Transconductance amp gives oscillator reciprocal
response: 04/17/03 EDN-Design Ideas / The
circuit in Figure 1 is a variation on the familiar
integrator/comparator triangle-wave oscillator,
which you typically implement with two op amps. An
integrator and a comparator connect in a
positive-feedback loop; the comparator drives the
integrator and vice versa. A fixed amount of
hysteresis exists in the comparator, producing a
triangle wave at the integrator's output... |