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paper_bits:pb109_vcoii [2017/06/29 15:51] 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's based on the [[http://ww1.microchip.com/downloads/en/DeviceDoc/21733j.pdf|MCP6002]].\\ | ||
| + | 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 potentiometer to a symmetrically wave.\\ | ||
| + | |||
| + | {{: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.\\ | ||
| ---- | ---- | ||
| ==== Schematic ==== | ==== Schematic ==== | ||
| + | {{:paper_bits:pb109_vcoii_schematic.jpg?600|}}\\ | ||
| ---- | ---- | ||
| ====Paper PCB==== | ====Paper PCB==== | ||
| + | **v2.0**\\ | ||
| + | {{:paper_bits:pb109_sine_vco_ii_20.jpg?400|}}\\ | ||
| + | {{ :paper_bits:pb109_sine_vco_ii_20.zip |}}\\ | ||
| ---- | ---- | ||
| ==== Parts ==== | ==== Parts ==== | ||
| * **Resistors:** | * **Resistors:** | ||
| + | * 2x 220 Ohm | ||
| + | * 2x 470 Ohm | ||
| + | * 2x 910 Ohm | ||
| * 1x 1 kOhm | * 1x 1 kOhm | ||
| - | * 1x 4.7 kOhm | + | * 1x 3.9 kOhm |
| - | * 4x 10 kOhm | + | * 3x 4.7 kOhm |
| - | * 10x 47 kOhm | + | * 1x 8.2 kOhm |
| - | * 4x 100 kOhm | + | * 3x 10 kOhm |
| + | * 4x 51 kOhm | ||
| + | * 2x 100 kOhm | ||
| * **Capacitors:** | * **Capacitors:** | ||
| - | * 1x 22 nF | + | * 1x 3.3 nF |
| - | * 1x 10 nF | + | * 1x 100 pF |
| - | * 2x 10µF | + | * 2x 100 µF |
| * **Diodes:** | * **Diodes:** | ||
| - | * 1x 1N4148 | + | * 1x BAT43 |
| * **Semiconductors** | * **Semiconductors** | ||
| * 3x BC547 transistor | * 3x BC547 transistor | ||
| Line 31: | Line 44: | ||
| * **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 header, female 90° 1x2 |
| - | * 4x jumpers | + | * 1x pin header, male 90° 1x3 |
| - | * 3x mini switch | + | * 1x pin header, male 90° 1x2 |
| + | * 3x jumpers | ||
| + | * 2x mini switch | ||
| * **Potentiometers:** | * **Potentiometers:** | ||
| - | * | + | * 1x 500 Ohm Trimmer |
| + | * 1x 10 kOhm | ||
| + | * 1x 50 kOhm | ||
| ---- | ---- | ||
| - | ~~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]]\\ | ||
| ---- | ---- | ||
| + | ==== 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> | ||
| + | |||
| + | ---- | ||