I have an adjustable triangle waveform generator circuit that puts out 4V pp and can be adjusted from .1 Hz to 22Hz.
It uses a CD40106 with a pot and a cap, the output waveform taken off of the cap.
My power supply is 12VDC.
I need to maintain the same waveform symmetry but amplify the waveform to travel from rail to rail, 0VDC to 12VDC and back to 0VDC.
Tried connecting the signal to the base of a darlington transistor, cap coupled with a .1uF, 1N4148 to ground to diminish the below ground swing.
All I got was a square wave... that went rail to rail.
Tried a 2N3904 but the signal was disjointed and floating above ground.
What kind of amplifier am I trying to make to amplify this signal (servo, DC..?)?
The amplifier should have a high input impedance but be able to track the DC input voltage and duplicate it as a higher output voltage.
Where can I get some kind of schematic to try out?
It uses a CD40106 with a pot and a cap, the output waveform taken off of the cap.
My power supply is 12VDC.
I need to maintain the same waveform symmetry but amplify the waveform to travel from rail to rail, 0VDC to 12VDC and back to 0VDC.
Tried connecting the signal to the base of a darlington transistor, cap coupled with a .1uF, 1N4148 to ground to diminish the below ground swing.
All I got was a square wave... that went rail to rail.
Tried a 2N3904 but the signal was disjointed and floating above ground.
What kind of amplifier am I trying to make to amplify this signal (servo, DC..?)?
The amplifier should have a high input impedance but be able to track the DC input voltage and duplicate it as a higher output voltage.
Where can I get some kind of schematic to try out?