CodePudding user response:

May be capacity is too big, charging slow, try it in a little bit small, but in small frequency may not be what you want, so after the adjustable capacitance resistance also get together,

CodePudding user response:

Upstairs right, it is suggested that reduce RV3, itself op-amp is a plastic and full convergence effect,

CodePudding user response:

Is excuse me this waveform on load?