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Elastic strain sensor produced by household electronic scales circuit diagram

Published:2014/4/14 21:50:00 Author:lynne | Keyword: Elastic strain sensor produced by household electronic scales circuit diagram

Elastic strain sensor produced by household electronic scales circuit diagram
This paper describes in electric scales, its basic principles and common spring scale similar to that of the spring is proportional to the weight of the object strain. However, it is structurally different from the ordinary spring balance, measurement instruction using electronic circuits. Electronics scale schematic is shown. (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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MT-700 voice Phychopsis circuit diagram

Published:2014/4/14 22:01:00 Author:lynne | Keyword: MT-700 voice Phychopsis circuit diagram

MT-700 voice Phychopsis circuit diagram
Voice UFO is a mechatronic device, which includes an electronic control circuit and mechanical operation of the device of two parts, mechanical parts working condition is controlled by an electronic circuit. Using voice and delay steering control DC motor control circuit. Circuit includes a total of three parts, from left to right: the sound signal receiving circuit electret microphone BM, etc.; transistor VT1, VT2 and R5, C3, etc. The delay control circuit; transistor VT3 ~ VT9 like the a motor drive circuit. When no sound signal, delay control circuit of two transistors VT1 end, VT2 conduction, output low, through the VT3, VT4, VT7, ultimately complementary driver transistor VT5, VT9 conduction, VT6, VT8 off, the motor M Forward, Voice UFO straight forward. R5, C3 is connected across the output of the delay control circuit (VT2 collector) to the input terminal (VT1 base), so that C3 is fully charged (the left and right being negative). When receiving the BM electret microphone sound signal, and outputs a positive pulse is coupled to the delay control circuit C2, VT1 conduction, VT2 off, the output from low to high, so that the drive tube VT5, VT9 off, VT6, VT8 conduction, motor M reversal, Voice UFO backwards. Voice UFO front wheel bracket designed as a special structure, making the front wheels automatically when reverse deflection angle, so voice flying saucer at the same time that their own turn backwards. Because of the delay before the network R5, C3 exists, the sound signal disappears, the delay control circuit outputs remain high for a few seconds, Voice UFO turned backwards a few seconds to recover straight forward. The main components and structural parts Some of the major components of electronic circuits, including: 9012-type PNP transistor, NPN transistor type 9013, 9014 type NPN transistor, electret microphone, capacitors, electrolytic capacitors, resistors, trimming potentiometers, power switch, and a printed circuit board, battery box, DC motors. The mechanical part of the main structure are: Body panels, tail panels, front wheel and front wheel bracket, rear and rear bracket, motor bracket, reduction gear set, transparent top cover and screws, nuts and so on. Debugging Mainly to adjust the voice sensitivity: the Voice UFO in the hand, mounted on two AA batteries, turn the power switch S, then UFO rear wheel should forward. Issue a voice password, and adjust trimmer potentiometer RP, so that voice sensitivity is moderate, UFO rear reliably can be reversed with a password. (View)

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Oscillator infrared transmitter circuit diagram

Published:2014/4/14 22:03:00 Author:lynne | Keyword: Oscillator infrared transmitter circuit diagram

Oscillator infrared transmitter circuit diagram shown as follow: (View)

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ND-0 Mounting Bracket Diagram

Published:2014/4/14 22:08:00 Author:lynne | Keyword: ND-0 Mounting Bracket Diagram

ND-0 Mounting Bracket Diagram
To facilitate the ND series when vibration sensing circuit to control the installation and use, especially for the design of ND-0 mounting bracket, it can give full play to the performance of the sensor, and simplifies installation difficulty, its shape and the holes shown in Figure, using the sensor 914 ND epoxy glue or bracket fixed on the plane, the two holes for the other side of the body to be detected together. (View)

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Use half adder and full adder of four additive operation circuit diagram

Published:2014/4/13 21:00:00 Author:lynne | Keyword: Use half adder and full adder of four additive operation circuit diagram

Use half adder and full adder of four additive operation circuit diagram shown as follow: (View)

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Full adder circuit diagram

Published:2014/4/13 21:03:00 Author:lynne | Keyword: Full adder circuit diagram

Full adder circuit diagram as shown: (View)

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Platinum thermal resistance practical amplification circuit diagram

Published:2014/4/13 21:10:00 Author:lynne | Keyword: Platinum thermal resistance practical amplification circuit diagram

Platinum thermal resistance practical amplification circuit diagram shown as follow: (View)

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Resistance strain type force sensor made of digital electronic circuit diagram

Published:2014/4/13 21:23:00 Author:lynne | Keyword: Resistance strain type force sensor made of digital electronic circuit diagram

Resistance strain type force sensor made of digital electronic circuit diagram
The working principle Digital electronic circuit principle as shown in figure, its main part is the resistance strain sensor R1 and IC2, consisting of the IC3 measurement amplifier circuit, and IC1 table and peripheral components of digital display panel. R1 sensor used on the ~ ZAA foil type resistance strain gauge, the normal value of 350 o. Measurement circuit will generate the resistance of the R1 variables should be converted into voltage signal output. The IC3 is the weak voltage signal is amplified and converted as A/D converter input analog voltage. IC4 provide l. 22 v voltage reference, it also the R5, R6 and RP2 after partial pressure for A/D converter reference voltage. 3-1/2 bits A/D converter ICL7126 reference voltage input end, introduced by contact among RP2, negative side is introduced by the middle of the RP3 contact. Reference voltage on both ends of nonlinear error of sensors suitable amount of compensation. Component selection1. IC1 choose ICL7126 integrated block; IC2, the IC3 choose high precision low temperature standard precision op-amp OP - 07; IC4 choose LM385-1.2 V integrated block. 2. RI sensor selection on - ZAA foil type resistance strain gauge, the normal value for 350 o,. 3. The resistance element appropriate chooses precision metal film resistors. 4. RPI choose precision potentiometer, more RP2, RP3 after debugging respectively replaced with precision metal film resistors. 5. Capacitor C1 use mica or ceramic dielectric capacitors. (View)

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The mechanical part of electronic circuitry circuit diagram

Published:2014/4/13 21:33:00 Author:lynne | Keyword: The mechanical part of electronic circuitry circuit diagram

The mechanical part of electronic circuitry circuit diagram
Electronic scale mechanical parts, as shown in the fixed on metal substrate 1 a guide pillar 2, position the club set on pillar 3, bushing bearing spring 7, and in the spring pressing sleeve cover on 5, on the pressing sleeve combined with a 4 cylinder, the plastic container liners placed with the base plate of 6. Sliding resistor in the bridge 8 (RP2) measured in turn 1, 9 on the base of the RP2 arm into the removable barrel hole. The height of the structure is associated with the sliding resistor of spring rigidity and selection, selection of spring principle is: when the maximum measured object weight, a spring compression relative sliding resistor RP2 slider stroke length of around 50-6 d %. To connect power supply automatically when measuring weight, on the base plate fixed a use electromagnetic relay contact reformed from a spring leaf slice of 10, and the distance between the protection of Jane for 0.5 LMM. Electronic circuits of electronic parts, except the sliding potentiometer RP Sally and indicating meter PAl, installed on the diagram shown in printed circuit board. (View)