Almost all resistors pinned with a power rating of up to 1 watt are marked with color bands. On every pinned through hole resistor, there are colored bands which denote the value of resistance in the resistor. To overcome this, resistor color coding is introduced. There are various values of resistors available from some ohms to millions of ohms.
#33K OHM RESISTOR COLOR CODE CODE#
Care to Comment? Cancel reply Enter your comment hereResistor color code indicates that a series of colored bands are painted on the resistor and most of the manufacturers identify their resistance value by means of a color code. Like this: Like Loading Comments 3 1 by Brian on April 1, - pm Thank you for explaining this. Sign me up! Real-world insights into process measurement and analytical applications, technology, and instrumentation. Want to learn all the stuff they left out of technology classes or forgot to put in the instrument manuals? Subscribe to my blog, and whenever I add a post, you'll get an e-mail notification. You are commenting using your Facebook account. You are commenting using your Twitter account. You are commenting using your Google account.
For instance, a resistor with alligator clips like the photo above cannot be clipped across a couple points that are already connected by a wire. The ohm resistance MUST be inserted in series in the loop. That lack of an explanation of why the resistor is necessary bothered me and made it harder to remember where the resistor needed to be. My instrumentation instructor, who was an instrument technician for many years, said that a Ohm resistor in series with the power supply was necessary but never explained why. You can leave a responseor trackback from your own site. You can follow any responses to this entry through RSS 2. If a HART communicator or HART modem fails to establish communications, it is advisable to insert a ohm resistor in series in the loop or use the banana plug adapter with a communicator. Connect a ohm resistor with alligator clips, like this one, to a wiring terminal and a loose wire in a loop circuit to test HART communications at the benchtop. The resistor need not be a precision resistor. The internal resistance of a DC power supply is insufficient to develop a HART voltage drop, and its filter capacitors act as a low pass filter to squelch the relatively high frequency baud HART signal. Why is that? The current signal becomes a voltage drop when the current passes through a resistor Ohms Law.
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