The document discusses different types of clipper and clamper circuits. It describes diode clippers that clip voltages above or below the diode threshold. Biased clippers add a DC source to change the clipping level. Parallel clippers clip voltages that forward bias the diode. Clampers use a diode and capacitor to clamp an AC signal to a specific DC level, either positive or negative. Biased clampers allow adjusting the clamping level with a DC source. The document concludes with references on electronic devices.