses electric and releases, SJ normally open point is cut off, the tone will stop.   (View)

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Buick horn circuit (standard configuration)

Published:2011/4/8 2:47:00 Author:Jessie | Keyword: horn

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TF903 Super remote antenna amplifier circuit

Published:2011/4/8 4:42:00 Author:Jessie | Keyword: antenna amplifier

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Buick dashboards circuit (instrument, ub3)

Published:2011/4/8 4:43:00 Author:Jessie | Keyword: dashboard

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Aishi S903 antennas amplifier circuit

Published:2011/4/8 4:44:00 Author:Jessie | Keyword: antennas amplifier

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Nickel-cadmium battery low voltage indication circuit diagram of remote control helicopter

Published:2011/4/7 20:43:00 Author:Ecco | Keyword: Nickel-cadmium battery , low voltage indication , remote control helicopter

5.2V Nickel-cadmium battery low voltage indication 2 of remote control helicopter In the circuit, when the battery voltage is lower than the preset value, the bright indication can be used as detecting low voltage (use high brightness and large LED), since the original design is used in remote control helicopter, so you can choose a a specific color LED which could be watched in the day, the cutting off point is adjusted by the variable resistor P1 of which resistance is between 4.2 to 5.2V, the selection of parts is according to your choice, but proposed to be located between 4.6 to 4.8V. The design can also be used in other applications. According to the original design, when the LED is lit, the current is about 12mA, while the standby current is about 2mA.   (View)

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Buick remote control lock circuit diagram

Published:2011/4/8 2:51:00 Author:Jessie | Keyword: remote control lock

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Hartley oscillating diagram

Published:2011/4/7 22:22:00 Author:Jessie | Keyword: Hartley oscillating

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Series resonance circuit diagram

Published:2011/4/7 22:16:00 Author:Jessie | Keyword: Series resonance

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Magnetic pendulum oscillation circuit diagram

Published:2011/4/7 22:15:00 Author:Jessie | Keyword: Magnetic pendulum, oscillation

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Single pipe transformer oscillating circuit diagram

Published:2011/4/7 22:07:00 Author:Jessie | Keyword: Single pipe, transformer, oscillating

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Field effect transistor low-voltage oscillating circuit diagram

Published:2011/4/8 2:45:00 Author:Jessie | Keyword: Field effect transistor, low-voltage oscillating

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The battery voltage protection indicating circuit diagram

Published:2011/4/7 22:14:00 Author:Ecco | Keyword: battery voltage, protection indicating

Power, low battery indication In the following circuit when the battery is OK, it indicates the green LED, the LED is the power indicator during operation. When the battery voltage is lower than the default, the red LED light will light up.   (View)

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