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Index 87

Car Multi-Function Alarm Circuit

Published:2011/7/26 10:32:00 Author:Robert | Keyword: Car, Multi-Function, Alarm

Car Multi-Function Alarm Circuit
Functional requirements: When the car has got one of the malfunctions which could be detected by the system and the system would have the voice prompt alarm.Voices: left-front wheel; right-front wheel; left-rear wheel; right-rear wheel; right-rear wheel; too low tire pressure; too high tire pressure; please change battery; ding-dong.Control ways: parallel mode.voices' corresponding address: (it is added a 200ms mute case between every voice's combination)00H ding-dong + left-front wheel + too high tire prssure.01H ding-dong + right-front wheel + too high tire prssure.02H ding-dong + left-rear wheel + too high tire prssure.03H ding-dong + right-rear wheel + too high tire prssure.04H ding-dong + left-front wheel + too low tire prssure.05H ding-dong + right-front wheel + too low tire prssure.06H ding-dong + left-rear wheel + too low tire prssure.07H ding-dong + right-rear wheel + too low tire prssure.08H ding-dong + left-front wheel + please change battery.09H ding-dong + right-front wheel + please change battery.0AH ding-dong + left-rear wheel + please change battery.0BH ding-dong + right-rear wheel + please change battery.The circuit's principle diagram is shown in the pictrue. (View)

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Contacting Two-Dimensional Tracking System Device Circuit

Published:2011/7/20 9:16:00 Author:Robert | Keyword: Contacting, Two-Dimensional, Tracking, System, Device

The picture shows the contacting two-dimensional tracking system device circuit. The part 1 is control box. The part 2 is sensor bracket. The part 3 is the sensor. The part 4 is workpiece. The part 5 is horizontal adjustable sliding board. The part 6 is hight adjustable sliding board. The part 7 is welding head. (View)

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Nokia 6110 circuit diagram 01

Published:2011/7/26 3:14:00 Author:Ecco | Keyword: Nokia

Nokia 6110 circuit diagram 01
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Nokia 6110 circuit diagram 02

Published:2011/7/26 3:14:00 Author:Ecco | Keyword: Nokia

Nokia 6110 circuit diagram 02
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Scale cleaner

Published:2011/7/26 3:11:00 Author:Ecco | Keyword: Scale cleaner

The scale cleaner circuit is composed of the power circuit, timer, multivibrator and control implementation circuit, and it is shown in Figure 3-211. Power supply circuit is composed of the power transformer T, bridge rectifier UR, filter capacitors Cl, C2, three-terminal integrated voltage regulator ICl, current limiting resistor Rl and power indicator LED VLl. The timer is composed of the time-base timer circuit IC IC2, start button S2, resistors R2, R3, capacitor C3, current limiting resistor R4 and LED VL2 and so on. Rl-R8 use the 1/4W or 1/8W carbon film resistors. (View)

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High-voltage Electrostatic Generator (the 2nd)

Published:2011/7/16 0:40:00 Author:Felicity | Keyword: High-voltage Electrostatic, Generator

High-voltage Electrostatic Generator (the 2nd)
Work of the circuit The circuit consists of oscillation step-up circuit and voltage doubler rectifier circuit. (It is showed in the picture 8-116.) Oscillation step-up circuit consists of Resistors Rl-R3, capacitor Cl-C3, thyristor VTl-VT3, diode VDl-VD6 and step-up transformer Tl-T3. Voltage doubler rectifier circuit consists of diode VD7-VDl6 and capacitors C4-Cl3. When the high-voltage generator is working, sparks are produced in the discharge gap (gap is adjustable). This can limit the outputting voltage. It can also indicate whether the outputting voltage is zero or not. (View)

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Electronic mosquito killer

Published:2011/7/24 22:38:00 Author:Ecco | Keyword: Electronic mosquito killer

The electronic mosquito killer circuit is composed of the energy-saving lamp circuit and high-voltage generator circuit, and the circuit is shown in Figure 3-196. Energy saving lamp circuit is composed of the rectifier diodes VDl-VD6, transistors Vl, V2, resistors Rl-R6, capacitors Cl-C6, pulse transformer T, choke L and black fluorescents ELl, EL2. The high-voltage generator circuit consists of resistors R7-RlO, capacitors C7-ClO, rectifier diodes VD7-VDl8 and high electrodes. Rl-RlO choose the 1/4W carbon film resistors or metal film resistors. Cl uses aluminum electrolytic capacitor with the voltage in 400V. (View)

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Auto-radio circuit diagram

Published:2011/7/22 1:29:00 Author:Ecco | Keyword: Auto-radio

Auto-radio circuit diagram
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Drinking fountain circuit diagram 03

Published:2011/7/22 1:22:00 Author:Ecco | Keyword: Drinking fountain

Drinking fountain circuit diagram 03
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A cell phone charger

Published:2011/7/22 1:14:00 Author:Ecco | Keyword: cell phone charger

A cell phone charger
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Drinking fountain circuit diagram 01

Published:2011/7/22 1:17:00 Author:Ecco | Keyword: Drinking fountain

Drinking fountain circuit diagram 01
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Drinking fountain circuit diagram 02

Published:2011/7/22 1:24:00 Author:Ecco | Keyword: Drinking fountain

Drinking fountain circuit diagram 02
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Automatic Recording Telephone Interface Circuit

Published:2011/7/13 7:57:00 Author:Michel | Keyword: Telephone Interface Circuit

The automatic recording telephone interface circuit is shown as above.This circuit has the functions of automatic answer and recording.It needs install small tape recorder and solid recording chip.)The circuit is simple and it's needless to open the telephone when static current is less than 20μA.IC1 is a photoelectric coupler.IC2 is a decimal count/distributor and when the fourth ring ends,⑩ feet outputs high level,riggering behind circuit.IC3 is voice circuits which records The honest is absent,please leave a brief message. Primary B uses Φ0.1mm enameled wire to circle 350 turns,the secondary level adopts Φ0.07mm enameled wire to circle 1000 turns. s (View)

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Teana A33-EL power door lock circuit

Published:2011/7/16 2:56:00 Author:leo | Keyword: Power door lock

Teana A33-EL power door lock circuit
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Xintai ZDP-78B computer-controlled horizontal electronic alexipharmic ark circuit diagram

Published:2011/5/13 1:03:00 Author:Ecco | Keyword: Xintai, computer-controlled , horizontal , electronic alexipharmic ark

Xintai ZDP-78B computer-controlled horizontal electronic alexipharmic ark circuit diagram
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Half four-bit LCD digital display voltmeter circuit

Published:2011/5/13 2:56:00 Author:Nicole | Keyword: LCD, voltmeter

This half four-bit LCD digital display voltmeter is composed of ICL7129 single chip CMOS IC, and with a matrix multichannel scanning(100Hz) LCD digit display device, it is suitable for producing high resolution pocket multimeter. it has the function of automatic zero adjustment and do not need a external connected zero adjustment capacitor, it only needs 9V power supply, the power consumption is 1mA, the transpositional speed is 2/s, the measuring range of direct input analog voltage is ±200mV, the highest resolution is 10μV, it also has the functions of identifying alarm and displaying with lower than 7.2V power voltage. It can use OR/UR terminal to achieve range automatically transforming, the CMRR is 11dB. (View)