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Cheap precision digital clock timing circuit

Published:2014/5/13 20:49:00 Author:lynne | Keyword: Cheap precision digital clock timing circuit, CD4060

Cheap precision digital clock timing circuit
Cheap precision digital clock timing circuit shown as follow:   (View)

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Auto device circuit diagram

Published:2014/4/22 21:21:00 Author:lynne | Keyword: Auto device circuit diagram

Auto device circuit diagram
Auto device circuit diagram shown as follow:   (View)

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Cycle timer circuit diagram

Published:2014/4/22 21:22:00 Author:lynne | Keyword: Cycle timer circuit diagram

Cycle timer circuit diagram
Cycle timer circuit diagram as shown:   (View)

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The car alarm circuit diagram

Published:2014/4/22 21:24:00 Author:lynne | Keyword: The car alarm circuit diagram

The car alarm circuit diagram
The car alarm circuit diagram shown as follow:   (View)

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Lights Timing Flashing Circuit Diagram

Published:2014/4/16 20:45:00 Author:lynne | Keyword: Lights Timing Flashing Circuit Diagram, 2N5060, MPU131

Lights Timing Flashing Circuit Diagram
MPU131 thyristor is programmed with R1 and C1 class into relaxation oscillator circuit, the output control two-way thyristor 2N5060, thereby allowing low-voltage (2V) indicator lights timed flash.   (View)

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Timer switch circuit diagram

Published:2014/4/15 22:48:00 Author:lynne | Keyword: Timer switch circuit diagram, XR2242

Timer switch circuit diagram
Monolithic circuit shown in FIG time transmitter circuit XR2242, timing time from a few milliseconds to a few days. The circuit comprises a time base oscillator, a binary counter 8 and a control trigger. Time base circuit by the resistor R and the capacitor C form, can have T = RC (pin 8). T = 2RC (pin 2) and T = 128RC (pin 3) three output pulse time by the applied voltage, the output can be reset automatically, use the flip-flop positive edge of the input pulse time can start the process. circuit output terminal (pin 6) voltage UA is low, so that the external action relays and other components. 6 may also be connected to the foot end of the R or S, the electric set or reset (switch S2 together). using the switch S1 can select the delay time. Timer switch circuit diagram shown in Figure:   (View)

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A/D conversion and liquid crystal display driver schematic circuit diagram

Published:2014/4/14 21:55:00 Author:lynne | Keyword: A/D conversion and liquid crystal display driver schematic circuit diagram

A/D conversion and liquid crystal display driver schematic circuit diagram
A / D converter 7106 is a double integral type A / D converter. The converter of high precision, it comes with the decoder output can directly drive an LCD display. 7106 LCD monitor is designed as a range of 200mV voltmeter. Portable electronic portable scale range is skg, 5kg load cell output when about 4.6mV. The picture shows the A / D converter and LCD driver schematic.   (View)

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MC1488 circuit diagram

Published:2014/4/7 21:33:00 Author:lynne | Keyword: MC1488 circuit diagram, MC1488

MC1488 circuit diagram
MC1488 circuit board as shown:   (View)

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Light control switch circuit schematic

Published:2014/4/1 21:18:00 Author:lynne | Keyword: Light control switch circuit schematic

Light control switch circuit schematic
Using the sensor can be used for the power MOS FET power switch, the switch can be used photoresistor LDR. When light is irradiated onto the photosensitive resistor, LDR low resistance, a signal is applied to the gate of the field effect transistor off, the source and drain between conduction from the surface of the relay coil K changes state, for generating control signals, or, if connected to the photoresistor LDR at the low potential, in the dark when no light is irradiated onto the photosensitive resistor, with the photosensitive resistor. Light control switch circuit diagram shown in Fig.   (View)

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Infrared remote monitoring circuit schematic

Published:2014/4/1 21:17:00 Author:lynne | Keyword: Infrared remote monitoring circuit schematic

Infrared remote monitoring circuit schematic
Infrared remote monitoring circuit schematic shown as follow:   (View)

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Switch Timing Circuit Diagram

Published:2014/3/31 21:33:00 Author:lynne | Keyword: Switch Timing Circuit Diagram

Switch Timing Circuit Diagram
Switch Timing Circuit Diagram shown as follow:   (View)

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Light control relay circuit diagram

Published:2014/3/31 21:32:00 Author:lynne | Keyword: Light control relay circuit diagram

Light control relay circuit diagram
Light control relay circuit diagram as shown:   (View)

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Analog switch circuit schematic

Published:2014/3/31 21:31:00 Author:lynne | Keyword: Analog switch circuit schematic

Analog switch circuit schematic
Analog switch circuit schematic shown as follow:   (View)

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Loudspeaker overload protection circuit diagram

Published:2014/3/30 21:22:00 Author:lynne | Keyword: Loudspeaker overload protection circuit diagram

Loudspeaker overload protection circuit diagram
Loudspeaker overload protection circuit diagram shown as follow:   (View)

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Thyristor controlled motor reversing circuit diagram

Published:2014/3/30 21:07:00 Author:lynne | Keyword: Thyristor controlled motor reversing circuit diagram

Thyristor controlled motor reversing circuit diagram
Thyristor controlled motor reversing circuit diagram shown as follow:   (View)

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Fan controller circuit

Published:2014/3/26 21:44:00 Author:lynne | Keyword: Fan controller circuit

Fan controller circuit
Fan controller circuit shown as follow:   (View)

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Transistor bistable trigger circuit diagram

Published:2014/3/24 21:29:00 Author:lynne | Keyword: Transistor bistable trigger circuit diagram

Transistor bistable trigger circuit diagram
Transistor bistable trigger circuit diagram as shown:   (View)

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Blown fuse alarm circuit diagram

Published:2014/3/20 20:44:00 Author:lynne | Keyword: Blown fuse alarm circuit diagram, VT66A, 2CW52

Blown fuse alarm circuit diagram
With this alarm can quickly determine if the fuse blows .WorksFuse alarm circuit as shown. When the fuse Fu intact , Fu ends of the same potential , C1 voltage at both ends of days , the alarm does not work. When Fu blown fuse , 220V AC by the load ( ie, appliances ) input current limit by the Rl buck , VD2 rectifier , C1 filtering and VD1 regulated output DC voltage of about 3V . This DC voltage supply music IC VT66A work on piezoelectric ceramics B loud electronic music newspaper tube sound, alerting the master fuse has blown .Component selection and productionMusic IC available VT66A Music transistor should be used in L-shaped , with each song name within the reservoir favorite may be. VD1 with 2cw52 regulator diode , VD2 1N4004 type silicon rectifier diodes are available .R1 with RJ-1W metal film resistors. C1 with CD11-10v electrolytic capacitor . L color code available 2.5mH ​​inductor . B with FT-27, HTD27A-1 type and other piezoelectric ceramics .Entire alarm lines can be installed in a small plastic box , leads to two wires , it will be parallel to the ends of the fuse Fu .As shown in Figure blown fuse alarm circuit diagram:   (View)

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Dongfeng Peugeot Citroen Picasso 2.0L sedan speeding alarm buzzer circuit diagram

Published:2014/3/17 21:39:00 Author:lynne | Keyword: Dongfeng Peugeot Citroen Picasso 2.0L sedan speeding alarm buzzer circuit diagram,

Dongfeng Peugeot Citroen Picasso 2.0L sedan speeding alarm buzzer circuit diagram
Dongfeng Peugeot Citroen Picasso 2.0L sedan speeding alarm buzzer circuit diagram as shown:   (View)

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The doppler effect and double control automatic door light socket (RD627) circuit

Published:2014/3/13 23:03:00 Author:lynne | Keyword: The doppler effect and double control automatic door light socket (RD627) circuit, RD627

The doppler effect and double control automatic door light socket (RD627) circuit
The circuit shown in FIG. It consists of the Doppler effect sensor head, light control switch, one-shot, SCR control circuit, vocal music buck rectifier circuit and the AC circuit. When a vehicle or pedestrian approached the front door, security door will open automatically, but will be broadcast on a melodious song.   (View)

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