Hello, I do have some experience and I am passionate about learning more about electronics.
Hello, I am trying to learn about different oscillator circuits and was looking at the Colpitts oscillator here which is similar to the Hartley oscillator except the Colpitts uses capacitors instead of inductors in the tank circuit. I will have the circuit below.
I want to make sure that before I ask questions about the circuit, I want to make sure that what I know so far is correct. So tell me if this sounds right.
STATEMENTS
1) The Colpitts oscillator uses a capacitive voltage divider network as its feedback
source.
2) C1, C2, and L form a tank circuit that causes the oscillation. This oscillation goes
through C4 to the output and also at the other cycle of the wave charges and
discharges C3, which turns on an off the NPN transistor.
3) RFC is picked so that the inductor has high Reactance at the oscillation frequency
and low resistance to DC to help start the oscillation.
QUESTION
I will ask more questions about this circuit once I get some clarification but speaking very broadly is the Colpitts oscillator circuit and the Hartley in some way like a very basic Microphone into the base of a transistor circuit? Where the signal is being amplified but i believe that in the Colpitts and hartley circuits, the transistor also must
put feedback to keep the oscillation going, as with the microphone transistor circuit the source of the oscillation is the human so no feedback is necessary?
P.s I am speaking very broadly about comparing this circuit to a mic amplifier circuit. I most mean that both have analog signals that are being amplified.
Is that true? Thanks
Hello, I am trying to learn about different oscillator circuits and was looking at the Colpitts oscillator here which is similar to the Hartley oscillator except the Colpitts uses capacitors instead of inductors in the tank circuit. I will have the circuit below.
I want to make sure that before I ask questions about the circuit, I want to make sure that what I know so far is correct. So tell me if this sounds right.
STATEMENTS
1) The Colpitts oscillator uses a capacitive voltage divider network as its feedback
source.
2) C1, C2, and L form a tank circuit that causes the oscillation. This oscillation goes
through C4 to the output and also at the other cycle of the wave charges and
discharges C3, which turns on an off the NPN transistor.
3) RFC is picked so that the inductor has high Reactance at the oscillation frequency
and low resistance to DC to help start the oscillation.
QUESTION
I will ask more questions about this circuit once I get some clarification but speaking very broadly is the Colpitts oscillator circuit and the Hartley in some way like a very basic Microphone into the base of a transistor circuit? Where the signal is being amplified but i believe that in the Colpitts and hartley circuits, the transistor also must
put feedback to keep the oscillation going, as with the microphone transistor circuit the source of the oscillation is the human so no feedback is necessary?
P.s I am speaking very broadly about comparing this circuit to a mic amplifier circuit. I most mean that both have analog signals that are being amplified.
Is that true? Thanks