Measuring and Test Circuit

Quick Cardiotachometer Circuit Diagram

Published:2011/6/9 4:13:00 Author:Vicky | Keyword: Quick Cardiotachometer,

Cardiotachometer and frequency meter in fact belong to one sort of measure instrument. The difference is that the time gate of cardiotachometer is 1min, but not 1s. As to one measure instrument, measuring time of 1 min is long and hard to guarantee the precision. Therefore, alternate measuring is necessary, which meets the requirement of quickness and precision.The aboved picture is cardiotachometer circuit, and it can match the requirement of quickness and precision.   (View)

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Digital Electronic Clock Calibrator Circuit Diagram

Published:2011/6/9 4:15:00 Author:Vicky | Keyword: Digital Electronic Clock Calibrator,

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Bicycle Speed Ometer Circuit Diagram

Published:2011/6/9 4:16:00 Author:Vicky | Keyword: Bicycle Speed Ometer,

Bicycle Speed Ometer   (View)

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Typical Applied Circuit of LM1203 Integrated Circuit

Published:2011/6/9 4:16:00 Author:Vicky | Keyword: LM1203 Integrated Circuit,

Typical applied circuit of video small-signal processing which is composed of LM1023 integrated circuit is shown as in the picture. Hint: If the character is lack of color, the raster is white after make it brighter, and if the signal wire, input circuit and output circuit are normal under such circumstance, then generally speaking, this failure is caused by the damage of LM1203.   (View)

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Analog Capacitance Admeasuring Device Circuit Diagram

Published:2011/6/9 4:23:00 Author:Vicky | Keyword: Analog Capacitance Admeasuring Device, CD4013

The picture is the circuit of analog capacitance admeasuring device. Use a double-D trigger, CD4013, and use one trigger of the double-Drigger, CD4013, together with a tested capacitance to constitute a monostable trigger to enable it to generate output pulse. The pulse width of this output pulse and the average current value is in proportion to the capacity of the tested capacitance. Use another one trigger of CD4013 to constitute a multivibrator to generate trigger pulse. A piece of IC can be used to constitute a simplified capacitance tester. The measurement range is l00pF～lμF.   (View)

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Digital Frequency Meter Circuit Diagram

Published:2011/6/9 4:17:00 Author:Vicky | Keyword: Digital Frequency Meter,

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Capacitance Identification Device Circuit Diagram

Published:2011/6/9 4:22:00 Author:Vicky | Keyword: Capacitance Identification Device,

Capacitance identification device is not used to measure the capacity of the capacitor, but to identify whether the capacitor is good or bad, and whether it can be used, that is, whether there is short circuit or circuit break in the capacitor. It provides quality guarantee for making the circuit and reduce the unnecessary troubles. The circuit composition as is shown in the picture. This device can identify capacitors whose capacity are from 1pF to 1μF 1.   (View)

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Electromagnetic Oscillation Demonstrator Circuit Diagram

Published:2011/6/9 4:26:00 Author:Vicky | Keyword: Electromagnetic Oscillation Demonstrator,

The picture is a circuit of electromagnetic oscillation demonstrator. It is displayed intuitively and visually in electromagnetic oscillation by the flow type pf luminous diode. The changing situation of galvanic current, magnetic field and electric field is also displayed in the procession of electromagnetic oscillation. Through coil current, it can display the change of circuit and magnetic field and the constitution of circuit, pulse drive circuit and work power supply.   (View)

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Counter-type Peak Hold Circuit Diagram

Published:2011/6/9 4:06:00 Author:Vicky | Keyword: Counter-type Peak Hold,

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Electronic Tuner Circuit Diagram

Published:2011/6/9 4:04:00 Author:Vicky | Keyword: Electronic Tuner,

Tuner is a commonly seen standard sound calibrator. The tuning fork is usually made of metal. Beat it by hand to make it give out audio signal of 440Hz, and calibrate it by comparing with the calibrated sound. Electronic tuner is a sound calibrator made of electronic component. Electronic tuner is easier and more accurate than metal tuning fork, and what’s more, it can work continuously. The circuit principle is as shown in the picture.   (View)

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Infrared Sphygmograph Circuit Diagram

Published:2011/6/9 4:09:00 Author:Vicky | Keyword: Infrared Sphygmograph Circuit,

The so-called infrared sphygmograph means that the sensor that it uses to collect the signals is infrared sensor. Circuit is as shown in the picture.   (View)

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Field Frequency Identification Unit Circuit Diagram

Published:2011/6/9 4:20:00 Author:Vicky | Keyword: Field Frequency Identification Unit,

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Three Digit Capacitance Circuit Diagram

Published:2011/6/9 4:29:00 Author:Vicky | Keyword: Three Digit Capacitance,

Three digit capacitance as shown in the picture is composed of basic pulse generator, gated circuit, control gate ,counter and decoding display. The compositionand relation ofthe measuring range of every capacitancerating :   (View)

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Bridge Rectifier Demonstrator Circuit Diagram

Published:2011/6/9 4:26:00 Author:Vicky | Keyword: Bridge Rectifier Demonstrator Circuit,

Bridge rectifier demonstrator circuit is a AC/DC conversion circuit. Bridge rectifier demonstrator circuit shown as in the picture reveals how the two groups of communication diode works in turn in the bridge rectifier circuit. It is made of pulse generator circuit, current direction control circuit, demonstrator circuit and power supply.   (View)

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Arbitrary Number Pulse Circuit Diagram

Published:2011/6/9 3:53:00 Author:Vicky | Keyword: Arbitrary Number Pulse,

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Digital Level Monitor Circuit Diagram

Published:2011/6/9 4:05:00 Author:Vicky | Keyword: Digital Level Monitor,

As is shown in the picture, digital level monitor can display the outgoing sound volume of sound amplifier by numbers. Because it adopts one digit display tube, the level it can display is from 1 to 9.   (View)

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Sixteen Channels Digital Display Auto-patrol Circuit Diagram

Published:2011/6/9 4:08:00 Author:Vicky | Keyword: Sixteen Channels Digital Display Auto-patrol,

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Ceramic Crystal Detector Circuit Diagram

Published:2011/6/9 4:08:00 Author:Vicky | Keyword: Ceramic Crystal Detector

Ceramic crystal is crystal-type oscillator component used by infrared remote control launcher. The spoilage rate is comparatively high , and it is usually difficult to judge whether it is good or not in repairing. The detector as shown in the picture can quickly determine whether good or bad, which provides great convenience for repairing. The ceramic crystal detector actually is a three digit explicit frequency indicator, and the unit is KHz.   (View)

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Reaction Capability Tester Circuit Diagram

Published:2011/6/9 4:00:00 Author:Vicky | Keyword: Reaction Capability Tester, CD4017

Reaction Capability Tester is used to test and train man’s quick-response capability. It has various type of construction and the Reaction Capability Tester as shown in the picture is composed of decimal counter CD4017 and luminous diode. The construction of Reaction Capability Tester is simple and can be used as a plaything to train and test children’s quick- response capability.   (View)

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Transistor Online Detector Circuit Diagram

Published:2011/6/9 4:07:00 Author:Vicky | Keyword: Transistor Online Detector

Transistor online detector can test whether the transistor is good or bad without disassembling the transistor. Its working principle is as shown in the picture. This detector can not only be used to test the transistor independently, but also test the transistor online; not only test the PNP-type transistor, but also NPN-type transistor. It is of a relatively high practical value.   (View)

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