Facebook
Google
GitHub
LinkedinBlogs
Inductance tolerance
Standard inductance tolerances are typically designated by a tolerance letter, standard inductance tolerance letters include:
F:+/-1%
G:+/-2%
T:+/-3%
J:+/-5%
K:+/-10%
L:+/-15%
M:+/-20%
P:+/-25%
N:+/-30%
Test frequency
The frequency at which inductors are tested for either...
Inductance
The property of a circuit element which tends to oppose any change in the current flowing through it, the inductance for a given inductor is influenced by the core material, core shape and size, the turns count and shape of the coil,inductors most often have their inductances...
Inductor
A passive component designed to resist changes in current,inductors are often referred to as "AC Resistor",the ability to resist changes in current and the ability to store energy in its magnetic field,account for the bulk of the useful properties of inductors,current passing through an...
The CCP module is one of the most important modules in the PIC microcontroller. While being extremely important, it is not very difficult to use. Here I will show you how to use the compare section of the CCP (Compare, Capture, Pulse Width Modulation) module of the PIC16F877A. You can use this...
Hi all.
Thanks for taking the time to help me with the questions to produce the world's first Art of Electronics Answer Guide.
Yay!
I intend to post questions up here. Any which need a schematic or formulae from the book will have that too.
In order to avoid people doing the same...
In most cases where you want to control an AC load, a triac or SCRs will be used. However, it is not easy to drive a triac or SCR. The drive requirement for the triac or SCR makes it sometimes difficult to control it as we want. One thing is that we can not turn the triac or SCR on or off as...
I have finally built an FM transmitter.
Previsouly I have built an AM transmitter but it never worked right, only very short distance.
http://cappels.org/dproj/FMXMTR/fmxmtr.htm
The design is somehow finicky, and does not work like shown. Adjustable resistor for the 330 Ohms, and 1K Ohms are...
This blog entry was inspired by the following thread:
Forward Error Correction Identification
The basic gist is that the Original Poster (OP) had a cheap data module for an RF system that, for some reason, he couldn't disclose the make or model of and he didn't have the documentation on...
Here's one temperature sensor (thermometer) circuit that you can easily build. It uses the popular PIC 16F877A microcontroller. The temperature sensor is LM35. The LM35 outputs an analog voltage proportional to the temperature. The output from the LM35 is 0.1V/'C. So, when temperature sensed...
I have previously shown how to manually calculate the values for the sine table:
http://tahmidmc.blogspot.com/2011/01/generation-and-implementation-of-sine.html
You can use Smart Sine to automatically generate the sine table:
http://forum.allaboutcircuits.com/blog.php?b=508
I have also shown...
I have previously shown how to calculate the values for the sine table. Now I will show you how to use that sine table for generating a sine wave using a PIC16F684. Why PIC16F684? It is a nice little 14-pin PIC that contains all that is needed for SPWM (sinusoidal pulse width modulation) – the...
Here is the software Smart Sine, that I created and now use to generate sine tables. It is the improved and more developed version of the software I had previously created with a few more useful features. It is relatively simple to use and gives results quickly as opposed to manually...
I have actually built a display drive circuit, using 74hc595 serial buffers, and 5x digital MOSFETs.
Most of the electrical connections are now made. A 12 MHz crystal was added! There is very little space remaining on the board.
The 18f13k50 only has 8K memory (4096 program words). Normally...
Zero crossing detection is very important, especially in power control circuits employing thyristors.
I have come across many people struggling with zero crossing detection with PIC microcontroller and thus they cannot fire triacs or SCRs as required.
So, here I have explained a simple method...
I made this working a while ago, using source code included with the USB stack. However, in the meanwhile, I reinstalled Windows, and changed to MPLAB X.
I spent the whole morning trying to compile it using XC8.
Many different errors, and many problems with directories.
Finally I downloaded...
1. selection core:
We should be know below necessary information:
(a) Minimum Inductance based on DC basic, e.g. 1mH
(b) IDC current, e.g. 3A
According to formula LI*I= 1.0*3.0*3.0=9.0
We can find 60u which is in range from curve which is LI*I vs core part number, and find core
55586 is suitable...
I have built scrolling message more than a year ago, based on 16F1824, and assembler language. However it is not easy to maintain or to modify this program.
It is not possible (for me) to program scrolling message on the 16F57 (in assembler). I have done it in C language! About 80% of the...
Actually I have seen this many times on public forums. There is information that LED resistors must be used. Otherwise, the LEDs will simply burn out, as well the microcontroller will take damage.
I have found these informations to be largely untrue. Various explanation can be found among the...
