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www.Hobby-Electronics.info Electronics Course
Welcome to the world of Electronics
This course will take you to the magnificent world of electronics. Have you always wanted to be able to design your own electronics circuits? This is your chance!
We start with a few lessons about voltage, current en resistance. Next, we'll discuss power dissipation and capacitors, diodes and transistors.
We now have enough knowlegdge to build a simple power supply. And after a few lessons about differential amplifiers and operational amplifiers, we are even able to design and build a professional lab power supply. En after an extra lesson we can calculate the heatsink we need.
Next, we learn how to design a power amplifier.
After that, we will discuss inductors. And how to calculate decibels, often used in voltage and power ratios.
After building a Vocal Eliminator (a handy device allowing you to remove the vocals from a song), we will discuss different kinds of FET's and filters.
Next, we return to semi-conductors: DIAC's, SCR's and TRIAC's.
Since this course is far from finished, please visit it regurlarly for the latest update.
NEW! Many asked for it, and it's now finally available: the whole course in a PDF file. The layout might not be perfect, but it's better than nothing. This PDF file has been digitally signed.
You can also download the whole course (in HTML) as a single zip file. This zip file does NOT contain the PDF file.
START
Lastest updates:
25 January 2008:
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Lesson 5.2: Corrected miscalculation in the power dissipation of the diode. |
1 July 2007:
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No changes in the course itself, but in the PDF file. In the previous versions, images were quite big. This has been repaired. |
18 Febuary 2007:
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Lesson 3.2: Corrected error in calculating RMS value |
27 November 2005:
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Total redesign. Now written using DocBook. Allows me to easily create a web site and PDF file using the same source. |
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Lesson 11: Typo: RTHJ-A should be RTHJ-C. |
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Lesson 24: Typo in first line. |
3 July 2005:
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Lesson 9: In 9.4, added a resistor between opamp and transistor. |
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Several lessons. Changed contrast of the pictures. |
5 June 2005:
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Lesson 24: Automatic volume control. Updated values of C2 and R7. |
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Lessons 4 and 23. Updated. |
20 May 2005:
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Lesson 24: Automatic volume control. Updated. |
11 May 2005:
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Lesson 23: TV Deflection circuit. New lesson. |
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Lesson 24: Automatic volume control. New lesson. |
27 Febuary 2005:
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Lesson 10: Lab power supply. Added 2 extra resistors so you can safely power on the supply while FB+ and FBGND are still disconnected. |
20 Febuary 2005:
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Lesson 10: Lab power supply. Made some changes to prevent oscillation. |
8 Febuary 2005:
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Lesson 10: Lab power supply. Made some changes so the output voltage is *really* load-independant. |
29 January 2005:
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Lesson 4: Capacitors. Added section 4.3 Relation between voltage and current. |
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Lesson 13: Inductors. Added section 13.2 Relation between voltage and current. |
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Lesson 19: LC Filters. Added section 19.4 Resonance. |
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Various lessons: Corrected some grammatical errors. |
27 August 2004:
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Lesson 9: Operational Amplifier. Added section 9.4: Used as a current source. |
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Lesson 20: Miscellaneous filters. New lesson. |
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Lesson 21: Frequency-independant voltage devider. New lesson. |
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Lesson 22: DIACs, SCRs and TRIACs. New lesson. |
25 July 2004:
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Lesson 19: LC filters. New lesson. |
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Lesson 13: Inductors. Moved section 'Tuned circuit' to Lesson 19. Added section 'Quality factor'. |
26 June 2004:
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Lesson 4: Capacitors. Added a section about ESR. |
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Lesson 7: DC Power Supply. Added a section about ESR in the intermezzo on calculating the capacitance of the buffer capacitor. |
12 June 2004:
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Lesson 4: Capacitors. Added a section about phase shift. Also corrected some in filter calculations. |
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Lesson 13: Inductors. Corrected some errors in filter calculations (forgot the phase shift). |
5 June 2004:
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Lesson 17: JFETs. Made a few changes. |
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Lesson 18: MOSFETs. Made a few changes. Extended section 18.2. |
21 April 2004:
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Lesson 6: Transistors. Corrected an error in section 6.3. |
17 April 2004:
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Lesson 6: Transistors. Added intermezzo about thermal stability. |
21 March 2004:
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Lesson 18: MOSFETs. New lesson. |
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Lesson 2: Current and Resistors. Added interesting link. |
17 March 2004:
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Lesson 15: Vocal eliminator. The inverting and non-inverting inputs of a few opamps had been swapped. Schematic and PCB have been updated. |
15 Febuary 2004:
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Lesson 7: DC Power Supply. Added some extra tips an warnings. |
15 November 2003:
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Lesson 17: JFETs. Inside a JFET. |
10 November 2003:
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Measuring voltage, current, resistance, diodes and transistors using a multimeter |
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Inside a diode and transistor |
If you have any comments about the contents or about my writing, please drop a message.
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