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TCS230 color sensor is a converter IC to the frequency of light colors. There are two main components of this IC makers, namely photodioda and current to frequency converters. Each color can be drawn from the basic colors. To light, color is the color of the basic constituent Red, Green and Blue, or better known as RGB (Red-Green-Blue).

Photodiode on IC TCS230 array arranged in a 8x8 configuration: 16 Photodiode for red menfilter, 16 Photodiode for the green filter, 16 Photodiode for the blue color filter, and unfiltered Photodiode 16. Photodiode groups which will be used can be arranged through the leg selector S2 and S3.

Photodiode will issue the amount of current is proportional to the level of the basic colors of light that happened. This current is then converted into a signal box with a frequency proportional to the amount of current. Output frequency can be scaled by adjusting the leg selector S0 and S1.

Thus, programs that we need to get the RGB composition is a frequency counter program. There are two typical ways to calculate the frequency. The first way: We create a timer berperiode 1 second, and during that period we count how many times a wave box.

The resistance value of LDR (Light dependent resistor) will change with light intensity about it or around it. In dark conditions the resistance of approximately 200KΩ and LDR in bright Around 500Ω. LDR is made from semiconductor materials such as cadmium sulfide. With this material the energy of the light that falls cause more load to the electric current is released or increased. This means that the material resistance has decreased.

LDR can be easily tested by using a multimeter. because the resistance of an LDR varies according to the light falling on it. At bright light, the LDR resistance will be around 500Ohms and at darkness the resistance will be around 200K. For a proper diagnosis we need to measure the resistance of the LDR at bright light and at darkness.

When exposed to light

Keep the multimeter at Ohms mode. The LDR must be subjected to a bright light source (day light is enough).Connect the LDR leads to the multimeter terminals as shown in the figure. Now the multimeter will show a low resistance reading around 500 Ohms.

When dark

Keep the multimeter at Ohms mode. The LDR must be subjected to darkness by covering it with an opaque paper. Connect the LDR leads to the multimeter terminals as shown in the figure. Now the multimeter will show a high resistance reading around 200K.

Saturday, November 28, 2009

Browse » Home » menguji Komponen » Mengukur Kapasitor Menggunakan Multimeter (AVO Meter)

Mengukur Kapasitor Menggunakan Multimeter (AVO Meter)

Mengukur Kapasitor Menggunakan Multimeter (AVO Meter)

Capacitor is a component that can store electrical energy in units of Farad. Discovered by Michael Faraday (1791-1867). Capacitor is now also known as the "capacitor", but the word "condenser" is still used today.

Identified capacitor has two legs and two poles of positive and negative and has a liquid electrolyte and generally tubular. Coat condenser (having positive and negative poles) in the electronics scheme.

Whereas the other species most of the lower capacity values, do not have a positive or negative poles on foot, mostly flat, round brown, red, green and others such as tablets or buttons are often called capacitors (capacitor).

At the present time, ignition is often referred to as a capacitor or abbreviated with the letter (C).

The unit is the Farad condenser. where 1 Farad = 9 x 1011 cm ² surface area, which means these pieces to be equal to 1 Farad 106 mikroFarad (μF), a 1 μF = 9 x 105 cm ².

condenser units are widely used are:

* 1 Farad = 1,000,000 μF (micro Farad)

* 1 μF = 1,000,000 pF (pico Farad)

* 1 μF = 1000 nF (nano Farad)

* 1 nF = 1000 pF (pico Farad)

* 1 pF = 1000 μμF (micro-micro-Farad)

Step measurement:

1. Select Scale F or select parts of other true-to-scale.

2. then the reply value is the value appearing condenser capacity they will be with the unit or micro-Farad Farad (-6 rank 10) or Nano Farad (-9 rank 10) or Piko Farad (-12 rank 10) Farad.

In the diode consists of cathode and anode, and this is given one mark. Then the steps using a multimeter diode test is as follows:

1. Turn the switch on the Ohm, let R x 1K

2. Investigators Attach the red to the cathode (+) and black Investigators at the anode (-) diode

3. If the needle moves multimeter that is good, but if the needle does not move means diodes have been broken or damaged

4. Then a black investigator then attached to the cathode (+) and red pencolok attached to the anode (-). When the needle multimeter silent, means the diode is in good condition but if the move means that the diode has been leaked (damaged)

About Diode

A diode is the basic electronic component. It’s property is that it can conduct only in one direction. A diode can be made by joining a p type semiconductor and an n type semiconductor. At the junction point there will be a voltage drop due to the migration of carriers. The voltage at this barrier is known as barrier potential. Ideally the barrier potential is zero. But in practical case there will be a drop of 0.7 Volts.

When the P side of diode is connected to the positive of power supply and N region is connected to the negative of supply, the diode is said to be in forward biased condition. At this condition, if the applied voltage is greater than the barrier potential of the diode, it starts conduction. After the diode is arrived in the conduction mode, the drop across it remains at 0.7 V. After the conduction starts, if the voltage is increased further, current trough it increases linearly with voltage.

When the supply voltage is reversed the diode is said to be in reverse biased condition. Here there is no conduction at lower voltage values .If we increase the voltage value further ,it is observed that at a voltage the current sharply increases due to the breakdown of the P-N junction. This damages the device.

Hahahaaa,, sorry ini pertanyaan narsis. Udah lama banget gak buka Y!A, gak ada yang kenal. Salam kenal buat semuanya..... =)

Surabaya panas banget.... kulitku sekarang jadi terlihat item + tambah berminyak. Ada solusi gak? Terutama biar kulit jadi putih lagi.

1. Alat kedokteran apa yg temen2 inginkan?

2. Apa alat kedokteran saat ini yang perlu dikembangkan?

3. Penyakit apa yang sekiranya perlu ditangani menggunakan alat kedokteran namun saat ini alatnya belum ditemukan?

Makasih buat jawabannya. Jawaban kalian sangat penting untuk saya...

1. Alat kedokteran apa yg temen2 inginkan?

2. Apa alat kedokteran saat ini yang perlu dikembangkan?

3. Penyakit apa yang sekiranya perlu ditangani menggunakan alat kedokteran namun saat ini alatnya belum ditemukan?

Makasih buat jawabannya. Jawaban kalian sangat penting untuk saya....

1. Alat kedokteran apa yg temen2 inginkan?

2. Apa alat kedokteran saat ini yang perlu dikembangkan?

3. Penyakit apa yang sekiranya perlu ditangani menggunakan alat kedokteran namun saat ini alatnya belum ditemukan?

Makasih buat jawabannya. Jawaban kalian sangat penting untuk saya....

Mengapa titik pusat gravitasi setiap orang berbeda-beda?

Tolong beri referensinya juga...

Trimsss bgt! =)

Mana yang memiliki suhu lebih tinggi antara aksila (ketiak) dengan oral (mulut) ketika diukur dengan termometer? Mengapa?

Urutkan yang menurut kamu paling penting :

** Fisik (ganteng/cantik)

** Kekayaan

** Kepintaran

** Sifat