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paper_bits:pb109_vcoii [2017/09/13 23:53]
admin [Parts]
paper_bits:pb109_vcoii [2020/07/16 18:19] (current)
admin
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 ===== PB109 VCO II ===== ===== PB109 VCO II =====
  
-An other voltage controlled oscillator. It comes with a really ​beautifull ​shaped ​sinewave ​stabel ​and with the same peak to peak over all frequencies. One can switch between square, triangle and sine wave. In the square/​triangle mode one can change with a potentiometer from triangle to saw or the duty cycle of the square wave. In sine wave mode one can shape the sine wave to an interesting "sea saw" wave.\\ +This is the main voltage controlled oscillator ​due to its really ​beautiful ​shaped ​sine wave it is stable ​and with the same peak to peak over all frequencies. One can switch between square, triangle and sine wave. In the square/​triangle mode one can change with a potentiometer from triangle to sawtooth wave or change ​the duty cycle of the square wave. In sine wave mode one can shape the sine wave to an interesting "sea saw" wave.\\ 
-All OpAmps are the rail to rail [[http://​ww1.microchip.com/​downloads/​en/​DeviceDoc/​21733j.pdf|MCP6002]] ICs. For a perfect sine wave one should trim the 500R trim potentimeter ​to a symetrically ​wave.\\+All OpAmps are the rail to rail [[http://​ww1.microchip.com/​downloads/​en/​DeviceDoc/​21733j.pdf|MCP6002]] ICs. For a perfect sine wave one should trim the 500R trim potentiometer ​to a symmetrically ​wave.\\
  
 {{:​paper_bits:​pb109_vcoii_4016.jpg|}}\\ {{:​paper_bits:​pb109_vcoii_4016.jpg|}}\\
 +
 +The oscillation circuit is the same like the [[paper_bits:​pb101_syncvco|PB101 Sync VCO]].\\
 +The shaping from a triangle wave to a sine wave is made with a similar circuit like it's described in:   
 +[[https://​wiki.analog.com/​university/​courses/​electronics/​electronics-lab-12sg|Lab Activity: Generating sine waves from triangle waves]] by Analog Devices.\\
  
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 ====Paper PCB==== ====Paper PCB====
-{{:​paper_bits:​pb109_sine_vco_iii_11.jpg?​400|}}\\ +**v2.0**\\ 
-{{ :​paper_bits:​pb109_sine_vco_ii_11.zip |}}\\+{{:​paper_bits:​pb109_sine_vco_ii_20.jpg?​400|}}\\ 
 +{{ :​paper_bits:​pb109_sine_vco_ii_20.zip |}}\\
  
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 ==== Parts ==== ==== Parts ====
   * **Resistors:​**   * **Resistors:​**
-  * 1x 15 Ohm 
   * 2x 220 Ohm   * 2x 220 Ohm
   * 2x 470 Ohm   * 2x 470 Ohm
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   * 1x 1 kOhm   * 1x 1 kOhm
   * 1x 3.9 kOhm   * 1x 3.9 kOhm
-  * 4x 4.7 kOhm+  * 3x 4.7 kOhm
   * 1x 8.2 kOhm   * 1x 8.2 kOhm
   * 3x 10 kOhm   * 3x 10 kOhm
-  * 3x 51 kOhm+  * 4x 51 kOhm
   * 2x 100 kOhm   * 2x 100 kOhm
   * **Capacitors:​**   * **Capacitors:​**
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   * 2x 100 µF   * 2x 100 µF
   * **Diodes:**   * **Diodes:**
-  * 1x 1N4148+  * 1x BAT43
   * **Semiconductors**   * **Semiconductors**
   * 3x BC547 transistor   * 3x BC547 transistor
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   * **Mechanical:​**   * **Mechanical:​**
   * 2x IC socket, 8pins   * 2x IC socket, 8pins
-  * 1x pin strip 1x14 +  * 1x pin strip 1x10 
-  * 2x pin header, female 90° 1x3, 1x2 +  * 1x pin header, female 90° 1x3 
-  * 2x pin header, male 90° 1x3, 1x2 +  * 1x pin headerfemale 90° 1x2 
-  * 4x jumpers+  * 1x pin header, male 90° 1x3 
 +  * 1x pin headermale 90° 1x2 
 +  * 3x jumpers
   * 2x mini switch   * 2x mini switch
   * **Potentiometers:​**   * **Potentiometers:​**
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-~~socialite:icon facebook twitter googleplus reddit tumblr~~+==== Links ==== 
 + 
 +[[https://​wiki.analog.com/​university/​courses/​electronics/​electronics-lab-12sg]]\\ 
 +[[https://​en.wikipedia.org/​wiki/​Hyperbolic_function]]\\
  
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 +==== License ====
 +The PB109 VCO II was designed by **Wolfgang Spahn** 2017-20.\\
 +It is licensed under a [[http://​creativecommons.org/​licenses/​by-nc-sa/​4.0/"​|Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License]].
  
 +<​html>​
 +<a rel="​license"​ href="​http://​creativecommons.org/​licenses/​by-nc-sa/​4.0/"><​img alt="​Creative Commons License"​ style="​border-width:​0"​ src="​https://​i.creativecommons.org/​l/​by-nc-sa/​4.0/​88x31.png"​ /></​a> ​
 +</​html>​
 +
 +----