Showing posts with label this. Show all posts
Showing posts with label this. Show all posts
Monday, December 16, 2013
This kind of cell phone jammer has the similar appearance to the cell phone
This kind of high-level cell phone jammer can be utilized to prevent the related personnel from using the cell phone or some other wireless signal devices like the wireless bug and so on.The size and weight of cell phone jammer should be listed in the product description
First, the subsidy model. According to the fine degree of screening the target population, develop different advertising costs. Advertising, accepting the ad gift bill, accept an advertising messages presented 1 to 2 cents a day, up to accept 10, unwilling to accept, you can reply to Close. Member model. Can be used for some businesses to provide services for members and potential clients, such as large supermarkets regularly to Member discount product information and promotional activities, and interactive activities. Industry solutions for supermarkets, appliance stores, clubs and other membership-based businesses to provide phone-based member services, such as supermarkets printing goods MMS, home appliances shopping malls buy concessions. Some high-level cell phone jammer can be used to detect or inspect almost all cell phone signals or almost all wireless signals.
The third is the custom mode. Advertising information in accordance with the classification of life, finance, real estate, catering, and forms of advertising evolve into the information class information, such as sports equipment sports enthusiasts SMS products made user voluntarily free custom. This mode of operation is to pay attention to the users to receive degrees, advertising information, improve customer receiving the degree, and gradually develop their habit of receiving an initial advertising content should be strictly controlled, the focus on developing a good reputation, practical product advertising, such as automotive, food and beverage entertainment, but also concerned about the scale and sophistication of the database, only the formation of large-scale users of analysis, in order to form a media advantage. Interactive mode. Create content, sub-categories of advertising database forwarding platform, the user registered as a member. At present, Guangdong Mobile, Shanghai Mobile has been around mobile media advertising, design E Armco "benefit" and other mobile media advertising brand, Shandong Mobile is launching a mobile media advertising planning and promotional efforts, you can learn from their experience, brand planning, but also do product line and brand packaging, and establish a mature product line, one by one to promote. cell phone jammer is through detecting and inspecting the cell phone signal emitted by the cell phone. This kind of cell phone jammer has the similar appearance to the cell phone.
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First, the subsidy model. According to the fine degree of screening the target population, develop different advertising costs. Advertising, accepting the ad gift bill, accept an advertising messages presented 1 to 2 cents a day, up to accept 10, unwilling to accept, you can reply to Close. Member model. Can be used for some businesses to provide services for members and potential clients, such as large supermarkets regularly to Member discount product information and promotional activities, and interactive activities. Industry solutions for supermarkets, appliance stores, clubs and other membership-based businesses to provide phone-based member services, such as supermarkets printing goods MMS, home appliances shopping malls buy concessions. Some high-level cell phone jammer can be used to detect or inspect almost all cell phone signals or almost all wireless signals.
The third is the custom mode. Advertising information in accordance with the classification of life, finance, real estate, catering, and forms of advertising evolve into the information class information, such as sports equipment sports enthusiasts SMS products made user voluntarily free custom. This mode of operation is to pay attention to the users to receive degrees, advertising information, improve customer receiving the degree, and gradually develop their habit of receiving an initial advertising content should be strictly controlled, the focus on developing a good reputation, practical product advertising, such as automotive, food and beverage entertainment, but also concerned about the scale and sophistication of the database, only the formation of large-scale users of analysis, in order to form a media advantage. Interactive mode. Create content, sub-categories of advertising database forwarding platform, the user registered as a member. At present, Guangdong Mobile, Shanghai Mobile has been around mobile media advertising, design E Armco "benefit" and other mobile media advertising brand, Shandong Mobile is launching a mobile media advertising planning and promotional efforts, you can learn from their experience, brand planning, but also do product line and brand packaging, and establish a mature product line, one by one to promote. cell phone jammer is through detecting and inspecting the cell phone signal emitted by the cell phone. This kind of cell phone jammer has the similar appearance to the cell phone.
Saturday, March 30, 2013
Make this Simple Tachometer Circuit
A tachometer is a device which is used for measuring vehicle engine RPM. Thus, it is basically used for checking the performance of the engine and helps an auto mechanic to understand the condition of the engine so that it can be corrected or optimized as per the desired specs.
Generally a tachometer may be considered an expensive equipments as these are highly accurate and intended for obtaining correct RPM rates of the concerned engine under test.
The conventional units are therefore very sophisticated and generate highly accurate results while testing.
However it doesnt mean that a simpler version cannot be built at home. With electronics at its best today, making a tachometer circuit at home isnt at all difficult. Whats more the results obtained from such circuits are fairly accurate and provides the required data for assessing the overall working condition of the system.
The circuit diagram shows a simple configuration utilizing the IC 555. The IC is basically configured as a monstable multivibrator.
The pulse is derived from the spark plug and fed to the end of R6.
The transistor responds to the pulses and conduct in accordance with triggers.
The transistor activates the monostable with every rising pulse of the input.
The monostable stays ON for a particular moment each time its triggered and generates an average ON time at the output which is directly proportional to the average trigger rate.
The capacitor and the resistor at the output of the IC integrate the result so that it can be directly read over a 10V FSD voltmeter.
The pot R3 should be adjusted such that the output generates the exact interpretations of the fed RPM rates.
The above setting up must be done with the help of a good conventional tachometer unit,
Parts List
Generally a tachometer may be considered an expensive equipments as these are highly accurate and intended for obtaining correct RPM rates of the concerned engine under test.
The conventional units are therefore very sophisticated and generate highly accurate results while testing.
However it doesnt mean that a simpler version cannot be built at home. With electronics at its best today, making a tachometer circuit at home isnt at all difficult. Whats more the results obtained from such circuits are fairly accurate and provides the required data for assessing the overall working condition of the system.
The circuit diagram shows a simple configuration utilizing the IC 555. The IC is basically configured as a monstable multivibrator.
The pulse is derived from the spark plug and fed to the end of R6.
The transistor responds to the pulses and conduct in accordance with triggers.
The transistor activates the monostable with every rising pulse of the input.
The monostable stays ON for a particular moment each time its triggered and generates an average ON time at the output which is directly proportional to the average trigger rate.
The capacitor and the resistor at the output of the IC integrate the result so that it can be directly read over a 10V FSD voltmeter.
The pot R3 should be adjusted such that the output generates the exact interpretations of the fed RPM rates.
The above setting up must be done with the help of a good conventional tachometer unit,
Parts List
R1 = 4K7
R2 = 47E
R3 = CAN BE VARIABLE 100K POT
R4 = 3K3,
R5 = 10K,
R6 = 1K,
R7 1K,
R8 = 10K,
R9 = 100K,
C1 = 47n,
C2 = 100n,
C3 = 100n,
C4 = 33uF/25V,
T1 = BC547
IC1 = 555,
M1 = 10V FSD meter,
D1,D2 = 1N4148
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