i'm working on a design project right now to create a voltage
controlled oscillator using only opamps and discrete components. I'm
able to create a square and triangle waveform easily and i've found
many methods to create a sine waveform such as piecewise breakpoint and
jfet amplifer from the triangle wave.
However, I'm having trouble finding information about a voltage to
frequency interface so that i can vary the frequency of the waveforms
using a DC voltage. There needs to be two ranges of voltages from
0.1-0.5V which control the frequency with 200hz/V and 1khz/V (user
selectable from one of the two).
Any help is appreciated. thanks.
controlled oscillator using only opamps and discrete components. I'm
able to create a square and triangle waveform easily and i've found
many methods to create a sine waveform such as piecewise breakpoint and
jfet amplifer from the triangle wave.
However, I'm having trouble finding information about a voltage to
frequency interface so that i can vary the frequency of the waveforms
using a DC voltage. There needs to be two ranges of voltages from
0.1-0.5V which control the frequency with 200hz/V and 1khz/V (user
selectable from one of the two).
Any help is appreciated. thanks.