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paper_bits:pb109_vcoii [2020/07/14 12:13] admin [Paper PCB] |
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 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.\\ | + | 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.\\ | 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.\\ | ||