Wednesday, November 19, 2014

7Segment Display 74LS247

The displayor using a 7 segment display in electronic device applications is drain port of a microcontroller or data that would point in the show, especially when the data would be displayed more than 1 digit. necessary path to control the resources of each 7 segment and the path to input data on the 7 segment. Series Display 7 Segment 4 Digit Multiplex is a way to save the port or microcontroller data path that will be displayed. Series Display 7 Segment 4 Digit Multiplex uses BCD to 7 segment decoder 74LS247 BCD to encode data from the data that will be displayed, then for each resource viewer 7 segment using the set of transistors as electronic switches. Current flowing in the viewer in a series of 7 segment Display 7 Segment 4 Digit Multiplex is in limiting use yag resistor in series pairs in each collector transistor.
Image Series Display 7 Segment 4 Digit Multiplex




Configuration circuit components 7 Segment 4 Digit Display Multiplex
The legs LT, RBI, RBO in this circuit is not connected (logic high) is meant to display data from the seven segment according to data from the microcontroller. Resistors are mounted a series of LED is used as a barrier for current flow that flows through the LED does not exceed the maximum allowable current that is equal to 20 mA.
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What is Switchgear

Switchgear represents the set of joins and changes that are necessary to be able to turn down electrical powered devices. It is a valuable part of any electrical powered program because to be able to have a safe electrical powered program, you need an efficient switchgear build that allows you to place turn down the electrical powered devices in the event of an urgent situation.

Switchgear

Switchgear has been around for a while, and as a result, the present technological innovation is quite innovative compared to the unique switchgear techniques, which necessary a guide shut down. There are some circumstances in which a guide shut down is not recommended. In fact, in many circumstances it is at a minimal annoying to personally turn down the switchgear because the switchgear is placed in a distant location for protection.

The switchgear must be protected to be able to perform properly. In lesser techniques, this is obtained by having the switchgear in a fenced in in area exterior. This needs a large start air space and this will only work in small techniques. Because this is not easy for all techniques, however, there are several alternative insulation material options available.

For a while oil was a common insulator, but the risk provided by an oil leak, especially given the vicinity to electrical powered techniques has led to the constant move away from oil insulation material in switchgear technological innovation. Oil insulation material performs by capturing some vaporized oil through the electrical arc to put out it. Again, this strategy is efficient but is hardly ever integrated lately due to the risk of oil leaks.

One of the best insulation materials is gas, although it is expensive and therefore not appropriate for all circumstances. In this scenario, the routine buster uses attractive areas to expand the electrical powered arc and then the gas smashes the arc. You must use a specific insulation gas.

Another insulation strategy is machine insulation material. In this scenario, the machine insulation material quenches the electrical arc. This only performs in method present circumstances because there machine insulation material is not strong enough or constant enough to handle higher present circumstances. The electrical arc is compacted in this program as machine insulation material needs very little extending to be able to put out the present.

Another option is a compacted air protected program. In this program the air elongates the electrical powered arc until it is incapable to maintain itself and extinguishes itself. This is a simple program and efficient in many present preparations. This is obviously not at all the same as the start air program previously mentioned.

Switchgear is an important feature for any electrical powered program. Without an efficient switchgear scenario, the electrical powered program is dangerous and risky. Now that the switchgear technological innovation is able to work via handheld distant control, the protection of the scenario has been improved considerably.

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Simple Stabilizer Circuit Diagram

SimpleSimple Stabilizer Circuit Diagram

A aerial affection ability accumulation with a continuously capricious stabilised achievement adjustable at any amount amid 0 and 30VDC. The ambit additionally incorporates an cyberbanking achievement accepted limiter that finer controls the achievement accepted from a few milliamperes (2 mA) to the best achievement of three amperes that the ambit can deliver.

This affection makes this ability accumulation basal in the experimenters class as it is accessible to absolute the accepted to the archetypal best that a ambit beneath analysis may require, and ability it up then, after any abhorrence that it may be damaged if article goes wrong. There is additionally a beheld adumbration that the accepted limiter is in operation so that you can see at a glance that your ambit is beyond or not its preset limits.

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Radio Frequency Generator Schematic

Radio Frequency Generator (RFG) is a tool used to generate the RF frequency. In the experimental modulation technique Radio Frequency Generator (RFG) is used as a carrier signal generator (carrier). The series of Radio Frequency Generator (RFG) can generate frequencies from 150KHz - 12 MHz. The series of Radio Frequency Generator (RFG) has been equipped generator modulation signal (information signal) that can be used to adjust the position of switch SW2. The series of Radio Frequency Generator (RFG) is also equipped with output level control via potensio VR1 and the output impedance selector selector with SW1. The series of Radio Frequency Generator (RFG) is also equipped with selector selector frequency band consisting of 5 range. For more details can be seen from the picture series of Radio Frequency Generator (RFG) follows.

The series of Radio Frequency Generator (RFG) above has 5 frequency range 150 KHz - 500 KHz, 350 KHz - 1 MHz, 750 KHz - 2.25 MHz, 1.6 MHz - 5 MHz and 3.5 MHz - 12 MHz. Selection of frequency range tersbut done by adjusting the position of selector switch SW3. To adjust the working frequency Radio Frequency Generator (RFG) is done by adjusting the lever variable capacitor (Varco), C1 and C2 are connected parallel.
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Automatic Water Pump Controller Circuit

Automatic water pump controller is a series of functions to control the Automatic Water Pump Controller Circuit in a reservoir or water storage. As the water level sensor made with a metal plate mounted on the reservoir or water tank, with a sensor in the short to create the top level and a detection sensor for detecting long again made the lower level and ground lines connected to the bottom of reservoirs or reservoir. The series of automatic water pump controller is designed with 2 inputs NOR by 4 pieces and relay that is activated by the transistor. Automatic water pump circuit requires +12 VDC voltage source and can be used to control the water pump is connected to AC power . Here is the complete series of pictures.

Series Automatic Water Pump Controller 



List Component Automatic Water Pump Controller 
R1 = 15K 
R2 = 15K 
R3 = 10K 
R4 = 1K 
D1 = LED 
D2 = 1N4148 
Q1 = BC337 
IC1 = 4001 
SW = SPDT Switches 
Relay RL1 = 12V 

The working principle series of automatic water pump controller above is. At the time the water level is below both sensors, the output IC1C (pin 10) will be LOW, Kemudin when the water began to touch the lower level sensor, the output IC1C (pin10) remains LOW until the water touches the sensor level above, then the output IC1C (pin 10) going HIGH and active relay through Q1 and turn on the water pump to meguras reservoir. At the muli down and water level sensors for water untouched MKA IC1C output (pin 10) remains HIGH until the new water untouched semuasensor IC1C output (pin 10) LOW and water pump died. The series of automatic water pump controller is equipped with SW1 which serves to reverse the logic of drains (the output of IC1C) and the concept of water supplied (output dri IC1D). When SW1 is connected to IC1D the water pump will turn on when the water does not touch all the sensors and will die when all the sensors tesentuh water. Automatic water pump controller can be used to fill or drain the water according to which mode is selected via SW1.
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120W amplifier with LM12

This is power amplifier with basic amplifiy on IC LM12.

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Tuesday, November 18, 2014

Zero Crossing Detector

Zero Crossing Detector circuit is basically an application of a comparator. In the article series Zero Crossing Detector with Op Amp is built using a comparator of an Op Amp IC741/351. The process of detection of this comparator is mngamati 0Volt input signal crossing point by making reference value at comparator 0Volt. The output of the Zero Crossing Detector circuit with Op Amp is wave-shaped box that mengiterprestasikan teteksi result of the crossroads of 0 volt input signal.

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