The Colpitts oscillator is a time-tested design — from 1918. [The Offset Volt] has a few videos covering the design of these circuits including an op-amp and a transistor version.

The Colpitts oscillator output is level-shifted using R4 and R5 to a zero of about 1.2 V, which is the microprocessor's analog comparator reference voltage. The oscillation frequency of a Colpitts ...

The oscillator IC is a pretty standard Colpitts oscillator but it also provides a programmable divider and output drive. The circuit uses some unusually configured capacitors.

This is a common emitter Colpitts oscillator. R1 and R2 form a voltage divider to provide base bias. the emitter resistor R3 also provides some bias. R4 is the collector resisotr across which the any ...

The idea is to use the amplifier's input stage as a voltage follower in a basic Colpitts oscillator. This circuit uses the noninverting input of the current-feedback amplifier as the follower input ...

Colpitts Oscillator: A type of oscillator that utilises a capacitive voltage divider and an inductor to produce stable oscillations, widely used for its simplicity and effective frequency control.

2. Colpitts Oscillator Circuit: This includes inductors, capacitors, and a transistor to create the oscillating signal. 3. Speaker: To output the audible tone when metal is detected. 4.