whatever125
Newbie level 4
Here is my current schematic for my VCO. I need a 10 MHz range from 0 to 5 V but I can't figure out how to get that. It needs to work from 48 MHz to 58 MHz. Ignore the filter for now.
I got rid of the trim cap and increased C7 to 100 pF and decreased C6 to 30 pF and nothing works. It oscillates fine at around 29 MHz but as I decrease C1 so the frequency goes up it doesn't oscillate. I noticed that it stops oscillating at 1 uH.
I got rid of the trim cap and increased C7 to 100 pF and decreased C6 to 30 pF and nothing works. It oscillates fine at around 29 MHz but as I decrease C1 so the frequency goes up it doesn't oscillate. I noticed that it stops oscillating at 1 uH.