This trimmer or reaper amplifier cuts the signal peaks at a voltage determined by the zener diodes. The gain is given by R1 and R1 and the power supply must be symmetrical from 5 to 15 V.
This type of circuit, even with the same configuration, appears several times on this site. The...
With this circuit it is possible to compare the values of two capacitors in the range of 100pF to...
Assembled with SMD components, this FM transmitter fits into a pen. We have already published a...