Hello everybody!! can I use a colpitts oscillator to generate a square wave? i thought connecting a smith trigger (74hc14) out to the Colpitts oscillator is this a good idea?
I agree - using a logic gate to turn a sine wave into a squarewave would mean that there would be spare logic gates, and it only takes one inverter to make Pierce oscillator.Are you sure you need to build a Colpitts to later need something else to finally get a square wave as output?
I would use a single 74LVC1G14 so you don't have to pay for more inverters than you need and so you can get higher frequency operation with less delay.Hello everybody!! can I use a colpitts oscillator to generate a square wave? i thought connecting a smith trigger (74hc14) out to the Colpitts oscillator is this a good idea?
How does that work then? Is a single inverter really faster than a group of six?. . . . so you can get higher frequency operation with less delay.
Is it real? Or is it due to the position of your scope earth? Is your scope probe perfectly calibrated?i implemented square wave, but it has ripple, is there any way to take it out?
No, but the LVC technology has smaller features and lower propagation delays as well as inputs that are tolerant of voltages above Vcc which can go down to 1.65VHow does that work then? Is a single inverter really faster than a group of six?
I did specify the "1G" variant in my original post. Ding rejected.You can get 74LVC14 with six in a 14 pin package, but I'll let you off!
I also note about the LVC is that the hysteresis and threshold levels are more accurate than the ordinary HC. You could make a relaxation oscillator out of one and have a fair chance of being able the predict the frequency. I bet it would run at 4MHz!
I might perhaps have mentioned that back in post #2. I can’t see a good reason for making a Colpitts oscillator with a transistor then using logic gates to make a square-wave when I could make a Pierce oscillator with one of the logic gates,I did specify the "1G" variant in my original post. Ding rejected.
Actually better for that purpose would be the 74LVC1GU04. The unbuffered parts make dandy oscillators.