Diagram For Schematic

Greate schematic and circuit diagram data center ★★ Circuit with clear schematics for electronic learning and education

Greate schematic and circuit diagram data center ★★ Circuit with clear schematics for electronic learning and education

If you are interested in learning the code by memory, try the steps below to help you 'Learn the Color-code'.

Make sure you add the number to the color, like: 0 is black, 1 is brown, 2 is red, etc. etc.

Do not proceed to step

Can you

The color 'Gold' is not featured in the above table. If the 3rd band is gold it means multiplying by 0.1. Example, 1.2 ohm @ 5% would be brown-red-gold-gold. 12 multiplied by 0.1 gives 1.2 Don't get confused by gold as a resistance or a tolerance value. Just watch the location/posistion of the band.

Colors I used for 'Gold, Orange, Gray, and Silver'

1st band, denominator: Brown (1) 2nd band, denominator: Black (0) 3rd band, how many zeros (1) 4th band, tolerance in %: gold (5) Answer: 1 0 1 = 100 ohm, 5% tolerance

1st band: _____ 2nd band: _____ 3rd band: _____ 4th band, tolerance in %: _____ Answer: ___________________

1st band: _____ 2nd band: _____ 3rd band: _____ 4th band, tolerance in %: _____ Answer: ___________________

1st band: _____ 2nd band: _____ 3rd band: _____ 4th band, tolerance in %: _____ Answer: ___________________

1st band: brown (1) 2nd band: black (0) 3rd band: gold (0.1) 4th band, tol. in %: red (1-0-0.1 = 1 ohm, 2%)

1st band: 2nd band: 3rd band: 4th band, tolerance in %: Answer: ___________________

1st band: 2nd band: 3rd band: 4th band, tolerance in %: Answer: ___________________

1st band: brown (1) 2nd band: white (9) 3rd band: yellow (4) 4th band: brown (0) 5th band, tol.in %: brown (1940 ohm = 1.94K, Precision type.)

1st band: 2nd band: 3rd band: 4th band: 5th band, tolerance in %: Answer: ___________________

To get familiarized with abreviations in values, I used below 4700 or 4K7, 1000 or 1K, which is all the same. Every thousand (1000) is called a 'K' which stands for 'Kilo'. The 'M' stands for 'Mega' (million). 1 Mega is 1000K or 1000 000 ohms. So 4K7 means 4 thousand and 7 hundred or 4700 ohms. 6K8 means 6 thousand and 8 hundred or 6800 ohm. One more example, 1M2 means 1million and 200.000 or 1.200000 ohms. Here are a couple more: 1K92=1.92K=1920 ohms, 100E=100 ohms, 19K3=19.3K=19300 ohms, 1M8=1.8M, etc., etc. These abreviations you find everywhere in the industry, schematics, diagrams and whatever. It is normal and takes a bit of time to get used to.

This should get you started. If it looks difficult to you, don't worry. It is easy. Whenever you have a spare moment practise the color code in your head. It's like learning to ride a bicycle, once you know how to do it you never forget. I, and many others who learned electronics in the 60's and up to the 80's, were taught a little sentence to remember the sequence of the resistor colors like Black, Brown, Red, Orange, Yellow, Green, Blue, Violet, Gray, and White, which refers to: "4700 ohm, 5% = yellow violet red, gold 100 ohm, 2% = brown black brown, red 1000 ohm, 5% = brown black red, gold 22 ohm, 1% = red red black, brown150 ohm, 5% = ________________________ 270 ohm, 5% = ________________________ 3300 ohm, 5% = ________________________ 10 ohm, 1% = ________________________ 470 ohm, 2% = ________________________ 6800 ohm, 10% = ________________________ 3K3, 5% = ________________________ 1K, 5% = ________________________ 150 ohm, 1% = ________________________ 2M9, 10% = ________________________ 10M, 10% = ________________________ 1 Mega Ohm, 5% = ________________________ 1 ohm, 1% = ________________________ 3M9, 20% = ________________________ 1200 ohm, 5% = ________________________ 1K2, 5% = ________________________ 220 ohm, 1% = ________________________ 3300 ohm, 2% = ________________________ 47 ohm, 5% = ________________________ 390 ohm, 5% = ________________________ 3900 ohm, 2% = ________________________ 100.000 ohm, 5% = ________________________ 10K, 5% = ________________________ 10.000 ohm, 5% = ________________________ 1500 ohm, 2% = ________________________ 56K, 5% = ________________________ 1M, 10% = ________________________ 470K, 1% = ________________________ 1.8 ohm, 2% = ________________________ 2.2 ohm, 1% = ________________________ 2K76, 1% = ________________________ 94.1K, 2% = ________________________

Good luck my friends!

What exactly is rho you ask? Ohm's Law is not a fundamental law like Newton's Laws or the laws of thermodynamics, but an empirical description of a property shared by many electrical materials. This property of electrical materials is called conductivity. The inverse of that is called

This is also called the reciprocal. B is the reciprocal of A, so that A*B = 1.

The relationship between conductivity and resistivity is: conductivity = 1/resistivity

Resistivity, represented by the greek letter

In plain English words, resistance, R, is the ratio of the length (L) of the conductor wire divided by the constant conductivity (the greek sigma ) and by the cross sectional area (A). This formula is used to calculate how much resistance will be present in a wire conductor. You will find that it is important to reduce the resistance in the conductors in circuits. This is because resistance generates heat, and, for many circuits, heat is not desireable. So this formula shows us that one way to do this is to keep the length of conductors to a minimum. That also saves money. Reducing the length of conductors in a circuit will reduce the heat radiated which will keep nearby electronics components from overheating [thus helping them to last longer] and reduce power requirements [== save a little money over time]. Wow! All that information is derived from that one little formula. Formulas are powerful tools.

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